fuel problem??????

[bubtheman]

I could use some advice. I have a 99 F350 with the six speed. Between 1000 and 1500 rpm's the motor shudders really bad. I'm thinking bad fuel, but other people have told me to have the computer reset. I have changed the filter twice in 1000 miles...the second time I don't think I needed to. I'm at a loss and worried that I'll damage something if I don't do something soon. Clogged injectors, bad fuel, computer, freakin' gremlins, I have no idea! Any and all help is appreciated. Thanks.

 

[Ford_Forgotton]

Have you hoked a scanner up to it yet? Pulled codes?

It could be a bad wiring harness under the valve cover, could be a lot of things. Could be a bad fuel pump and not the filter. Any mods? Chips?

 

[1stimer]

hey bubtheman you need to make a signature. And use that book of your and pull the codes and filter the jet fuel next time

 

[bubtheman]

thanks, and no codes pulled yet thats next on the todo list(no mods no chip)

 

[bubtheman]

Well here's the deal.... finally got someone that knew what's going on to have a look. he didn't pull codes or drive it. started it up rand about two mins and said i got a dead cylinder. . i'm fixin to pull the injectors have em cleaned and checked. check all the wiring and go ahead and stuff new glow plugs in while i'm there. oh well

 

[Ford_Forgotton]

Well, that dead cylinder could be as simple as the wiring harness being screwed up under the valve cover. Its pretty common.

A cylinder contribution test or injector buzz test might be able to tell you more.

I'd hate to see someone throw a buncha money at a problem that could be as simple as unplugging and replugging the valve cover harness.

But, this is also a good opportunity to replace the GP's, replace the harness, and maybe step into some bigger injectors.

Guess its all in how you look at it.

 

[jvencius]

But, this is also a good opportunity to replace the GP's, replace the harness, and maybe step into some bigger injectors.

Guess its all in how you look at it.

Yep--that's true--the whole "while you're at it" philosophy of maintenance gets awfully damned expensive at times.

 

[1stimer]

hey bub
check out this link right here

 

[bubtheman]

Yeah, any suggestions about which injectors are best and if you got a link that would be cool. high flow or what? maybe stock is good i don't know.

 

[Mike]

Check with our sponsor @ Beans Diesel Performance. Ryan can set you up with what you need for injectors. His link is in our sponsors section. You wont be disappointed.

 

[bubtheman]

thanks stroker i'll check that out