Background:
LS/VTEC Turbo
Built bottom end w/ 9:1 pistons
The car was running a bit rough so I decided to do a compression test, these are the results of the dry and wet tests performed:
So obviously this doesn’t look good, cylinder #1 being the focus of attention.
I decided not to spend $100 on a leak-down tester so I fashioned up my own using some of the components from my compression tester:
Results of the leak-down test:
100 psi, each cylinder set precisely to TDC prior to testing.
Cylinder #1: 100% leak with all air exiting through the exhaust valves.
Cylinder #2: 60% leak exiting through exhaust valves.
Cylinder #3: 80% leak exiting through exhaust valves.
Cylinder #4: 70% leak exiting through spark plug hole of cylinder #3
From what I can tell the head needs to come off and the exhaust valves need to be thoroughly inspected. Before I go to those lengths, I figure it can’t hurt to ask some of you fine folks for your opinions on the matter.
Any advice from anyone that has experienced similar circumstances?
Cheers