924Board.org

dwak · Joined: 03 Nov 2002 Posts: 839 Location: Eastern Ontario

Been driving my 924S and 931 around a bit after a two year break and they're very smooth at speed but at low speeds around town etc they're a pair of trucks. Shuddering and bucking. Were they like this new?
If not, what's the usual cause? A worn drivetrain?

dwak

PS I'm on the hwy today in the 931 doing about 90 MPH and the pack of vans and SUV's in front of me pull away like I'm standing still!
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2x924NA's for parts
931
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Tigger937 · Posted: Tue Aug 29, 2006 12:46 pm Post subject:

Does this mean you had 2 year old gas in the system? Almost sounds like gummed up fuel injection components. You might try running a bottle of Porsche recommended Chevron Techron through the fuel system to clean things out a bit. If that doesn't clear things up, check your injector spray patterns.
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1981 931 (Concours)
1982 931 (Daily Driver)

"Think outside the box"

dwak · Joined: 03 Nov 2002 Posts: 839 Location: Eastern Ontario

The fuel has been used up and replaced but I might try that Techron for the injectors.

thanks,
dwak
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2x924NA's for parts
931
924S

Tigger937 · Posted: Tue Aug 29, 2006 1:36 pm Post subject:

If you haven't already done so, change your fuel filter too.
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1981 931 (Concours)
1982 931 (Daily Driver)

"Think outside the box"

StienbargerR · Joined: 28 Oct 2005 Posts: 1362 Location: Richmond, IN

Yeah, deff. change the filter, and use injector cleaner. Seemed to help my car out alot.

Ryan
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1978 924 NA
-250lb lowering springs, Euro Pistons