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MB Paul
MB Paul, Mercedes Technician
Category: Mercedes
Satisfied Customers: 3567
Experience:  Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes
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380se Mercedes wont start. I replaced fuel

Customer Question

380se Mercedes wont start. I replaced fuel pump,filter,accumulator.I need to replace fuel relay crossed over jump 7and 8.Jump it over and still wont start.
Submitted: 4 months ago.
Category: Mercedes
Expert:  Lou P. master tech replied 4 months ago.

Hello, lets try something else besides fuel , pull out a few spark plugs and see if they are wet, you mat have an ignition issue.

Customer: replied 4 months ago.
Will check anf respond. Thank u
Expert:  Lou P. master tech replied 4 months ago.

ok sounds good, if they are wet i advise we clean and dry them all and reinstall, them disconnect the fuel relay, and see if the engine will start and run on starter fluid. if not we check for spark issue.

Customer: replied 4 months ago.
Will start with starterfluid then stop.Xhecked sparkplugs not wet. Diconected fuel line frm fuel distributor not coming out frm line, not recieving fuel frm fuel pump.
Expert:  Lou P. master tech replied 4 months ago.

ok so we have a fuel issue. Now we check for power and ground at the pump while the relay terminals are jumped.

Customer: replied 4 months ago.
Took the fuel pump and checked manuely. Works fine.Reinstalled it power at. Pump after jumuping 7 and 8., but fuel not reaching injectors
Expert:  Lou P. master tech replied 4 months ago.

when you removed the pump did fuel come pouring out of the line from the tank?