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2004 V70 hard to start V70-XC70 2004

posted by  KlausC on  Mon Jul 1 09:41 CST 2019
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last visit: Fri Oct 24 10:15 CST 2014
[RELATED]

Kudos for hooking up a fuel pressure gauge! The pressure should go to zero after X hours, but the fuel line should not drain back to the tank, which is what I suspect. The constant pressure you have will not change with rpm's while not in gear, no load on the engine.

It might be your fuel pump, probably original, and not fun to replace. Part of the pump is a valve that closes to keep fuel in the line, plus, if the pump is getting weak...

There is also a fuel pressure sensor up on the fuel rail which is a known problem.

Too bad you can't drive and see the fuel pressure under load.
--
Keeping it running is better than buying new






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