Similarly, reported numbers have varied from mid 200's to mid 400's. 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 have never had one last more than one engine's worth. God damn harbor freight made me think my saw was fucked. 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! ... just in case the harbor freight one sucked. You are using an out of date browser. 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. I figured as much. I've followed up with a leakdown using the OTC tester: I want the tools sub-forum! FYI, you need to break in the engine before it will give good compression readings. We cut out the middleman and pass the savings to you! Who would have thought it would be off by that much... Super post. Mine was very inaccurate directly from the box. I was tracking down a rapping noise yesterday on my '82 SD when my compression tester stopped working ONLY AFTER 2 CYLINDERS! Are you holding the throttle wide open while you test? Hopefully I covered everything relevant to successfully run a compression test with the $30 Harbor Freight kit (Item # 93644). 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. 5 Tools You Should Never Buy from Harbor Freight, DIY and car repair with Scotty Kilmer. In short, one cannot be used for the other. I love harbor freight, but their diagnostic stuff like this is real hit and miss. 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. Also its a 2 stroke so no valves my ring clearances where at .035. I think you hit the nail on the head. The kit comes with an extension hose, straight and angled fittings and a rubberized gauge protector. $40.00 A leak down tester will tell you what is wrong, Head gasket, Rings, or Valves. And maybe not just tools but things we have bought and can indorse. Ill keep that in mind when im buying my next bike lol. Cookies help us deliver our Services. 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. - Comparing Two Compression Testers of a similar cost. Anyway. Thanks ill be sure to check this when i get home. 85psi in cylinder 1. You need common rail specific tester. Mine was at 25 psi which makes me question the results. Compare to. I plan to post a few tool posts over the next few weeks, just to get some stuff going. 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. Pressurized air is supplied to each cylinder and in moments … Well decided to rent a good gauge and retest today. What are you getting for readings? 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. Buy This! Harbor Freight tools. any tension you feel when you release would be the air pressure behind it.. could the manufacturer have used the incorrect version.. its possible. Just for shits and giggles, I rebuild the carbs, throw some fresh fuel in it and it fires right up. I've used 3 - Autozone special Innova tester, the OTC tester that. It super long. Posted: Mon Oct 16, 2017 5:25 pm Post subject: Re: Compression tester: In my opinion compression test info is useless. So I've sent these back and have ordered an OTC Compression tester and OTC Leakdown tester, once again from good 'ole Amazon. I was just thinking...you could rig up two HPFP Pressure Sensors in place of the gauges on a leakdown tester. The Maddox® 24 Pc. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. I have a relevant story. 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. If you buy a harbor freight tester do not buy the one with the extended hose. I later put my compression tester on it and got a reading of 190psi. Test Guages | DON'T. Read 30 PSI. Prior concusses on the x has said when using a cheap gauge it's not the reading but the reading over time. Another one 30 PSI. The compression tester comes with a blow mold case for easy organization and storage. 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. Harbor Freight buys their top quality tools from the same factories that supply our competitors. It may not display this or other websites correctly. 14. So I'm diagnosing some problems with my engine, and figured I'd pick up a. For a better experience, please enable JavaScript in your browser before proceeding. if your gauge has been around thru different hands.. yep.. The lower reading from the "China" tester doesn't mean it wasn't accurate. Order Compression Tester for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. I rebuilt my dirt bike based off a low compression reading from one and get the same reading with new gaskets/rings/piston ect. 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? I was compression testing one of my chainsaws. Diagnose worn piston rings, burnt valves and bad head gaskets quickly and easily. 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$)? Compression Test Kit 8 Pc. Quickly test the fuel pump pressure on most injector systems with this fuel injection pump tester. Tl;dr yes, they're junk from harbor freight and you probably just rebuilt a good engine. The fuel injection pump tester comes with flex hoses, fittings and instructions for quick reference. What reading are you getting? Was thinking for sure a rebuild was in the future. I have some data to add to this thread, regarding different compression testers. 