Fuel Injection problems, strange |
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Fuel Injection problems, strange |
86motoman |
Aug 12 2004, 06:06 PM
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#1
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Member Group: Members Posts: 200 Joined: 13-May 04 From: Walla Walla, WA Member No.: 2,064 |
I have a fuel injection issue. I bought the car not running. It has djet (?) Fuel Injection. It hasn't run for about five years, though they said it was running when it went in the garage.
It does start and run, but strangely it seems to run after I unplug the fuel pump relay. The fuel pump relay is mickey moused. Meaning it has a hot wire coming from the coil and wrapped around one of the relay posts and then plugged in. Without that wire the fuel pump does not turn on. With the fuel pump running the car does not want to start. After unplugging the fuel pump relay it starts good and runs good for a few seconds. I know little about fuel injection but am willing to learn. I really want this to work for me. I have a multi-meter. What should I check first? |
lapuwali |
Aug 12 2004, 06:25 PM
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#2
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Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743 |
When you say it won't start, you mean it will crank but not fire? I'm guessing that the jury rigged wire is grounding the coil. Try running a wire directly from some source of switched +12 directly to the fuel pump and see if it will run that way. Make sure the wiring at the pump itself is correct (not reversed). If you can get it to keep running, then go through the wiring around the relay board and do it up properly. There are plenty of wiring diagrams and relay board diagrams on this and the Pelican boards to guide you, as well as the Haynes manual.
While you're there, take a very close look at all of the rubber hoses from the tank to the pump to the injectors. If it's been sitting like that for some time, chances are good the lines are old and cracked, and can easily leak fuel. High pressure fuel and dodgey electrics mean very nasty fires. |
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