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korey
Dodge Dakota
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1/22/2005
16:18:26
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 Subject: Backfire
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Message:
Hello i drive a 91 v8 dodge dakota and i am having a backfire from the exhaust at deceleration the cat and exhaust are new. New tps and oils pressure switch..there are no vaccum leaks no exhaust leaks.tb is clean no oil residue a few burn looking marks the cap and rotor,plugs,plug wires have been replaced about 1000 miles ago.i have done everything i know how to do.if someone could please help me...
thanks
korey
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Woodrow
Dodge Dakota
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1/22/2005
18:11:41
|  RE: Backfire
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Message:
Well,I have the same problem with my 93 5.2.Backfires out exhaust on decel.My take, I think it is a bad valve.maybe sticking open a little. It only does it when it is warmed up not when cold.It don't give any codes or anything.I was going to take it apart in a few weeks to see what's up.But I need to see how I feel.
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korey
Dodge Dakota
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1/22/2005
19:16:30
| RE: Backfire
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Message:
not sure what u mean new to all the motor stuff u mean like internal motor or what could u please explain
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Woodrow
Dodge Dakota
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1/22/2005
21:19:57
|  RE: Backfire
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Message:
When I talk about valves,I am saying that something could be wrong in one of the heads.You need to do or have a compression test done to see if you have a bad valve or valve seat in one of your heads.If you have a valve sticking open just a little then it will pop or backfire,either out the carb or TB if intake or if it is an exhaust valve it will pop or backfire out the exhaust.
Now you say you had new exhaust put on.Well more than likly it was doing it before you got the new pipes,the reason I say that is because mine did the same thing and once I got my new pipes it made it more noticable or uh embaressing.Don't take what I say to heart ask other people and get their take on this, but this is what I am thinking it could be...Hope it helps...And before you dig into you trucks motor or trans do your home work.
Good luck and keep me informed!!!!
Wood
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