Help Please

Guest · May 4, 2004

Hi All

which in my I have an 86 924S and during my last drive I noticed a faint smell of what seems to be exhaust fumes in the cabin. Does anyone have an idea of what may be causing this as I need to get this one sorted asap as it is obviously dangerous to drive at the moment. [

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I think the backbox may be on the verge of giving up - could this be part of the problem? If not is it more likely to be a "seal" issue somewhere on the car?

Any help on this one would be greatly appreciated.

Thanks

Andy

Guest · May 5, 2004

It might be the rear hatch not closing properly and letting in the fumes, this happened on the MK2 Golf, might be the sme on the 924 or not. Also if you have an after market exhuast that might be shorter than the standard rear box, this can causes the fumes the go up under the bumper (or through the rear hatch) and through an old seal some where.
This is whats happen to friends cars and my old cars, not on my 944.

PaulHere · May 5, 2004

That's right Andriko, if the rear hatch doesn't quite seal then exhaust fumes can get sucked in - not nice [:'(]
Mine did this for a while until I cleaned and adjusted the seal - adjusting the hatch pins is fiddly but may make the hatch seal better - failing that you may need new seals

Guest · May 5, 2004

Thanks for the pointers

It sounds like this may be one of those "trial and error" problems........... When you say that gases could be escaping under the bumper, do you have any clues as to where they can get into the car from there?

Any ideas of how expensive and easy/difficult it is to replace the tailgate seals?

As I said in the original post I think the back box is on it's last legs so will be replacing that in case there is a slight leak that may be contributing to the problem.

Any other ideas?

Cheers

Andy

Guest · May 5, 2004

Hi Andy,
If you have fumes escaping from the back box, as they make there up they could rise in through drain holes, old seals with gaps. On my golf when it had an after market exhaust which was to short and didn't stick out far enought pass the bumper as it should, it cuased fumes to collect under the bumper and get into the boot through drain holes. But this may not be the case on your 924.

Guest · May 5, 2004

Thanks again Andriko

I'll check this out as a possibility. This brings up another question - any suggestions from those in the know about a good quality replacement / aftermarket exhaust.

Cheers

Andy

Guest · May 5, 2004

Hi Andy me agian hehe.
I'd always say a Porsche Stock is best, but people have there own opinion's on this subgect.
Try www.essentialstyling.com they do good stainless steel replacements.

PaulHere · Nov 18, 2009

What year is your car? 2 litre or 2.5 engine?

If I can use my car as an example; this is all easy stuff:

Change the earth lead, the exsisting one may not be working.
Check the rubber air hoses under the bonnet to see if they are all connected.
Remove the distributor cap and check all is clean inside, check the rotor arm for condition and that all leads are in place.

There are many, many other things to check so give us more information when and how the car behaves so we can get more specific in diagnosis.

It can be so simple sometimes!