Porsche 996 backfire

[Teri945]

I have a 1997 996 which until today has been great.
I went to start it and there was a really loud backfire.
The car will start but idles really rough and continually backfires,if I try and rev the engine it will increase slightly then die.
Any help or advice would be greatly appreciated.

[ClarkPB]

Coil pack?

[Rockster]

Teri945 said:

I have a 1997 996 which until today has been great.
I went to start it and there was a really loud backfire.
The car will start but idles really rough and continually backfires,if I try and rev the engine it will increase slightly then die.
Any help or advice would be greatly appreciated.

The engine is sick. May be a bit of a fever (likely) or it may be terminal (unlikely).

Regardless it isn't a good idea to run an engine that reads as sick as you describe.

Best to avoid running the engine and instead get the car to a pro tech for his expert diagnosis.

[FisiP1]

ClarkPB said:

Coil pack?

Would be my first guess too.

[sportsandclassic]

Hi, where abouts are you in the country ?

Doubt its coil pack related as if failed there would be no spark to create the back fire... Sounds more serious.

As said best not to drive it. When does it back fire ? On idle under load..? Is it just one back fire or is it a misfire?

Mike

[Teri945]

I am in essex.
there was one large backfire when starting and now a number of small backfires when ticking over.
it ticks over as if not firing on all cylinders.

[Martian O]

Teri945 said:

I am in essex.
there was one large backfire when starting and now a number of small backfires when ticking over.
it ticks over as if not firing on all cylinders.

Can you get the car to these guys? If not, they can offer a collection service from you.

www.psrautomotive.com