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Help needed diagnosing- will only idle after warm-up 1991 240 200

posted by  keithostertag on  Thu Mar 22 10:50 CST 2012
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last visit: Tue Jun 17 15:10 CST 2014
[RELATED]

Hey Thanks Travis. I don't think the very faint gas smell from the vacuum hose is enough to indicate a problem with the pressure regulator. Next month I may get a chance to have an experienced mechanic friend check the fuel pressure.

I replaced the "sock" on the in-tank fuel pump today. Didn't go too badly- spent a few moments wondering how to get it out, but eventually it came out easily. The old one didn't really look that bad, and in fact I decided not to replace that small in-tank hose since it looks like new. We'll see in the next few weeks if the new sock helps. I'll also wait awhile to test the fuel rate/flow again.

After replacing the broken air hose the car is running OK.

Keith
--
1991 240 Sedan B230F LH3.1 M47 300K miles






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