12 Valve Engine and Drivetrain Talk about the 12V engine and drivetrain here. This is for 1994-1998.5 engine and drivetrain discussion only.

maximum fuel pressure

Old Jul 2, 2010 | 09:13 AM
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apwatson50's Avatar
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maximum fuel pressure

Sorry, normally I would search, but the search function appears to be broken.

Can someone tell me what the maximum pressure a 2nd gen piston lift pump will create?

thanks!
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Old Jul 2, 2010 | 10:13 AM
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infidel's Avatar
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From: Montana
It will make over 60 psi but anything over 45 psi can blow out internal injection pump seals causing diesel fuel in your oil.
Repair=$$$

High fuel pressure has also been known to crack fuel filters.
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