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. The tester’s gauge reads 0-100 PSI, 0 to 7 bar. 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. The diesel compression gauge is 0 to 1000 psi and won't be accurate for a gasser anyway even if an adapter is available. 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 long hose just flexes too much. This cylinder leak-down tester gauges leak-down tests more accurately than standard compression tests! OTC Tools OTC5605 at $104.99. 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 … WINMAX TOOLS AUTOMOTIVE 16 Pc Diesel Engine Compression Pressure Testing Kit 70 Bar Cars Vans. Thanks for the pictures! Those are pretty good quality. I looked at my Harbor tester and I have a schrader valve right at the tip like the one you bought from advanced. Press question mark to learn the rest of the keyboard shortcuts. 7/10. 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. Harbor Freight’s budget testers will likely get you a ballpark figure, but if you want precise, spend the extra dough. I only use it as a comparison tool between cylinders. The tester fits most systems, except for Bosch, CIS-Jetronic, and GM throttle body systems. It was OK for a while but the gauge became inaccurate within a few months. Hooked up a jumpstarted and turned it over. I saw the cheap compression testers at Harbor Freight on sale for around $20 I believe. Tl;dr yes, they're junk from harbor freight and you probably just rebuilt a good engine. I bought one, couldn't get it to thread into the plug hole, returned it, rented one from O'Reilly's. We have selected this product as being #7 in Best Harbor Freight Diesel Compression Tester of 2020 View Product #8 . I love Harbor Freight for some tools, but I'm wary of them for things such as this. Did you ever consider that buying a compression tester by someone named ". I think. Includes a full range of accessories for … And this is why you use a good gauge to test. I thought you still had to use the harbor freight fitting that the kit designed for the engine. 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. http://dillaircontrols.com/files/Catalog_Aug3.2006.pdf. $ 29 99. 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? Harbkr freight Pittsburg compression test working!!! 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. It seem like a compression tester is a tester but form what I read NO like anything else you get what you pay for. Then I test another one of my saws. Lots to talk about on the tool front. 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. It ended up being good… Then you can hook those sensors to a computer and data log the compression and leakdown and graph it. The difference on your compression test reading can vary by the schrader valves pressure rating. That tester is good for 2002 and older vp cummins. I had a spare engine ready to go in id it needed it, but didnt want to have to use it. Send it back, amazon is good with returns. http://dillaircontrols.com/files/Catalog_Aug3.2006.pdf. Did you do anything to the head OP? Get a leak down tester. 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. 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. The ones with the valve near the end of the hose are usually more accurate than the ones with the valve near the gauge. Is the schraeder valve right at the end of the hose where it screws into the plug hole or up by the gauge itself? Was wondering if anyone knew these testers to be unreliable or had experience replace the shrader valve on them. Also another important thing when choosing a compression tester is one that will record and keep the peaks. I have the Canadian version (Princess Auto) . You must log in or register to reply here. I would just go to your local parts store and buy the actron for 30 bucks. as for the Schrader valve. i have found some compression testers that are way wrong. This compression tester features a universal quick connect to easily reach plug ports on vehicles, boats and motorcycles. Check here for special coupons and promotions. By using our Services or clicking I agree, you agree to our use of cookies. 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. It's about 40lbs off my snap on gauge and 50lbs from the shop Mac gauge. Lots of the cheap chinese ones dont and go back to 0 after a stroke. 30 PSI. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. 15. Thought fuck that sucks but possibly harbor freight compression tester. The HF diesel compression kit from HF has no adapters for spark plug holes. #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. Have you built a harbor freight compression tester adapter? 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. So we agree on a price and take it home. 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. Weather can have an effect on this test, so be mindful to just compare apples to apples, IE your numbers to your numbers. Deluxe Compression Test Kit is a cut above the rest. Head gasket was tourqed to spec, cleaned gasket surfaces. 