91 Accord Detonation Issue
#1
91 Accord Detonation Issue
Hi Brains Trust,
My '91 2 door EX is detonating (hope that's the correct term, I'm Australian) quite badly when the engine is cold/under load. I had a mechanic check the timing recently, and I've also tried adjusting the timing a little by ear and it still does it. Just wanting some suggestions for what it might be? Spark plugs?
Thanks!
Carl
My '91 2 door EX is detonating (hope that's the correct term, I'm Australian) quite badly when the engine is cold/under load. I had a mechanic check the timing recently, and I've also tried adjusting the timing a little by ear and it still does it. Just wanting some suggestions for what it might be? Spark plugs?
Thanks!
Carl
#3
Unusual for this engine to have detonation.
Reasons for detonation; timing advanced too much, combustion deposits, wrong spark plugs, lack of exhaust gas diliution (should not be a factor w/ a cold engine, only fully warmed), compression too high (special pistons or heads),
Are you sure the noise is detonation? A rattling clatter could arise from valves, but not quite the same noise.
good luck
Reasons for detonation; timing advanced too much, combustion deposits, wrong spark plugs, lack of exhaust gas diliution (should not be a factor w/ a cold engine, only fully warmed), compression too high (special pistons or heads),
Are you sure the noise is detonation? A rattling clatter could arise from valves, but not quite the same noise.
good luck
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08-02-2010 09:29 AM