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1966 122S PERSISTENT INTAKE MANIFOLD BACKFIRE

Thanks, Dave.

I have been looking for issues that could cause a lean backfire, but just had the carbs (SU HS6) rebuilt by sucarbs.com, and have inspected for all of the things you suggested. I recently put a heavier oil (SAE 20, as recommended by the original manual) into the dashpots. Have tried enriching the mixture all the way and moving the timing in both directions. Nothing makes any noticieable difference.






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New 1966 122S PERSISTENT INTAKE MANIFOLD BACKFIRE [120-130][1966]
posted by  rotovate  on Tue Jul 1 18:19 CST 2014 >


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