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No-start, pump running, plugs dry, good spark. 700 1989

uid 24778's pic
posted by  khanawalt on  Sun Sep 3 14:32 CST 2006
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last visit: Thu Dec 6 21:03 CST 2007
[RELATED]

I can hear the under-car fuel pump running both at key-on and after I stop the starter. I drove it home about 2 miles, but it was running poorly with a leak in the fuel return hose. I fixed that hose and it will not start now. Pulled the plugs, they are dry and sparking.

I believe the fuel pump(s) are triggered by the ignition system, but apparently the injectors are not opening or there is a blockage. Not much of a blockage though, because fuel was flowing out of the return line quite readily.

I also tried starting it while the return line was pinched off in case there was a lack of pressure. Then the old hose just behind the fuel pressure regulator started leaking past the clamp, so I replaced that hose too.

Next step is a new fuel filter, I guess, but I'm reasonably sure that's not my problem. You gurus ought to have the answer, right?
--
Kenny H Three SUVs, two cars and seven motorcycles






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