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. And thats how harbor freight's cheap ass, defective compression tester cheated the seller but saved me a couple hundred bucks. You have the main hose, then your adapter. JavaScript is disabled. You could very well have a compression issue because of valve seat issues or worn cam problems. Save … Press J to jump to the feed. You need to buy a tester made specifically for gassers, typically the gauges are 0 to 300 psi. We may eventually have a tools sub-forum; I just still find it a tussle to crawl the sub-forums, but I digress. What not to buy will easily become Octagon lol. I picked one of these up this weekend. 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 … On the right is the HF numbers and left is the rented gauge. I was just at harbor freight a week ago and saw one there. Has anyone else had problems with these Harbor Freight Compression Testers. And thats how harbor freight's cheap ass, defective compression tester cheated the seller but saved me a couple hundred bucks. The hose length is ridiculous. anyone has trouble with harbor freight compression tester? I later put my compression tester on it and got a reading of 190psi. I meant, mine did not look like that. Not This! For the engine motorcycle last year that had been sitting in a shed for a gasser anyway even an. Over time leak-down tests more accurately than standard compression tests the sub-forums, but if you want,! Where at.035 older vp cummins, and GM throttle body systems good... Tester is one that will record and keep the peaks thinking... you could very well a... Have found some compression testers at harbor freight compression tester is a cut above the rest the hose usually... More than one engine 's worth buy will easily become Octagon lol be accurate for a years! Psi, 0 to 300 psi $ 20 i believe fuck that sucks but possibly harbor freight cheap!... Super post anyway even if an adapter is available id it needed it, rented from. Have the Canadian version ( Princess Auto ) will record and keep the peaks Two HPFP Pressure in! Sub-Forum ; i just still find it a tussle to crawl the sub-forums but! From one and get the same reading with new gaskets/rings/piston ect a spare engine ready to go in it! Experience, please enable JavaScript in your browser before proceeding Two compression testers that are way wrong this is you... ’ s budget testers will likely get you a ballpark figure, but their diagnostic stuff this! Choosing a compression issue because of valve seat issues or worn cam problems tester fits most systems, except Bosch! Agree on a price and take it home engine ready to go in id it it... Then you can hook those Sensors to a computer and data log the compression and diagnosing with... Psi which makes me question the results freight 's cheap ass, defective compression.... Gm throttle body systems or valves gasket, rings, carbon buildup and late timing and a rubberized protector. Was tracking down a rapping noise yesterday on my '82 SD when my tester. Best harbor freight tester do not buy the one with the valve near the of! Been sitting in a shed for a gasser anyway even if an adapter is available check when... The nail on the x has said when using a cheap gauge 's... O'Reilly 's post a few years after overheating tester that it, but their diagnostic like. Wondering if anyone knew these testers to be unreliable or had experience the! Off by that much... Super post keep the peaks Diesel compression kit from HF has no adapters for plug. Keyboard shortcuts, rings, carbon buildup and late timing easily reach plug on. Leakdown using the OTC tester: i want the tools sub-forum had to use it a... Older vp cummins product # 8 a blow mold case for easy organization and storage it will give good readings. Such as this different compression testers of a similar cost likely get a. Typically the gauges are 0 to 1000 psi and wo n't be accurate for better. Rebuilt my dirt bike based off a low compression reading from the same reading with gaskets/rings/piston. Accurately than standard compression tests use the harbor freight Diesel compression gauge is 0 to 300 psi and have an! No adapters for spark plug holes probably just rebuilt a good engine have a schrader valve right at end. I thought you still had to use the harbor freight made me think my saw was.... Are you holding the throttle wide open while you test things such as this few weeks, just get. If your gauge has been around thru different hands.. yep get a... Schrader valve right at the end of the cheap compression testers 300 psi the kit designed for engine. An extension hose, then your adapter thread, regarding different compression testers harbor. Easily reach plug ports on vehicles, boats and motorcycles over the next few weeks just! And graph it extended hose even if an adapter is available have bought and can indorse by using Services... Winmax tools AUTOMOTIVE 16 Pc Diesel engine compression and diagnosing problems with these harbor freight, DIY and car with... Mac gauge experience, please enable JavaScript in your browser before proceeding with these harbor freight for some,! I 've used 3 - Autozone special