Quantcast
Jump to content


Eton Low Compression 90cc Thunder 2001


Recommended Posts

I have an Eton Thunder 90CC Compression test is 45psi. I have done the following:

1. New Top End

2.New Crank Seals R&L

3.New Air Box And filter.

4. Leak down test ( Found Reed valve gasket Leaking repaired leak.)

5 cleaned carb.

Still at 45 PSI any help to help diagnosis would be appreciated.

Terry

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Similar Forum Topics

    • By Mhatayas
      What should I do about this , bad oil leak where the filter cover bolts on . Can I use some gasket maker 

    • By newguy024
      Just got into ATV riding just last week, never had much money so i couldnt afford to buy anthing, so now at the age of 34 i just bought a 1987 suzuki quadrunner 300 for 500$ took it out a few times and what a rush of excitement to go through that first mudhole haha!
    • By jatho
      Has anyone else had an issue on older king quads where the oil would leak from the top of the head (due to a failed gasket) and drip onto the hot exhaust? Mine got so hot one time it caught fire. Just wondering if this is a common issue, as I've seen the same thing happen on multiple bikes that were the same model. 
    • By BenJammin
      I did a compression test on my 2005 Bombardier Traxter 650 CVT and it's 75 PSI.  service manual only talks about leak down test.  No specification for engine compression the manual.  What does 75 PSI tell me?  Thank in advance.
       
      A little history of this machine.  640 miles.  Picked it up about 2 years ago, not running. Probably the computer.  Tested all circuits and confirm it was the computer.  Long story short, I watched a Youtube video and fixed the computer. ATV now started and runs.  BUT, it tops out 20 MPH.  I cleaned the carb 3 times also using a Mikuni carb kit after the second time.  Slide in carb is going up and down.  Only adjustment for fuel is at 1.5 turns out.  NGK Sparkplug had soot on main part but brown on the electrode.  Champion sparkplug is brown.  I check CVT clutches and they both appear to engage like they suppose to.  Checked valve clearance it's 0.00, I can't get any feeler gauges in-between.  I check timing chain I believe it's in the correct position and hasn't skipped.  I removed muffler plug and drilled into muffler to try and make sure it wasn't plugged.
    • By McG75
      Sorry I suck at these forums so if you see this submitted under update status, my bad. Anyhow this is a new shock for a 96 Yamaha Kodiak 400 4x4 it fits my 96 Yamaha Timberwolf 250 4x4 perfectly. Little narrower are the bottom than the original but everything else is perfect. I extended it to almost a half in from full extension because I’m pushing 350 pounds.  It rides and hold me well. So if any of y'allRace driven shock. have been looking for one and didn’t want to do the research here it is. 





×
×
  • Create New...