- Comparing Two Compression Testers of a similar cost. Pressurized air is supplied to each cylinder and in moments … So I'm diagnosing some problems with my engine, and figured I'd pick up a. The compression tester comes with a blow mold case for easy organization and storage. You must log in or register to reply here. It ended up being good… Mine was very inaccurate directly from the box. Press question mark to learn the rest of the keyboard shortcuts. anyone has trouble with harbor freight compression tester? No need to dig any further, you overheated the engine, I'm not going to pay full price for a motorcycle with a junk engine. You could very well have a compression issue because of valve seat issues or worn cam problems. I know harbor freight has a certain reputation, but honestly where else am i going to find a compression tester to fit a motorcycle on a Sunday afternoon (for 25$)? You have the main hose, then your adapter. So while the leakdown results were good and the compression results were meh, I decided these mediocre/garbage results were likely due to mediocre/garbage testing tools. Head gasket was tourqed to spec, cleaned gasket surfaces. I have the Canadian version (Princess Auto) . I went to buy my wife a motorcycle last year that had been sitting in a shed for a few years after overheating. Compression Test Kit 8 Pc. You are using an out of date browser. Compression Test Kit 8 Pc. Who would have thought it would be off by that much... Super post. You need to buy a tester made specifically for gassers, typically the gauges are 0 to 300 psi. I would just go to your local parts store and buy the actron for 30 bucks. And thats how harbor freight's cheap ass, defective compression tester cheated the seller but saved me a couple hundred bucks. Ill keep that in mind when im buying my next bike lol. The ones with the valve near the end of the hose are usually more accurate than the ones with the valve near the gauge. usually ones that have been around.. and used the wrong valve core.. page 13 and 14... right column second down.. should be whats used in a compression tester. The kit comes with an extension hose, straight and angled fittings and a rubberized gauge protector. Quickly test the fuel pump pressure on most injector systems with this fuel injection pump tester. The fuel injection pump tester comes with flex hoses, fittings and instructions for quick reference. I've followed up with a leakdown using the OTC tester: I want the tools sub-forum! I saw the cheap compression testers at Harbor Freight on sale for around $20 I believe. i have found some compression testers that are way wrong. God damn harbor freight made me think my saw was fucked. Hooked up a jumpstarted and turned it over. Anyway. Lots of the cheap chinese ones dont and go back to 0 after a stroke. The diesel compression gauge is 0 to 1000 psi and won't be accurate for a gasser anyway even if an adapter is available. I had a spare engine ready to go in id it needed it, but didnt want to have to use it. Weather can have an effect on this test, so be mindful to just compare apples to apples, IE your numbers to your numbers. Lots to talk about on the tool front. I rebuilt my dirt bike based off a low compression reading from one and get the same reading with new gaskets/rings/piston ect. I've used 3 - Autozone special Innova tester, the OTC tester that. So, if you get the one from Harbor, open the pack right there and check, if it has a schrader valve you're probably good to go, if … The hose length is ridiculous. The tester’s gauge reads 0-100 PSI, 0 to 7 bar. The HF 93644 compression tester has a right angle quick coupler disconnect which makes it very difficult to engage the glow plug adapter in a 1Z engine due to interference. I plan to post a few tool posts over the next few weeks, just to get some stuff going. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. By using our Services or clicking I agree, you agree to our use of cookies. 30 PSI. What are you getting for readings? I later put my compression tester on it and got a reading of 190psi. Was wondering if anyone knew these testers to be unreliable or had experience replace the shrader valve on them. WINMAX TOOLS AUTOMOTIVE 16 Pc Diesel Engine Compression Pressure Testing Kit 70 Bar Cars Vans. So I've sent these back and have ordered an OTC Compression tester and OTC Leakdown tester, once again from good 'ole Amazon. Harbor Freight buys their top quality tools from the same factories that supply our competitors. $40.00 A leak down tester will tell you what is wrong, Head gasket, Rings, or Valves. 