Mike 92 XLT
Explorer Addict
- Joined
- July 27, 1999
- Messages
- 1,507
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- City, State
- Manhattan Beach, CA
- Year, Model & Trim Level
- Expensive German Stuff
Hey everyone
I've been trying to chase down a fuel system problem for awhile now. Here are the symptoms: every once in awhile, the car will go through this phase where it doesn't like to start on the first try. I can hear the fuel pump running, but when I try to crank it, it either cranks and doesn't catch, or it starts and barely idles. It always fires right up the second time. After a week or two, these symptoms will mysteriously go away for awhile, then start again. Next symptom: there is a fairly decent fuel smell when the car is running. I have replaced the evap charcoal canister and solenoid and it didn't fix the problem. Next symptoms: fuel mileage going steadily downhill and blackening around the tip of the exhaust pipe.
So today I went and hooked up a pressure gauge to the system. Turned the key on and the pressure went to 40 and then right back down. So the system isn't holding pressure, which explains the hard starting.
So right now I'm thinking either bad FPR, leaking injector, or both. A bad FPR would explain the poor mileage and the black exhaust pipe, but the injector would explain the fuel smell, and either would explain the hard starting. But would a bad FPR cause a fuel smell too? And when the FPRs go south, don't they usually show an abnormally high pressure, like around 80 or 90? What does everyone think?
peace
Mike
I've been trying to chase down a fuel system problem for awhile now. Here are the symptoms: every once in awhile, the car will go through this phase where it doesn't like to start on the first try. I can hear the fuel pump running, but when I try to crank it, it either cranks and doesn't catch, or it starts and barely idles. It always fires right up the second time. After a week or two, these symptoms will mysteriously go away for awhile, then start again. Next symptom: there is a fairly decent fuel smell when the car is running. I have replaced the evap charcoal canister and solenoid and it didn't fix the problem. Next symptoms: fuel mileage going steadily downhill and blackening around the tip of the exhaust pipe.
So today I went and hooked up a pressure gauge to the system. Turned the key on and the pressure went to 40 and then right back down. So the system isn't holding pressure, which explains the hard starting.
So right now I'm thinking either bad FPR, leaking injector, or both. A bad FPR would explain the poor mileage and the black exhaust pipe, but the injector would explain the fuel smell, and either would explain the hard starting. But would a bad FPR cause a fuel smell too? And when the FPRs go south, don't they usually show an abnormally high pressure, like around 80 or 90? What does everyone think?
peace
Mike
Jeebus, can I get them anywhere else for cheaper? No CEL though, but that doesn't really mean anything I suppose. I think I'm going to try the cheap fix first. I'll keep everyone updated. Thanks toad!
