Join Date: Jun 2006
Location: Baltimore, MD
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I'm leaning toward the fuel pump being inadequate.
I only changed it as a precautionary measure. Last week I had a clogged fuel filter that stalled the truck. I changed the fuel filter, and the truck ran fine. Or at least it started up and drove again. No biggie.
But I noticed it felt a bit sluggish. It just didn't have the "oomph" my truck had before.
The truck has a Banks full 4" exhast, K+N, aftermarket wastegate, etc...and who knows what other goodies. In healthy trim, it makes a lot of power, lots more than stock and is actually scary fast. My VW GTI would have a hard time outrunning my truck when it's happy.
This leads me to believe the $167 special CarQuest pump simply isn't adequate. I noticed that even at idle I can hear it straining. When the truck isn't too hot, it'll run fine. But after about twenty minutes of beating on it, it just seems to start flagging. I've also noticed that at low RPMs my torque really feels solid, but at the upper RPM ranges it seems to be tailing off--and that sounds like fuel starvation to me.
When the truck is cool, it'll start and idle like a champ, and then power progressively falls off.
With the aftermarket goodies, you have to figure I'm making a good bit more power than stock. Sounds like I need a better pump. When you change only one thing and the problem crops up...kinda leads me in that direction.
I've got no check engine light, no oil in my coolant, no coolant in my oil, no smoke from the tailpipe, a clean filter, a freshly cleaned tank, and 15 gallons of fresh from the pump fuel from a very busy gas station.
The noisy fuel pump is definitely making me think it's time for an emergency trip to the parts store...:censord: