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Old 02-07-2018, 11:13 AM   #21
Milt/Las Vegas
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Default Re: engine backfire when slowing down

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Originally Posted by bonanza7369 View Post
I have a 56 with 292 engine 4 barrel tea pot carb. the carb was rebuilt last year. I am getting some backfiring thru the exhaust when engine braking.
The car has glasspack mufflers.
Could this be caused by a to rich fuel mixture or possibly timing problem.
Engine runs smooth and accelerates well. It also is hard to start after it sits for a couple days(takes a lot of pumping of the gas pedal)
I'm having the same problem with a 351w with 2X4s in a 40 ford.I have rebuilt both edelbrock carbs,changed plug wires,and checked for exhaust leaks.
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Old 02-10-2018, 02:46 PM   #22
Fordestes
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Default Re: engine backfire when slowing down

Another source for ignition is Bubbas in Indianapolis . He is great to deal with and Knows his stuff. check on the flathead v-8 side of the Fordbarn.
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Old 02-10-2018, 08:57 PM   #23
KULTULZ
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Post Re: engine backfire when slowing down

Quote:
Originally Posted by Milt/Las Vegas View Post

I'm having the same problem with a 351w with 2X4s in a 40 ford.I have rebuilt both edelbrock carbs,changed plug wires,and checked for exhaust leaks.
Read This- https://en.wikipedia.org/wiki/Back-fire

See if it makes any sense and get back.
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