[s-cars] the bucking S4 part 2 read this one and Ignore the otherpost please. :-)

[chris chambers]

Thanks everyone!

There have been many theories and suggestions thrown out regarding my
"bucking" S4. The most common are check the moisture trap and change
the spark plugs.

Some backgound information,I jus replacedmy hoses with Samco hoses,
could a boost leak be causing this? Autosport Werks has suggesttted hat
it is a boost or vacuum leak.

What I described as bucking is like the engine losesal power
and the nose of the car dives. If I let off the accelerator and
slowlyaccelerate I am fine, unless I mash the throttle down again in
which
case I lose all power again.

I started driving this morning and the car responded normally, as both
the car and ambient air temperature warmed up the bucking returned.
I have recently realized that if I accelerate slowly the bucking
doesn't happen, it is when I mash the throttle down to accelerate
quickly that the bucking happens. When I am in third gear it happens
around 4200rpm, second gear it is around 3800 rpm.

I have finally found a source locally for the plugs, I will have to go
to the dealer to get them. Their price is $16.50 each, which compares
favorably to other sources at $15.65 each.

Unless there are any other suggestions I plan on replacing the spark
plugs tomorrow, and recheck all of my turbo hoses. The plugs have been
in there sine before I purchased the car, I have put over 35,000
trouble free miles on it and just went over 200,000 miles so who knows
how old the plugs are.

Thanks for all your input, I am on several car lists and this is bar
far the best one! Not only by the knowledge, but by the overall polite
nature of the members. If you want to see good pissing matches become a
member of the Rennlist 914 list! :-)

Thanks again!

Chris


=====
93 Audi S4 silver, 93 Audi S4 black, 85 VW Scirocco 2.0 not stock :-)
73 Porsche 914 2.0 (67,000 original miles, stock), 67 GMC Long Step pickup 95% complete frame off restoration, 86 VW Scirocco Wolfsburg

"If things seem really under control, you're not going fast enough.  -
Mario Andretti"

"It's not how much you make, but how much you don't spend!"

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