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330d non start. Fuel issue

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I'm having issues with my 184bhp 330d. It developed a hot start issue that got progressively worse until it wouldn' start at all.

Have replaced pre supply pump and my pre supply pressure is at 3.7

Had it on inpa and codes were

2550 rail pressure control at start               4704 pre supply pressure monitoring

Whilst on inpa it showed that rail pressure was 0 when priming then went to 50 while cranking. 

All faults we cleared and none came back

Any advice would be fantastic, I'm used to working on older cas and mainly landys, so I'm capale of doing the mechanics myself but don' wanna spend silly money fixing parts that aren't broken.


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Mine didn't throw up codes, turned out to be the sensor

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