replaced external fuel pump on 2003 3500 4x4 dually truck will crank and idle but runs out of fuel when you rev truck up. you can prime fuel system and will crank again but does same thing when you rev truck up. can anyone help me with this?

 

I assume yer talkin bout the lift pump

sorry to see you go thru all this, the OEM lift pumps are crappy and need to be upgraded with after market like Airdog or Fass, there is also a belt drive unit out there called MITUSA that is great

 

Is this something that should be replaced before the OEM fails or is it safe to wait until it goes out.

 

yes i'm talking about the lift pump. i wondered if i put a aftermarket hi pressure pump between the fuel tank and new lift pump would that fix my problem.

 

only want 8-10 psi of lift pressure as I understand it from PPE. I have FASS, works great. OEM went out and caused trouble. Yup on the side of the road. Get a pressure gauge, install it. Watch it..

 

When you get your engine started, adjust the timing , and then shut the engine off . After you will find that, now, it won't start... It is because the cam is far enough out of time that there is no compression when the spark fires. It's not going to start. When compression does occur, the spark just isn't there at the right time.

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Dump trucks | 4x4 trucks

 

Its a diesel. Get your head on straight and go to a gas forum. Spark... Yeah, Right.. Newbie

 

Now that was funny

 

Umm...maybe he was trying to make a joke, cause a gas vehicle ain't welcome in these parts