V10 Starting woes...
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V10 Starting woes...
Greetings..
2001 Excursion 2wd Limited w/V10. Upon starting, engine rolls easily but fails to fire up, acts as though fuel starved. Check inertia switch also. It gives zero signs of life. Sometimes, it will stumble start and die 2 secs later and back to not starting. Out of the blue, turn the ignition and it starts immediately.
Miles on the Ex is 120k, running great otherwise. I was hoping a relay going out but their are no schematics or charts from what I can find, does anyone have one? Also, maybe a fuel pump? The COPS are all new in the past month, battery is strong...I have not checked fuel pressure...thought I would try the easy way first but no charts in my manuals
Bob-
2001 Excursion 2wd Limited w/V10. Upon starting, engine rolls easily but fails to fire up, acts as though fuel starved. Check inertia switch also. It gives zero signs of life. Sometimes, it will stumble start and die 2 secs later and back to not starting. Out of the blue, turn the ignition and it starts immediately.
Miles on the Ex is 120k, running great otherwise. I was hoping a relay going out but their are no schematics or charts from what I can find, does anyone have one? Also, maybe a fuel pump? The COPS are all new in the past month, battery is strong...I have not checked fuel pressure...thought I would try the easy way first but no charts in my manuals
Bob-
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Joined: Aug 2003
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From: Isanti, MN
When's the last time you changed your fuel filter? If it's current, the next thing to do would be get a fuel pressure gauge to see if you're getting enough fuel pressure at the rails to start.
Any trouble codes? Is your CEL on?
Any trouble codes? Is your CEL on?
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well it looks like a pump..went out and started it about 4x in a row, then it would not...went to the schrader valve and depressed it, just a small trickle came out so I have no rail pressure. When the motor is running, it runs excellent, did not pull trouble codes, I have no scanner ... no Check Engine Light on either...all is normal excepting it will not start at times and it has become progressively worse...so it looks like tomorrow I start pulling the fuel tank.
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From: Isanti, MN
That's certainly possible, but remember the pump does not run when the key is off! When the engine's not running or cranking the pump doesn't come on with the exception of the one or two seconds immediately after turning the ignition on.
Not sure how the fuel system is on these trucks, but on many vehicles there will be no pressure at the rail without the pump running. Try depressing the schrader valve while a friend cranks the engine over. The pump should cycle on when you're cranking, therefore if you have no pressure at that point it's likely the pump.
Good luck!
Not sure how the fuel system is on these trucks, but on many vehicles there will be no pressure at the rail without the pump running. Try depressing the schrader valve while a friend cranks the engine over. The pump should cycle on when you're cranking, therefore if you have no pressure at that point it's likely the pump.
Good luck!
