Low fuel pressure

2001 MERCEDES BENZ 270ML
125,000 MILES • 2.7L • 5 CYL • 2WD • AUTOMATIC
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MIKE20670
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It will not start.
Spray a bit of easy start in air intake it will start.
AA called no fault on diagnosic. Fuel pressure 100psi.
Any suggestions please?
Jan 26, 2020 at 10:04 AM
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94 TRANSAM
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I would check for a plugged fuel filter first. You have all the symptoms.

I don't have a listing for a 270ML. Instructions for a ML370 below. If these don't work let me know.

Rich
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Jan 26, 2020 at 6:27 PM
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MIKE20670
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I've replaced fuel filter.
But still will not start except with easy start.
I did run fuel low on gauge. Could this have caused a blockage somewhere?
Fuel pump is on the engine near the front.
Many thanks.
Mike
Jan 27, 2020 at 12:41 AM
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94 TRANSAM
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Your fuel pressure should be 54 to 61 lbs. If it is 100 lbs then your fuel pressure regulator has failed. There is a fuel shut off safety feature built in so the car will not start.

As I said, I have no listing for your car. The closes I get is the 370 and there is a TSB (technical service bulletin) out for a fuel pressure issue with an updated larger fuel filter which requires installing larger fuel lines. I don't know if this applies to you car but it is the same motor. I would suggest calling a dealership and asking and we can go from there.

Rich
Jan 27, 2020 at 9:09 AM