03 ML RUNNING ROUGH ON 1/4 GAS TANK GAS

Asked by Apr 19, 2017 at 04:33 PM about the 2003 Mercedes-Benz M-Class ML 350 4MATIC

Question type: Maintenance & Repair

WHEN GAS TANK IS FULL RUNS PERFECT ,WHEN GAS GOS LOW TO 1/4 OR LESS OF GAS TANK START RUNNING ROUGH ON STOP ALMOST DIEING BUT IDLE GOES UP AGIAN AND RUND OK TILL FEW STOP AGAIN SAME PROBLEM

3 Answers

31,775

replace fuel filter !!!! ... check pump pressure...a full tank of gas will help a weak pump to puse more fule

THANKS,I WILL TRY FIRST WITH FUEL FILTER AND HOPE ITS NOT THE FUEL PUMP

31,775

also...is it in good turue ? its easy to change those spatk plugs and look for a vacuum leak...kelly

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