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Re: [GMCnet] back fire in 78 Birch with a 403. [message #138652 is a reply to message #138627]

Fri, 12 August 2011 06:55

Steven Ferguson

Messages: 3447
Registered: May 2006

Karma:

Senior Member

Have her sit in the back next time:>)

Backfires can sometimes blow off vacuum lines so you need to check for
vacuum leaks. Doing what Jim says will help you find them.

On Thu, Aug 11, 2011 at 9:40 PM, steve <mr34@pipeline.com> wrote:

> Hi
> Need help with a backfire problem. I was on a short trip with my coach
> when it started to backfire threw the crab.It seemed to be worse when
> under power like going up a hill. I replaced plugs and wires checked
> timing and had to advance timing about 10 deg.and it would run a low
> speed then die. Checked vac and it seemed to be normal.but it still dies
> under a little power.
>
> I am about to give up and and blame the timing chain. which i really
> hope it is not the prob.
>
>
> I hope someone on the net that has had this prob..and found a
> CURE.:-( :-D
>
> P.S., the engine just turned over 100K. Thank Steve Helena Mt
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--
Steve Ferguson
Sierra Vista, AZ
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[Message index]

		[GMCnet] back fire in 78 Birch with a 403. By: Steve Phillips on Thu, 11 August 2011 23:40
		Re: [GMCnet] back fire in 78 Birch with a 403. By: jimk on Thu, 11 August 2011 23:47
		Re: [GMCnet] back fire in 78 Birch with a 403. By: Steven Ferguson on Fri, 12 August 2011 06:55
		Re: [GMCnet] back fire in 78 Birch with a 403. By: Bob de Kruyff on Fri, 12 August 2011 23:22

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