My 560 sel starts very hard especially in colder weather or after it sits . on 1990 Mercedes-Benz 560SEL

If you hit the air intake with a dab of either it starts and runs perfect. Also starts great after warmed up, it seems to have low fuel pressure on cold starts

by in Springfield, IL on February 10, 2013
1 answer 2 comments
ANSWER by on February 10, 2013
check your fuel pressure when it is cold
COMMENT by on March 03, 2013
Fuel pressure is very low if any until the motor really gets cranking or engine is warm then it is fine. Waht would correct that situation?
COMMENT by on March 03, 2013
a new fuel pump

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