I'm having a problem and need some help. Under hard acceleration - with or without a trailer, the truck goes from full power and black smoke to almost stalling, back fires, and blows white smoke out the exhaust. Getting off and back on the throttle returns the power. I'm running a Smarty on lvl 3 98%, Quad boost fooler, 90 hp injectors, and walbro pump.

Any thoughts?

 

when was the last time you changed your fuel filter?

 

Betting on the fuel filter too.

If that isn't the culprit I'd say your next step is checking to see if your lift pump is on its way out.

I run a Walbro as well, but I've heard they're not as durable as some of the others. Mine, so far, has worked flawlessly and I hope it continues to do so.

Do you have a fuel pressure gauge?

 

yeah, your running out of fuel somewhere along the line...

 

hmmm is that walbro good for that kind of power? or bad fuel filter. what does your fp gauge say at wot?

 

I changed the filter within the last 6,000 miles. I have a pressure gauge on it but it's in the engine compartment. Prior to the walbro, I could get it to 3-4 psi. Now I'm running about 19 psi at idle.

 

matt off the subject how do you like that stage 3 garret? thanks

 

It appears I'm having an issue with the fuel getting to my filter housing. I only see 11 psi at idle when it should be higher. I'm going to change the filter before the walbro first and see if that makes a big difference. It's getting worse the more I drive it.