The Central Hub for DSM Community and Information

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. This is where the DSM platform history is documented and archived. Log in to help us in our mission, and to remove most ads from the browsing experience.

Compresson Test Results

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Passion 4 Speed

15+ Year Contributor
198
0
Jul 26, 2004
kissimmee, Florida
Hey guys i been having a oil burning problem only at idle blue/ grey color smoke, i had my friend watch for smoke coming out from my muffler while driving and flooring it and he said he doesnt see any smoke coming out. So im guessing my valve guides/seals are no good. So i did a compression test my 1st time ever. i followed the instructions on this web site http://www.dsmgrrrl.com/FAQs/compression.htm
I took 3 different type of tests
Turning over for 10 seconds long
From left to right
#1. 185 #2. 200? #3. 175 #4. 175 <<< i tested #2 twice same results
Turning over 4 revs
Left to right
#1. 165 #2. 190 #3. 170 #4. 160
Wet test turning over 4 revs
#1. 205? #2. 200 #3. 190 #4.190<< I tested both 1 and 2, same results

I have 166xxx miles on my motor, and i have a small oil leak coming from the oil pressure sending unit, which i am replacing today , and i have a small crack on my valve cover on the timing belt side which also leaks a small amount of oil. I allways have to add a quart of oil about once every week or 2. Any idea on what could be my problem piston rings or bad valves?? thanks for your help in advance =)
 
I would say rings.

The oil could be seeping past the rings which would give the illusion of higher compression since its helping the rings seal when cold.

I would say youre experiancing the most blow by on cylinder 2.
 
thanks for your input..that does make sense about #2, time to start saving up for a jdm motor..does any one know a web site that sells 6 bolt 4g63 motors? i check ebay and they jus sell 90-94 jdm motors, meanig i have a real high chance of gettin a 7-bolt motor unless its ok to swap in a 7-bolt motor??
 
Add Value - Be Respectful - No Trolling - No Misinformation - Participate Often!
Support Vendors who Support the DSM Community

Latest Classifieds

  • For sale 2g 2g rear brace arms
    2g rear subframe brace arms. Missing one of the bushing spacers. No rust. Had someone looking...
    • Galant665
    • Updated:
    • Expires
  • For sale 1g 1GB Eclipse Tail Lights
    1GB Eclipse Tail Lights $80 + shipping and paypal fees* not flawless but in very good shape...
    • jersygsx
    • Updated:
    • Expires
  • For sale LC2
    Used LC2
    • Anthony Hornback
    • Updated:
    • Expires
  • For sale 1g Flip up covers
    Pair of black flip up covers
    • Anthony Hornback
    • Updated:
    • Expires
  • For sale 1g Flip up headlight
    One red flip up headlight and the black trim piece for the other
    • Anthony Hornback
    • Updated:
    • Expires
Back
Top