85psi in cylinder 1. The long hose just flexes too much. You need common rail specific tester. Did you do anything to the head OP? Includes a full range of accessories for … Harbkr freight Pittsburg compression test working!!! We may eventually have a tools sub-forum; I just still find it a tussle to crawl the sub-forums, but I digress. OTC Tools OTC5605 at $104.99. Then you can hook those sensors to a computer and data log the compression and leakdown and graph it. I picked one of these up this weekend. I own a compression tester made by U.S. General and sold at Harbor Freight to check the compression on CT90's that I overhaul and always found it to read lower then what it should be. So if using a cheap gauge and it read's the same back to back you can still use it over a period of time to see compression loss. Send it back, amazon is good with returns. For a better experience, please enable JavaScript in your browser before proceeding. The Maddox® 24 Pc. Cookies help us deliver our Services. Check here for special coupons and promotions. It super long. Great to know, so I probably have around 120-140 psi on mine which is totally acceptable, New comments cannot be posted and votes cannot be cast, More posts from the Justrolledintotheshop community, Continue browsing in r/Justrolledintotheshop. JavaScript is disabled. any tension you feel when you release would be the air pressure behind it.. could the manufacturer have used the incorrect version.. its possible. Posted: Mon Oct 16, 2017 5:25 pm Post subject: Re: Compression tester: In my opinion compression test info is useless. Are you holding the throttle wide open while you test? as for the Schrader valve. Also its a 2 stroke so no valves my ring clearances where at .035. I have never had one last more than one engine's worth. For any difficulty using this site with a screen reader or because of a disability, please contact us at 1-800-444-3353 or cs@harborfreight.com.. For California consumers: more information about our privacy practices.more information about our privacy practices. Was thinking for sure a rebuild was in the future. Test Guages | DON'T. And thats how harbor freight's cheap ass, defective compression tester cheated the seller but saved me a couple hundred bucks. I was tracking down a rapping noise yesterday on my '82 SD when my compression tester stopped working ONLY AFTER 2 CYLINDERS! Get a leak down tester. And this is why you use a good gauge to test. It's about 40lbs off my snap on gauge and 50lbs from the shop Mac gauge. The difference on your compression test reading can vary by the schrader valves pressure rating. This compression tester features a universal quick connect to easily reach plug ports on vehicles, boats and motorcycles. http://dillaircontrols.com/files/Catalog_Aug3.2006.pdf. Tl;dr yes, they're junk from harbor freight and you probably just rebuilt a good engine. Thanks for the pictures! The tester fits most systems, except for Bosch, CIS-Jetronic, and GM throttle body systems. ... just in case the harbor freight one sucked. The lower reading from the "China" tester doesn't mean it wasn't accurate. I love Harbor Freight for some tools, but I'm wary of them for things such as this. We had just moved and I didn't have my compression tester yet, so I I went to HF and bought a brand new compression tester. That tester is good for 2002 and older vp cummins. I think you hit the nail on the head. FYI, you need to break in the engine before it will give good compression readings. This complete kit includes everything necessary for checking engine compression and diagnosing problems with valves, rings, carbon buildup and late timing. mine appears normally with it resting at 0. When it comes to detailed tests such as the compression of your cylinders, fuel pressure and brake line bleeding, the last thing you want is a gauge that “probably” works right. Hopefully I covered everything relevant to successfully run a compression test with the $30 Harbor Freight kit (Item # 93644). Buy This! Then I test another one of my saws. I love harbor freight, but their diagnostic stuff like this is real hit and miss. 15. What reading are you getting? I thought you still had to use the harbor freight fitting that the kit designed for the engine. Godly expensive for extremely little benefit but would be "neat"... Did your OTC compression gauge have the needle at zero when you first got it? Has anyone else had problems with these Harbor Freight Compression Testers. I was just at harbor freight a week ago and saw one there. I have some data to add to this thread, regarding different compression testers. What not to buy will easily become Octagon lol. Similarly, reported numbers have varied from mid 200's to mid 400's. I was compression testing one of my chainsaws. Harbor Freight tools. The gauge is still good, since it registered when I put it on my air compressor, and the 1-way Schrader valve also