loss of power. lots of smoke.

[isaacucv]

My '08 has developed a problem. It idles like normal, but there is a lack of power and a lot of black smoke at high RPM. When I got home I put it in neutral and revved it up. It is smoking black then blue and running very rough. What would cause that? I replaced the fuel filter in the fall and have had no problems. The air filter was late last summer. Any suggestions are appreciated. Thank you

 

[det rebel]

sounds like fuelpump timing is off somehow

 

[det rebel]

but it could be many things hard to tell from the computer

 

[Ken_86gt]

How is the oil level, and does the oil look normal?

 

[det rebel]

ken what you think the problem is could be headgasket ? or are you thanking worse

 

[jrobinson5093]

check a boost tube. sounds like your loosing boost one cupler may have ruptured. the ford I work on blow them off from time to time.

 

[det rebel]

ford boots are the worst thing ever made theres no telling how many times i have had to pull over and put them back on lol

 

[isaacucv]

Thanks for the quick replies. I just did a bit of looking around. The idle is a little low and rough. The oil was low, I added some but there was no sign of coolant on the stick. The smoke is mostly blueish like unburned fuel. The lift pump on the passenger side of the block is wet, and smells like diesel. Could that be the problem? It had been hard to start the past few days, requiring a lot of cranking.

 

[isaacucv]

Side note, once it is warm, it starts immediately.

 

[det rebel]

yea sounds like your sucking in air somewhere in your fuel system

 

[isaacucv]

check a boost tube. sounds like your loosing boost one cupler may have ruptured. the ford I work on blow them off from time to time.

Can you elaborate? I don't know what a boost tube is.

 

[Ken_86gt]

There isn't a boost tube- no turbos on these trucks...

A leaky lift pump is an issue that could show symptoms of hard starting, I don't think that it is causing the smoke issue though.

 

[Ken_86gt]

I suggest that you start following the trouble shooting procedures in the TM- it is a very good tool.

 

[Stonepicker1]

Sounds like a bad injector(injector is dumping to much fuel) I've had the same thing happen to me. Replaced all the injectors with new ones and it fixed the problem.

 

[isaacucv]

Sounds like a bad injector(injector is dumping to much fuel) I've had the same thing happen to me. Replaced all the injectors with new ones and it fixed the problem.

Yea it kind of seems that way, but I have smoke coming out both tail pipes. So the problem has to be before the injectors. I think ?

 

[jrobinson5093]

I never mind when you said 08 for some odd reason I thought you ment the year.

 

[doghead]

I never mind when you said 08 for some odd reason I thought you ment the year.

That's why this is called the CUCV forum, not the FORD forum...

 

[isaacucv]

Does it make sense that if the lift pump is bad, the fuel isn't getting emulsified properly at the injectors? That would explain why its acting like it has bad injectors on both bank?