Valve float STS
02-26-2005, 09:20 PM
#1
Valve float STS
I have an 04 silverado with a 5.3, sts turbo, 43lb injectors,255 walbro, 5lbs of boost and only rev's to 5000 in first and about 4500 in second?? after checking everything we could think of the tech's now think it is valve float?? The truck now has 6000 miles on it and 5000 when the turbo was installed. Anybody else ever had or heard of this problem with a stock engine?? Allen Nelson tune that appears to be right on.
02-26-2005, 09:21 PM
#2
TECH Enthusiast
iTrader: (1)
Join Date: Mar 2003
Location: fresno, ca
Posts: 613
Likes: 0
Received 0 Likes
on
0 Posts
sounds more like a fuel delivery problem to me (fuel filter?) i don't think you are having valve problems.. The other thing i have seen is problems with spark like spark blow.. but it sounds like ignition or fuel to me. Also is boost dropping off at all?
02-26-2005, 09:26 PM
#3
Originally Posted by rcfast
sounds more like a fuel delivery problem to me (fuel filter?) i don't think you are having valve problems.. The other thing i have seen is problems with spark like spark blow.. but it sounds like ignition or fuel to me
02-26-2005, 09:28 PM
#4
TECH Enthusiast
iTrader: (1)
Join Date: Mar 2003
Location: fresno, ca
Posts: 613
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by hotrod04
The tech's at Xtreme checked it with laptop ect. said fuel is ok. It is the returnless fuel system and no replaceable filter as it is in the module. Blew the fuel lines out from the motor to the tank with tank removed and nothing.
02-26-2005, 09:43 PM
#5
Originally Posted by rcfast
oops didn't catch the 04 part... Valve float is a possibility, what kind of noise does it make. Does it just fall flat on its face? does it keep climing?