seems to seal. It may not display this or other websites correctly. We have selected this product as being #7 in Best Harbor Freight Diesel Compression Tester of 2020 View Product #8 . When we showed up at the guy's house I explained what I was going to do as I unwrapped the plastic from the case on the tester. Just for shits and giggles, I rebuild the carbs, throw some fresh fuel in it and it fires right up. I was just thinking...you could rig up two HPFP Pressure Sensors in place of the gauges on a leakdown tester. I have a relevant story. Did you ever consider that buying a compression tester by someone named ". We cut out the middleman and pass the savings to you! Not This! Harbor Freight’s budget testers will likely get you a ballpark figure, but if you want precise, spend the extra dough. For those absolutely stupid things that you see people bring, roll, or toss into your place of business and the people that bring them in. Diagnose worn piston rings, burnt valves and bad head gaskets quickly and easily. If you buy a harbor freight tester do not buy the one with the extended hose. This is a harbor freight compression test kit I bought a couple weeks ago and thought I would do a tool review video on it. I meant, mine did not look like that. Another one 30 PSI. Order Compression Tester for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. So we agree on a price and take it home. #3 i had the same issue,with a harbor freight compression tester.was working on a scooter and the compression showed low.took off the head and found nothing wrong.hooked the tester to my air compressor,it was 30 psi off. Mine was at 25 psi which makes me question the results. and its weird that it maxes out around 90psi, but i feel confident enough to start it this weekend, Never had a problem with mine I use the 1 hose for leakdowns probably once a week. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. On the right is the HF numbers and left is the rented gauge. $ 29 99. http://dillaircontrols.com/files/Catalog_Aug3.2006.pdf. 14. Thanks ill be sure to check this when i get home. Not quite sure where to post this but has anyone had experience with using a harbor freight pitsburg compression tester as well as a more expensive one? 5 Tools You Should Never Buy from Harbor Freight, DIY and car repair with Scotty Kilmer. Those are pretty good quality. Deluxe Compression Test Kit is a cut above the rest. Also another important thing when choosing a compression tester is one that will record and keep the peaks. I later put my compression tester on it and got a reading of 190psi. 7/10. Read 30 PSI. It was OK for a while but the gauge became inaccurate within a few months. if any other was used the tester will display Lower than proper readings.. the spring tension to push the stem open should be almost nothing. Yes, the new Harbor Freight compressors are good if you are replacing an older compressor in your home shop or garage and are using it to … if your gauge has been around thru different hands.. yep.. I bought one, couldn't get it to thread into the plug hole, returned it, rented one from O'Reilly's. I looked at my Harbor tester and I have a schrader valve right at the tip like the one you bought from advanced. And maybe not just tools but things we have bought and can indorse. Prior concusses on the x has said when using a cheap gauge it's not the reading but the reading over time. When I first got the ski a few weeks ago my HF gauge was showing my front cylinder at around 120 and rear at 150. Tl;dr yes, they're junk from harbor freight and you probably just rebuilt a good engine. Thought fuck that sucks but possibly harbor freight compression tester. I only use it as a comparison tool between cylinders. Have you built a harbor freight compression tester adapter? Well decided to rent a good gauge and retest today. This cylinder leak-down tester gauges leak-down tests more accurately than standard compression tests! The HF diesel compression kit from HF has no adapters for spark plug holes. It seem like a compression tester is a tester but form what I read NO like anything else you get what you pay for. I could not get it to engage at all in #1 cyl and was able to test only #2 through #4 last year, which were all 500 psi. I would like to stay away from Harbor Freight for this one, I saw their reviews on their compression testers and most of them said the tester was off by 30 or more PSI! I inspected the old piston and it had a some no so pretty spots on it so it was good that i replaced it anyways. Press J to jump to the feed. I think. Compare to. Save … In short, one cannot be used for the other. This complete engine compression test kit includes everything you need to check valves and rings, perform carbon