Help, Motor won't start. Merc 454 Mag EFI
#32
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I had an issue with an engine not starting once and what i did was swap the fuel feed lines on the engines. And the motor started right up. Ended up being a broken Fuel pick up.
My lines coming out of the tank didn't have enough length to swap pick ups so i just went to the part store got rubber hose with a union type fitting and extended the fuel line.
This will help you find out if its a Fuel issue
My lines coming out of the tank didn't have enough length to swap pick ups so i just went to the part store got rubber hose with a union type fitting and extended the fuel line.
This will help you find out if its a Fuel issue
#33
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Ok, turn key and no fuel pump kick on, pressure tested Schrader Valve and no fuel pressure. Swamped relay with good side motor and no fuel pressure. So I'm down to a blow fuse which I can't find the elec fuel pump fuse, or fuel pump is bad. Any idea where the electric fuel pump fuse is at?
#34
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I checked with a fuel pressure gauge and nothing. Turn key and no fuel pump prime. I swapped the relay from the working motor and still no fuel pump. So I think I'm down to fuel pump or fuse. I can't find a fuse for the elec fuel pump and can't get a reading with volt meter.
#35
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What do you mean when you say "i cant get a reading with a voltmeter". As in there is no voltage present at the fuel pump connector with the key on? Or physically cant get the leads connected?
There should be a fuse like fixx said. Actually, I think there are 2 or 3 fuses on that engine. At least 1 being for the fuel pump. Can you trace the wires feeding the pump
There should be a fuse like fixx said. Actually, I think there are 2 or 3 fuses on that engine. At least 1 being for the fuel pump. Can you trace the wires feeding the pump
#36
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Ok, turn key and no fuel pump kick on, pressure tested Schrader Valve and no fuel pressure. Swamped relay with good side motor and no fuel pressure. So I'm down to a blow fuse which I can't find the elec fuel pump fuse, or fuel pump is bad. Any idea where the electric fuel pump fuse is at?
#37
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What do you mean when you say "i cant get a reading with a voltmeter". As in there is no voltage present at the fuel pump connector with the key on? Or physically cant get the leads connected?
There should be a fuse like fixx said. Actually, I think there are 2 or 3 fuses on that engine. At least 1 being for the fuel pump. Can you trace the wires feeding the pump
There should be a fuse like fixx said. Actually, I think there are 2 or 3 fuses on that engine. At least 1 being for the fuel pump. Can you trace the wires feeding the pump
#38
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also check the circuit breakers on the dash,,could also be a fuse panel in the boat..my formula has 3 of them..
BTW @ he fuse's did you test them for power ? just looking at them does not mean they are good,,i have found blown fuse's that looked good but were blown..
BTW @ he fuse's did you test them for power ? just looking at them does not mean they are good,,i have found blown fuse's that looked good but were blown..
Last edited by FIXX; 05-05-2014 at 06:30 PM.
#40
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No didn't test but I did pull the pump and ran power to it and it ran. Put it back in and ran power to it again while cranking and no fire. So now back to square one. Turn key, no warning buzz and no fuel pump prime but motor cranks. Spray Stater Fluid in and runs on that. So like others mentioned, safety or started switch is acting funny and not allowing to power the elec fuel pump. Thanks again to all, thought I had it this time.