Skip the auto shop - Our mechanics make house calls

Q: Crank but not start

asked by on

When I tried to change my fuel filter the other day it wasn't successful. After I tightened the filter and tried to start my car it would crank, but not start unless I pressed on the gas pedal. Then I tightened the bolt as much as possible and the same thing happened. Could there be air in my fuel filter lines that need to be bled out? Do you have any ideas?

A: Thanks for writing in about your 1990 Merce...

Thanks for writing in about your 1990 Mercedes Benz E300. It sounds like the idle valve may be stuck closed and this could be why the engine only starts when the gas pedal is pressed. Due to the pressures generated by the fuel system for injector operation, fuel system air is generally quickly purged when the vehicle is first started.

The fuel system should be checked for leaks and the idle valve checked for free movement of the valve. You may want to enlist the help of a mechanic, such as one from YourMechanic, who will have the tools and equipment to access the fuel system and can diagnose and correct the no start issue for you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Truck stuck in reverse

Hello. This is a known concern and GM has issued TSB 01-07-30-002E. It lists the symptoms you are experiencing and has a list of some testing to be performed leading to a wiring concern or a faulty ignition switch. You...

Q: Cabin air filters on a 2010 Altima

Most of them actually do come with some kind of the tray. Maybe yours is lost and you need to get another one. But they do generally have arrows this side up or air flow downwards that show you which...

Q: Power locks orthopedic seats

Both of these systems are controlled by fuse 'A' in the electrical center of your 1990 Mercedes-Benz 300E. If this fuse is blown it would prevent both the locking and orthopedic seats from functioning. I doubt it was related to...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.