Reply to "High HCs at one exhaust- Where to start?"

Thomas Curb (Guest)

For all those that are helping...thanks.
A little more info. HCs are failing only at idle. I will do a compression check on
Saturday (in two days). Since the performer
manifold shares a common plenum, I do not think it is the carb, otherwise the right
exhuast would also measure high. I suspect
something with valve train. I do have new
plugs and wires. Suppose one could be faulty.
I do not have a scope to check overall firing curves. Will compresion check help
diagnose burned valve, bad spring, or out of adjustment lash?

Thanks, Tom

4/26/016:51 AM

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