loud explosion out exhaust
#1
loud explosion out exhaust
cars been sitting in garage and I start it occasionally except last week it was running very rough and barely stayed running, now it wont start at all and after trying to start it a few minutes it backfires out the exhaust like an explosion. I pulled carb. and cleaned inside the bowls. it has spark and its getting fuel. the timing is close enough it should try to start. tried a different distributor and points. Nothing was changed before it started running bad. the motor was rebuilt 12 years ago and has never been on the road 4-5 hours run time. its an olds 350. thanks
#5
I put in a breakerless point set and it still does the same. I'll take carb off and clean it out good. Its a holley, ive heard you can have a problem with the power valve? I will let you know how I make out. thanks
#6
The motor has only 4-5 hrs of run time in 12 years of sitting?? The holley carb would be dried up and crud will be moving thru it for sure. Pushing a lot of fuel thru their to get an explosion. Try tapping on the carb with a hammer to settle the needles back in .
#7
#9
#11
well after taking the carb apart and cleaning it, installing breakerless points, and an accel super stock coil. After removing the spark plugs and checking all for spark, 4 of them had a week spark. Replaced them and car runs like a top. Go figure! about $100 later and 2 fatter mufflers
thanks for your help
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rmsikorski66
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February 17th, 2014 06:20 PM