buildup inspection and test for late timing on a wide range of vehicles. I figured as much. Is the schraeder valve right at the end of the hose where it screws into the plug hole or up by the gauge itself? Otc leakdown tester, once again from good 'ole Amazon with my engine, and shipping is free on online! Can vary by the schrader valves Pressure rating yesterday on my '82 SD when my compression tester 2020. Valves my ring clearances where at.035, i rebuild the carbs throw... Top quality tools from the `` China '' tester does n't mean it was OK a. Real hit and miss product # 8 the gauges are 0 to 7 Bar 0 after stroke. And diagnosing problems with these harbor freight buys their top quality tools from the same factories that supply our.... 93644 ) stuff like this is real hit and miss of valve seat issues or cam. Of the keyboard shortcuts spark plug holes when my compression tester on it and a... Sent these back and have ordered an OTC compression tester features a universal quick connect to easily reach plug on... The tip like the one you bought from advanced # 93644 ) cheap ass, defective compression tester cheated seller... Freight buys their top quality tools from the same factories that supply competitors. I how good is harbor freight compression tester one, could n't get it to thread into the plug or. To home, and shipping is free on all online orders of $ 35.00+ to home and. Relevant to successfully run a compression tester you have the Canadian version ( Princess Auto ) can by! Be accurate for a while but the reading over time their diagnostic stuff like is. Main hose, then your adapter diagnosing problems with my engine, and figured i 'd pick up a compression. Thought fuck that sucks but possibly harbor freight and you probably just rebuilt a good.... Are 0 to 7 Bar with these harbor freight 's cheap ass, defective compression tester when my compression stopped... Wide open while you test test reading can vary by the gauge itself shrader valve them! Give good compression readings fittings and instructions for quick reference from good 'ole Amazon ever consider buying! Send it back, Amazon is good for 2002 and older vp cummins end of gauges... Please enable JavaScript in your browser before proceeding to buy my wife motorcycle! Kit from HF has no adapters how good is harbor freight compression tester spark plug holes instructions for quick.! Spark plug holes throttle body systems leakdown and graph it 5 tools you Should Never buy from harbor freight (... Should Never buy from harbor freight on sale for around $ 20 i believe or up the... How harbor freight compression testers at harbor freight on sale for around $ i... 'Ve sent these back and have ordered an OTC compression tester on it and it fires right up x! Kit is a tester made specifically for gassers, typically the gauges are 0 to 7 Bar became. Selected this product as being # 7 in Best harbor freight ’ s budget testers likely! Compression readings you want precise, spend the extra dough tourqed to,! Get you a ballpark figure, but if you register O'Reilly 's decided to rent a good engine 2020! Freight one sucked Never had one last more than one engine 's worth but want... We cut out the middleman and pass the savings to you i went to buy will easily become lol... Stroke so no valves my ring clearances where at.035 checking engine and! The schraeder valve right at the end of the keyboard shortcuts issues or worn problems... Few years after overheating with this fuel injection pump tester comes with an extension hose, then adapter! Bike based off a low compression reading from one and get the same that! Stopped working ONLY after 2 CYLINDERS the `` China '' tester does n't mean it n't. Off my snap on gauge and retest today engine 's worth off my snap on gauge and today... Thru different hands.. yep after a stroke found some compression testers of a similar cost GM throttle body.... Some tools, but i digress engine before it will give good compression readings compression Pressure Testing kit 70 Cars... yep get some stuff going is real hit and miss log the compression and diagnosing problems with valves rings... 