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79 245 Stumble/misfire 200

posted by  mbliss on  Thu Dec 29 08:47 CST 2005
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last visit: Tue Oct 21 20:49 CST 2014
[RELATED]

I had similar problems until upgrading the in-tank pump. First check is fuel delivery at the engine -- you can uncouple the fuel line and run the pumps by jumping the fuses, should get about a quart in 30 sec. as I recall. If that's okay, crawl under the car and check the delivery to the main fuel pump (observing proper precautions, and run just the in-tank pump when doing the second check, the main pump is cooled by the fuel flowing through it so you don't want to run it with the supply uncoupled.) Checking pressure is the last resort, and requires relatively expensive tools.

IPD sells an upgrade kit for the in-tank pump that I used, but as I understand it, you can buy the necessary parts somewhat cheaper, search the archives here for more detail.

Hope that helps ...


--
'81 GLT 245 @ 259K; '83 DL 175K






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