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.

wierd leakdown results

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

xojaycavox

15+ Year Contributor
56
0
May 29, 2005
Yonkers, New York
I searched and found that everybodys leakdown results are different! Any way i didnt have a guage so what i did was just used my compressor to pump air into the cylinders. this is what i heard.

Cylinder #1 and Cylinder #3 when i put air in the cylinder In TDC i felt air coming out of the oil cap hole and the dipstick hole. even when i moved the crank back and forth i still felt it come out of the cap and the dipstick hole.

Cylinder #2 and Cylinder #4 i heard it both on the intake side and the exhaust side of the motor! While the air would enter the motor i moved the crank back and forth! When i moved it forward i heard it more on the exhaust side of the motor, and when i moved back i heard it more on the intake side! but when i put on TDC i heard it both in the intake side and the exhaust side leaking.

Thoes test above are done with the spark plugs in them except to where i was putting the air in.

But when i took the spark plug out of the 4 cylinders and when i put air into the 2nd cylinder i felt air come out of the 4th cylinder and when i put air in the 3rd cylinder i felt air come out of the 1st cylinder.

BTW compression test was #1=180 #2=180 #3=100 #4=175

any hints or anything that might give me these results!

i have crower 272/272 race cams, its a 2.3 stroker with 8.5:1 je pistons that is .020 over.
 
i know not the timing marks... its when i put someting in there and turned the crank until it stopped moving up or down.. thats when i did the leakdown ..
 
Add Value - Be Respectful - No Trolling - No Misinformation - Participate Often!
Support Vendors who Support the DSM Community

Latest posts

Build Thread Updates

Latest Classifieds

Back
Top