Fuel pressure spike

tonga3

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Every once and a while my fuel pressure will jump to 60psi when I let off the gas. It seems as though I have to get on the gas again to get it to fall. Anyone else ever get this?

Cheers
 

tonga3

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I should also clarify that it actually will go down to about 30 psi when I first let off but after coasting for a couple of seconds it jumps to 60 psi. All while in gear.
 

cj428mach

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Its the joys of having a returnless fuel system. If you want to eliminate it go full return system. (assuming you're reading PIDS in a data log and not an actual fuel pressure gauge.)
 

tonga3

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Its the joys of having a returnless fuel system. If you want to eliminate it go full return system. (assuming you're reading PIDS in a data log and not an actual fuel pressure gauge.)

I'm actually reading off of a gauge. Going return this winter but want to make sure I'm not doing any damage in the short term.

Cheers
 

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