SR20 issues

[zombiewolf513]

Originally Posted by tb13

Walking away from it was the best decision for sure, I didn't want to do something I'd regret. Thats why I posted here to see what others had to say.

I'll do a leak down test sometime soon, If its in the head I should hear air escaping into the intake or exhaust manifold, right?

The compression test was done with the plugs in, its what I usually do, but I see what you are getting at. I can pull them all and test it again.

I've done something similar. tested 180 on 1-3, then 130 on 4. had all the plugs in. tested 185 on all four the next day when i took the plugs out. it's kinda like tryna turn the motor with a wrench with the plugs in. Takes a lot more work and might skew the results.

Here's how you read the noises/effects of a leakdown:

• Intake valve : Air whistling out of the intake, carburetor or throttle body indicates a leak at the intake valve.
• Exhaust valve : Air heard hissing out of the tailpipe, turbocharger or exhaust manifold means an exhaust valve leak.
• Piston rings : Whistling or hissing out of the PCV valve, oil filler cap hole or dipstick tube means the air is pushing past the rings. Suspect ring or cylinder wall wear.
• Head gasket : Air bubbles in engine coolant seen at the radiator filler cap could mean air escaping into the coolant past the head gasket.
• Cracked cylinder head : Bubbles in coolant or coolant being pushed up out of the radiator neck can also indicate cracks in the cylinder head or cylinder walls.

Source: https://mobiloil.com/en/article/car-...-leakdown-test