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fuel delivery mystery 200 1985

posted by  someone claiming to be nmwagon on  Sun Jun 22 16:16 CST 2008 [RELATED]

My 85 240 with over 250k miles just quit. The cranking sounded "dry", so I started the standard fuel delivery diagnosis. This is what is happening:

When I jump fuse terminal 4 and 6, I can hear the pumps and fuel is being delivered (I opened the line just before the fuel rail and checked), but no start.

When I instead jump the fuel relay, I can not hear the pumps, and of course, no start.

What is electrically different about jumping fuse 4 and 6 vs. jumping the relay? If I knew this, maybe I could figure out what's wrong.






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New fuel delivery mystery [200][1985]
posted by  someone claiming to be nmwagon  on Sun Jun 22 16:16 CST 2008 >


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