Volvo RWD 120-130 Forum

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1966 122S PERSISTENT INTAKE MANIFOLD BACKFIRE 120-130 1966

Backfire through the carbs is typically a timing or valve issue. If the intake valve is shut when the spark occurs...

Does it happen as soon as the car is started or only when the engine is hot. If only when hot, do you have a valve that has a thin spot on the edge ?


Greg






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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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