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.

Bad Compression Results... Options?

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

bluegs03

15+ Year Contributor
492
3
Apr 4, 2007
Dallas, Texas
Hey i finally got my compression results and it looks like spark isnt my biggest problem.
Since the car wont start i cant get it to operating temperature
Throttle was wide open all tests
All spark plugs were out
I Cranked it plenty of times
The battery was hooked up to a running car so it couldnt be low

The results are facing the front of the car left to right
CYL #1 CYL#2 CYL#3 CYL#4

63 50 50 42

Then i let each compression test sit for 2-5 minuets each and here are the results after that

60 40 48 40

Thats my kinda Getto way of leakdown testing

Since the numbers didnt really fall all that much are we pretty much sure that its the pistons or the valves? What do you guys think is there any hope that it could be something small like a headgasket?
 
Add Value - Be Respectful - No Trolling - No Misinformation - Participate Often!
Support Vendors who Support the DSM Community

Latest posts

Build Thread Updates

Latest Classifieds

  • For sale 2g 2G AWD Rear Knuckle Set
    2G AWD Rear Knuckle Set $230 + shipping and paypal fees* these are out of 2GB so you get a...
    • jersygsx
    • Updated:
    • Expires
  • For sale 2g 2G GSX/GST Front Knuckle Set
    2G GSX/GST Front Knuckle Set $150 + shipping and paypal fees* on the L side Knuckle the little...
    • jersygsx
    • Updated:
    • Expires
  • Wanted Looking for an Evo 3 16g
    Anybody selling one let me know. Tried ebay and its all knock offs
    • heresjimmy42
    • Updated:
    • Expires
  • For sale 1g 1990 STM shifter base bushings
    1G 1990 STM shifter base bushings.
    • drich970
    • Updated:
    • Expires
  • For sale 1g 1G Radium fuel rail
    1G Radium fuel rail with built in FPR -8an feed and return
    • drich970
    • Updated:
    • Expires
Back
Top