Ive got a lumpy 911

Ive got a lumpy 911

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popov123

Original Poster:

4,084 posts

235 months

Wednesday 1st December 2004
quotequote all
I washed the car the day before yesterday, and was looking forward to a good 20 mile blat out the recording studio yesterday. Unfortunately on startup it just didnt sound or feel quite right - almost like it was running a cylinder down...gentle revving whilst at standstill gave the occasional pop from the exhaust too.

I phoned my local Porsche specialist (Autowerke) who suggested it could be the dizzy cap. I did give the cap a little wipe round and put back to see if that would sort it but sadly shes still lumpy.

This is my first little hiccup with the car and I cant help but be a little worried.

Anyone else have this problem? - is it a common thing with 911s? (mines an '89 Carrera 3.2 by the way).

clubsport

7,258 posts

258 months

Wednesday 1st December 2004
quotequote all
Had this before...be careful when washing,it sounds like you got the dizzy wet by allowing water in through the rear spoiler grille...The dizzy sits just below...be careful or use WD40 to clear it. Once the car gets warm the water will burn off and run as normal.

popov123

Original Poster:

4,084 posts

235 months

Wednesday 1st December 2004
quotequote all
I tried just running it for a while to let it warm up and hopefully dry out any rogue moisture but that didnt do the trick. I popped the cap off and gave it a wipe round too but that didnt seem to help either.

I DO remember getting the rear spoiler a lot wetter than I would normally though!!!

Im surprised someone hadnt warned me about this before - do you need to be especially careful when washing a 911's rear end?

How does this work out when it throws it down with rain then???





clubsport

7,258 posts

258 months

Wednesday 1st December 2004
quotequote all
It's different in the rain, when you are travelling forward, motion carries the rain away.
I don't know if you have hosed the thing down but maybe you have got one of the plug lead wet. Obviously difficult over the net, but something has got wet and by removing leads and applying Wd40, hopefully you will solve the problem.

popov123

Original Poster:

4,084 posts

235 months

Thursday 2nd December 2004
quotequote all
I am very pleased to report that the ol' girl is back firing on all cylinders

Turned out to be plug no.5 being fouled up causing my lumpy ride.

The local specialists (Autowerke in Norwich) were incredibly friendly and helpful and Im looking forward to going and seeing them, when they have a quiet moment, to get a 'guided tour of my own car' using their ramps etc... Jolly decent of them I thought.

Its a huge weight off my mind having the car purring beautifully again

poorcardealer

8,524 posts

241 months

Friday 3rd December 2004
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wonder why plugged number 5 fouled up??

Good news she is running great again !

verysideways

10,238 posts

272 months

Friday 3rd December 2004
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I've had this before - one one 911 turned out to be a wet dizzy cap but on the other it was a corroded coil lead to one of the dizzy caps. Fine when dry, rough when wet.

Just FYI, in case someone searches the archives in future.

VS

popov123

Original Poster:

4,084 posts

235 months

Saturday 4th December 2004
quotequote all
poorcardealer said:

wonder why plugged number 5 fouled up??

Good news she is running great again !


From what I remember of the phone conversation I had with the guys:

As my engine parts are reasonably worn (at a tad under 113,000 miles) there is a small amount of oil seapage (sp?) - Cylinders were checked for leakage % and were within acceptable boundaries so nothing to worry about at the mo. The general impression I got was that this isnt an uncommon occurence...

All I have to do is save up the £££'s for a top end rebuild in the next few thouand miles.