low fuel pressure
 

95 dodge all stock. I've had problems with this truck running rough and blowing white smoke when starting up cold. Put a new LP on awhile back and no change. I've pressurized the tank several times and looked for leaks...nothing.

Got a fuel pressure gauge put on today and pressure seems to be low. Holding 13 psi at idle. 20 at 2500rpm. On the highway it drops to 10 when I put my foot down.

Could something be restricting flow? (F
(Filter is new)

timing issue .. :s:

^ What he said. A 1995, all stock, chances are extremely good that the pump timing has never been messed with and has probably slipped. It will do that, and it doesn't take two decades... so I bet you're probably 3-4 degrees low at this point. It can eventually slip so low that it'll barely run. It only takes a few minutes for someone who knows how to do it to check it and see if it's where it belongs. Not that it hurts to check the flow culprits yourself: how old is the fuel filter? The pre-filter screen in the fuel heater can also get pretty full of crap if it isn't popped out every now and then.

Seems pretty low fuel pressure wise. Overflow valve ok?

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I was kinda thinking the overflow valve too, especially if its the original.



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ofv all the way.

Yea I pinched the return line this morning and my pressure jumped to 30. It has a tork tech adjustable valve on it. The plug seemed extremely loose. I could turn it with my fingers.

I turned it down a little bit now getting 20 psi at idle. Only 25 at 2500rpm. Didn't seem to help the cutting out and white smoke. I'm going to order a new valve and if I can find someone to check my timing.

Any recommendations on the ofv I should get? Brand? Adjustable?

Truck still have a fuel heater?
I'd crank the fuel pressure on up and leave that ofv in place.
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[QUOTE=burnhedge;1058386]
I'm going to order a new valve and if I can find someone to check my timing.
QUOTE]

i will be in KS in about a month. you got tools? LOL

Don't crank the ofv to much ... You will damage the IP if the flow isn't enough to cool he pump ...