Pesky spark knock/clatter reolved?
#1
Pesky spark knock/clatter resolved?
Ive been chasing this light throttle under load knock or detonation for awhile.
I was looking at Long term fuel trims and noticed they where high. Smoke tested and found a major nasty leak at Brake booster line at Throttle body collet/seal.
Replaced, fuel trims dropped, starts quicker . brakes better AND knock appears to be gone. Must have been a lean tip in detonation when warm.
I will push it hard this evening and let you know how it turns out.
I was looking at Long term fuel trims and noticed they where high. Smoke tested and found a major nasty leak at Brake booster line at Throttle body collet/seal.
Replaced, fuel trims dropped, starts quicker . brakes better AND knock appears to be gone. Must have been a lean tip in detonation when warm.
I will push it hard this evening and let you know how it turns out.
Last edited by motorcarsrandy; 04-30-2014 at 04:13 PM.
#3
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#5
some guys with Autologic in the UK said may be a converter.. Not so sure.
#7
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S-Type / S type R Supercharged V8 ( X200 )
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