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Fuel pressure regulator.. Or FPRV they make a shim kit for them. Not sure if it is fix for it or if it needs to be replaced. I am sure other LLY owners will chime in, as it is a pretty common problem
 

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Fuel pressure regulator.. Or FPRV they make a shim kit for them. Not sure if it is fix for it or if it needs to be replaced. I am sure other LLY owners will chime in, as it is a pretty common problem
X2 my FPR is bad and surges as well, just to lazy to fix it:D
 

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Mine has this issue only when I'm in gear it's not bad but i can feel it sometimes when at a light. Parked at idle it's fine.
 

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Mine does this too now I know what to do about it. Thanks guys
 

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Mine has been doing this as well for some time. Does anyone know roughly what this should cost to be done?
What if I don't take care of it? What could happen?
 
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