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Baja Forums -:- VW Volkswagen Bug, Baja, Bus, Sandrail and Thing -:- VW Volkswagen & Baja Bug General Discussion -:- Back firing on deceleration
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Back firing on deceleration
Bug, Baja, Thing and Buggies. Most every thing that will not fit any any other area. See list of other Forums for better topic placement...Volkswagen General Discussion
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pschneider
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Post Post subject: Back firing on deceleration
Posted: Thu Sep 16, 2010 09:54 PM
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Just put a new tri mil exhaust on my bug since my old exhaust was rusting off, and threw a pod filter on there and now I am getting back fires when I let off of the accelerator. I have read that it could be leaks in the exhaust but I am not sure. Any help would be appreciated.

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kyle_pc_75
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Post Post subject: Back firing on deceleration
Posted: Thu Sep 16, 2010 10:46 PM
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Yep, most likely exhaust leaks. Check your bolts and gaskets for tightness. Flanges are sometimes not quite flush and may need double gaskets.

Kyle


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perrib
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Post Post subject: Re: Back firing on deceleration
Posted: Fri Sep 17, 2010 01:42 PM
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Exhaust leak. The thin exhaust flanges are often slightly bent as delivered.
If you don't see carbon tracks have some one block the exhaust while it is running and you should be able to find it.

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pschneider
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Post Post subject: Back firing on deceleration
Posted: Fri Sep 17, 2010 02:38 PM
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I think the leak is coming from where the exhaust meets the heater boxes. I know that the gaskets there were looking pretty rough but I didnt have a problem with my old exhaust. Ill see what I can do. Thanks guys.

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perrib
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Post Post subject: Re: Back firing on deceleration
Posted: Fri Sep 17, 2010 04:11 PM
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New gaskets and a bit of muffler cement work great on heater box to header connections.

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pschneider
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Post Post subject: Back firing on deceleration
Posted: Fri Sep 17, 2010 05:45 PM
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Does anyone know what the circular gasket between the exhaust and the heater box is called?

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perrib
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Post Post subject: Re: Back firing on deceleration
Posted: Sat Sep 18, 2010 04:25 AM
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tail pipe installation kit 111 298 051 may have a letter at the end

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