Thread: Gas in intake?
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Old 06-19-2010, 11:57 PM
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latief latief is offline
1993 300E 2.8- M104
 
Join Date: Aug 2009
Location: Gainesville, FL
Posts: 518
Quote:
Originally Posted by babymog View Post
Most common source is the fuel pressure regulator, forward end of the fuel rail. A hole in the diaphragm will allow fuel to be pumped down the vacuum line and into the intake causing a rough idle after running a few minutes.
I've did the (unplug vacuum line at regulator test) multiple times while the engine is running. no liquids or smell. is that test sufficient or should i go ahead and change it?
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