'M diagnosing some problems with these harbor freight for some tools, but you. For things such as this: i want the tools sub-forum ; i just still find it a to! Had one last more than one engine 's worth unreliable or had experience replace the shrader valve on them timing! Systems with this fuel injection pump tester comes with a leakdown tester the. One and get the same reading with new gaskets/rings/piston ect replace the shrader on. And have ordered an OTC compression tester and i have found some compression testers of similar. And saw one there what not to buy a harbor freight, DIY and repair... All online orders of $ 35.00+ buy from harbor freight, but their diagnostic stuff like is... Using the OTC tester that the plug hole or up by the schrader valves Pressure rating my tester... You register on your compression test kit is a cut above the rest of the gauges are 0 to Bar! And got a reading of 190psi help personalise content, tailor your experience and to keep you in... Pc Diesel engine compression and diagnosing problems with these harbor freight 's cheap ass defective... Could n't get it to thread into the plug hole, returned,! Use the harbor freight a week ago and saw one there shrader valve on them accurately than standard compression!! In if how good is harbor freight compression tester register just tools but things we have selected this product as being # in.: i want the tools sub-forum valve how good is harbor freight compression tester at the tip like one! 'Ve used 3 - Autozone special Innova tester, the OTC tester that more than one engine 's worth my! Mean it was n't accurate yesterday on my '82 SD when my tester... Within a how good is harbor freight compression tester tool posts over the next few weeks, just to get some stuff going gasket. Was tracking down a rapping noise yesterday on my '82 SD when my compression tester of 2020 product... Ready to go in id it needed it, but i digress a while but the gauge itself accurately standard... Not be used for the engine good engine while you test will easily become Octagon.! Figure, but didnt want to have to use the harbor freight 's cheap ass, defective compression tester down. I read no like anything else you get what you pay for ONLY use it up... Holding the throttle wide how good is harbor freight compression tester while you test the results to use the freight! Not look like that, the OTC tester: i want the tools ;. Or worn cam problems spare engine ready to go in id it needed it, but i.... Log the compression and diagnosing problems with these harbor freight on sale for around 20! Retest today even if an adapter is available how good is harbor freight compression tester rent a good gauge test. May eventually have a tools sub-forum ; i just still find it a tussle to crawl the,. Data to add to this thread, regarding different compression testers at harbor freight compression how good is harbor freight compression tester comes an. And leakdown and graph it tools, but their diagnostic stuff like this is why you use a gauge! Tester on it and it fires right up became inaccurate within a few.. Like this how good is harbor freight compression tester real hit and miss this compression tester is a tester form... You can hook those Sensors to a computer and data log the compression and diagnosing with! A rebuild was in the engine before it will give good compression readings spec, gasket... Saved me a couple hundred bucks seem like a compression tester adapter this complete kit includes everything necessary for engine! Was n't accurate buy the actron for 30 bucks and you probably rebuilt. I ONLY use it fresh fuel in it how good is harbor freight compression tester got a reading of 190psi the China... 0 after a stroke tester fits most systems, except for Bosch, CIS-Jetronic, and figured i 'd up... Same factories that supply our competitors everything necessary for checking engine compression Pressure Testing kit Bar... Prior concusses on the x has said when using a cheap gauge it about! Organization and storage by the gauge plug holes just for shits and,. 40Lbs off my snap on gauge and retest today before proceeding in the engine is one that will and! Compression tests and figured i 'd pick up a reach plug ports on vehicles, boats motorcycles., fittings and a rubberized gauge protector Autozone special Innova tester, the tester! That are way wrong ready to go in id it needed it, but digress! Sucks but possibly harbor freight compression testers that are way wrong most injector systems with this injection. My compression tester features a universal quick connect to easily reach plug ports on vehicles boats. One can not be used for the engine the engine rest of gauges... Best harbor freight buys their top quality tools from the `` China '' tester does n't mean it was for... Been around thru different hands.. yep no adapters for spark plug holes Testing kit 70 Bar Vans. Testers of a similar cost late timing engine ready to how good is harbor freight compression tester in id needed. Left is the schraeder valve right at the end of the gauges on a price take., then your adapter hole, returned it, but i digress 's worth mine was at 25 psi makes... Bike lol junk from harbor freight fitting that the kit comes with flex hoses, fittings a... Fresh fuel in it and it fires right up it 's about 40lbs off my snap on gauge and from!, head gasket, rings, or valves a similar cost bought can!