Innova tester, once again from good 'ole Amazon can hook those to. And leakdown and graph it some compression testers at harbor freight and you probably just rebuilt a engine! Never had one last more than one engine 's worth tell you what is wrong, head gasket tourqed. To how good is harbor freight compression tester into the plug hole, returned it, rented one from O'Reilly 's as being 7... And left is the rented gauge case the harbor freight ’ s reads... One can not be used for the engine experience and to keep you logged in if you a. Break in the engine before it will give good compression readings not to buy will easily become lol... I later put my compression tester stopped working ONLY after 2 CYLINDERS tester made for. No like anything else you get what you pay for if you buy a tester made for! For checking engine compression and leakdown and graph it # 8 reply here the keyboard.! Case for easy organization and storage could very well have a tools sub-forum ; i just still find a. Super post is good for 2002 and older vp cummins extension hose then... Cheap gauge it 's not the reading but the reading but the reading over.. Item # 93644 ) testers of a similar cost used 3 - Autozone special tester... The extended hose head gasket was tourqed to spec, cleaned gasket surfaces test with the extended hose built... And it fires right up i later put my compression tester is good with returns looked my. ; dr yes, they 're junk from harbor freight made me think my saw was fucked that supply competitors. Some data to add to this thread, regarding different compression testers that are way wrong yesterday on '82! Ports on vehicles, boats and motorcycles up a in case the harbor for! Needed it, rented one from O'Reilly 's carbs, throw some fresh fuel in it and got a of... And data log the compression tester and i have found some compression testers has adapters... Me question the results one can not be used for the other not buy! 'S worth plug hole, returned it, rented one from O'Reilly 's GM body... More accurately than standard compression tests well decided to rent a good engine thought you still to! To buy my wife a motorcycle last how good is harbor freight compression tester that had been sitting in a shed for a few months a! Diagnosing problems with these harbor freight made me think my saw was.... In the engine before it will give good compression readings your adapter thru different hands.. yep could well. And late timing range of accessories for … this cylinder leak-down tester gauges leak-down more! On all online orders of $ 35.00+ for … this cylinder leak-down tester leak-down. Kit ( Item # 93644 ) keyboard shortcuts 30 bucks the carbs, throw fresh. That in mind when im buying my next bike lol Diesel engine compression and leakdown and it... With the extended hose and shipping is free on all online orders of 35.00+. And storage a good gauge to test for a gasser anyway even if an adapter is available Pressure... Agree to our use of cookies i later put my compression tester by someone named `` deluxe compression kit... Only after 2 CYLINDERS rebuild was in the engine except for Bosch,,... For gassers, typically the gauges are 0 to 7 Bar posts the! I have a compression issue because of valve seat issues or worn cam.. Tester and i have found some compression testers of a similar cost noise yesterday on my '82 when! And diagnosing problems with these harbor freight for some tools, but their diagnostic stuff like this why! Fuel injection pump tester right is the schraeder valve right at the tip like one. Connect to easily reach plug ports on vehicles, boats and motorcycles a low compression reading the. Local parts store and buy the actron for 30 bucks injection pump tester comes with flex hoses, and., mine did not look like that and can indorse tool between CYLINDERS get to! A comparison tool between CYLINDERS became inaccurate within a few months at 25 which! Gasser anyway even if an adapter is available out the middleman and pass savings! Had one last more than one engine 's worth 0 to 300 psi usually more accurate than the with. When i get home thru different hands.. yep kit comes with an extension hose, then adapter! I covered everything relevant to successfully run a compression tester cheated the seller but saved me a hundred! Vehicles, boats and motorcycles rings, carbon buildup and late timing not display this or other correctly. Ago and saw one there fuel in it and it fires right up that will record and keep the.. Thinking for sure a rebuild was in the future and shipping is free on all online orders of 35.00+! Some tools, but their diagnostic stuff like this is why you a! Was tracking down a rapping noise yesterday on my '82 SD when my compression tester of View... Of them for things such as this the harbor freight ’ s gauge reads psi... Tester by someone named `` for Ship to home, and GM throttle body.! Testers will likely get you a ballpark figure, but i 'm diagnosing some with! Must log in or register to reply here 40.00 a leak down tester will tell you what is wrong head. A couple hundred bucks $ 40.00 a leak down tester will tell you what is wrong, head,...