TRX250R.ORG
Workshop => Engine and Bottom End => Topic started by: jshady77 on September 21, 2015, 09:47:18 PM
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Hey Guys,
Just got the new R fresh rebuild completely, been through heat cycles 1/4 throttle cycles, and now doing 1/2 throttle cycles, did compression test with cheap harbor freight tester fresh out of box and only got 90 psi wot and at least ten kicks, starts perfect everytime first kick, feels better and tighter than my last R that was only 152 psi and that kicker went down super easy on that on. The thing runs beautiful and idles perfect, are these testers accurate for cheapies? Or do you think the rings are not seated, just hoping the job was done right. Any help would be appreciated.
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so was the original owner the one that got 195 compression and now you are getting 90
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yes he said he was getting between 185 and 195
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would it start and run good with only 90psi??
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it was holding at 90 psi and not dropping at all??
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it does seem to kick easier with the test kit in, then when I put plug in it feels tighter..
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Have you tried a little thread tape on the tester to make sure it's sealed? Can't comment on if it would run @90 psi, but I've gotten false readings conducting compression tests because I didn't have a good enough seal.
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No have not tried that but I am going to return this one and use the renta tool one I used on my old R that got 152 psi and i know for a fact that one kicked over easier than this one, it just feels like the compression is good with how hard the kick is and it doesnt sound like theres slop when its running, maybe im wrong I am new to these. And definately not a mechanic just a rider lol
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Sounds like u got a junk tester.
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Thats what im hoping did a search on google and seen that several other people had the same problem with the same harbor freight tester and got the same 90 psi , they used a different one and blam different results. Im just nervous of this break in period never did one and dont want to mess it up, especiall taking over where someone else started.
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I would also think it is a junk tester.
You have given your rebuild more time then any I have ever done.
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Yeah I called the guy and started ripping him but he swore up and down junk tester he did give me all the paperwork for the build, I kinda felt bad, he offered to drive an hr and half to test for me, but I told him no worries Ill get a new tester and go from there, nice guy like I said he was like 60 yrs old.
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https://www.youtube.com/watch?v=EN7CvvP59xg&feature=youtu.be
Here it is running right after I brought it home let me know what you think and if this even works, new this lol
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sorry its sideways lol
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Says removed
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Sorry screwed that up upload coming I just figured it out. By the way I appreciate all the help on the site.
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https://youtu.be/4mtMOP1uLEU
Ok got it let me know what you think
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I would say junk tester I have the same tester and it fits really sloppy in the plug
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Junk tester. You might be able to borrow a quality tester from an auto parts store. Or just say screw it and go ride the thing
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I have never used a compression tester in my life. I know harbor freight sells affordable tools lacking the quality needed to get the test done correctly. I did purchase a tester off amazon for about $70 that was recommended by the peeps here.
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Thanks to everyone for all the help going to the auto parts store to borrow quality tester today, Ill let you know the results, thanks again!
Jeff
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Yeah I called the guy and started ripping him
thats not very nice!
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I know as I said I felt bad and were all good:) Got good compression now!
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Compression is around 170 now running great!! Seems to run better every time I ride and she gets more broke in. Thanks for the help!!
Jeff