In a message dated 09/07/2002 2:09:22 PM Pacific Daylight Time,
kasl100@navix.net writes:
> We have had problems for months with my sons S5. Once started and
> driven, it begins to run rough as if on only 1-2 cylinders. Today we did
> several tests and eliminated the electrical side. We are now focusing on
> the twin Stromberg carbs. Can I assume the front carb flows the 1+2
> cylinders, and the back carb the 3+4 cylinders? If this is the case,
> the front carn may be bad, as the 1+2 bank of cylinders is lacking
> power. I am thinking a float problem or leak not allowing fuel to mix
> once the car is warmed up and under load. I replaced the fuel pump and
> noticed alot of debris inside, which may have passed into the front carb
> float or jet. Any ideas? Brent
>
Brent -
One thing to check that can result in the symptoms you describe is a
"dropped" needle. Easy to check and fix. Simply take off the air cleaner
and lift the piston with a flat blade screwdriver. Does the needle move up
and down with the piston or does it stay seated blocking the jet? If so,
remove the piston, insert and tighten the needle and refit. Don't forget to
centerize and renew the oil in the dampener.
Good luck -
Al Figler
B395008421 LRX
Woodinville, WA USA
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