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Discussion Starter · #1 ·
Hi Guys I recently bought a low fuel pressure warning light that comes on when pressure drops below 8 psi. I hooked it up and wouldnt you know it the light was on all the time even just off idle. So I went to cummins and got a new lift pump and put that in yesterday. Everything was great after that, no light on at any rpm. So I waited for the truck to cool down and then sprayed engine degreaser everywhere to clean up the mess and hosed down the engine bay. Now today I take the truck out and the low pressure light starts flickering at about 2100 rpm and comes on after that intermitently. What do you guys think? Do I have water from the engine shampoo in a connection or the lift pump housing. any help or ideas would be greatly appreciated.
 

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Discussion Starter · #5 ·
Ok I guess I better start shopping for a fuel pressure gauge kit. Anyone got any suggestions? It would be nice to get a complete kit.
 
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