Quote:
Originally Posted by solidaxle
This is probably not the solution but before you get into expensive repair, check the timing. I was adjusting mine by trail and error to get the most performance without a timing light and it at one point it was so far off it knocked.
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good point...
a slight knocking can occur due to a lack of octane too. usually exacerbated with in increased load on the engine. another quick and simple test. although most likely to occur in a performance, high compression engine though.