Help please - fuel issue
3/27/07, 05:06 AM
#1
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Help please - fuel issue
Help please - fuel issue
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I have an 85 (produced 7/85) LX5.0 (M code) auto CFI - all original equipment, It ran fine when parked for the winter but now won't start.
It's getting spark and will start with fluid
The injectors are firing
The fuel internia switch is set and good
It's getting only trace amounts of fuel at the bleeder valve
I have 12v at the the tank pump but can't here a pump running
I have unplugged the fuel filter and have no pressure there either
I'm thinking the intank pump went bad??
According to everything I've read there is supposed to be a 2nd inline pump - but for the life of me I can't find it - I traced the lines from front to back.
Any ideas
Thanx Todd
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I have an 85 (produced 7/85) LX5.0 (M code) auto CFI - all original equipment, It ran fine when parked for the winter but now won't start.
It's getting spark and will start with fluid
The injectors are firing
The fuel internia switch is set and good
It's getting only trace amounts of fuel at the bleeder valve
I have 12v at the the tank pump but can't here a pump running
I have unplugged the fuel filter and have no pressure there either
I'm thinking the intank pump went bad??
According to everything I've read there is supposed to be a 2nd inline pump - but for the life of me I can't find it - I traced the lines from front to back.
Any ideas
Thanx Todd
3/27/07, 05:27 PM
#2
Sounds like the pump went bad.....
3/27/07, 09:45 PM
#3
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Here you go TStone. I looked it up in my 5.0 book
You have 2 pumps. The one inside your tank is a low pressure electric fuel pump carried in a sump cavity inside the top of the fuel tank. You have to take the tank off to get to it. Drawing through a nylon filter, the intank pump provides pressurized fuel to a high pressure external pump installed inline. You will find the external pump carried on rubber biscuits mounted on a bracket, forward of the fuel tank. The same bracket also carries an inline fuel filter canister plumbed to the engines throttle body.
Hope that helped!
You have 2 pumps. The one inside your tank is a low pressure electric fuel pump carried in a sump cavity inside the top of the fuel tank. You have to take the tank off to get to it. Drawing through a nylon filter, the intank pump provides pressurized fuel to a high pressure external pump installed inline. You will find the external pump carried on rubber biscuits mounted on a bracket, forward of the fuel tank. The same bracket also carries an inline fuel filter canister plumbed to the engines throttle body.
Hope that helped!
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