Could Main relay cause low compression numbers ???
06-19-2007, 07:07 PM
#1
Honda-Tech Member
Thread Starter
Could Main relay cause low compression numbers ???
I'm getting 35-45 psi on all cylinders on my h22a1. Car won't start. Getting spark and fuel. Compression Sucks. My question .... Could a bad Main Relay cause low compression numbers or is it my valves that went ???
06-20-2007, 04:34 AM
#4
Honda-Tech Member
Re: Could Main relay cause low compression numbers ??? (wrx-killer-Sti eater)
its got to be one of three things (or more if you are unlucky)
1.) Bad Rings
2.) Bad valves
3.) Bad Head gasket
The way to diagnose it is, if it is a bad HG u will most likely see bubbles in the radiator when you crank it over. the HG may need to be replaced, or you may have a warped head.
If the HG seems ok, run the compression test again, but first put some oil down the spark plug tube into the the cylinder. this will help seal up the rings if they are bad, if the compression reading is higher then before, then it is probably bad rings, if it doesn't increase, it is most likely bad valves
Hope that helps!
1.) Bad Rings
2.) Bad valves
3.) Bad Head gasket
The way to diagnose it is, if it is a bad HG u will most likely see bubbles in the radiator when you crank it over. the HG may need to be replaced, or you may have a warped head.
If the HG seems ok, run the compression test again, but first put some oil down the spark plug tube into the the cylinder. this will help seal up the rings if they are bad, if the compression reading is higher then before, then it is probably bad rings, if it doesn't increase, it is most likely bad valves
Hope that helps!
Thread
Thread Starter
Forum
Replies
Last Post
Droppedatbirth!
Honda CRX / EF Civic (1988 - 1991)
15
02-02-2004 06:36 AM
