View Single Post
Old 03-11-2007, 01:15 AM   #1
Rudyfastcat
AF Newbie
 
Join Date: Oct 2005
Location: San Antonio, Texas
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Cool New Chevy 4.3L Has Misfire --Please Help--

opcorn: I have a 1992 Chevy C1500 with a 4.3L TBI and 5 speed manual trans. .
I just recently had a new(rebuilt) 4.3 installed and now I have this mystery misfire .
When I picked-up my truck from my mechanic and noticed the miss & he told me to give the engine 500-700 miles (break-in) . Well here it is 2 weeks & 715 miles later and nothing has changed and I will be taking my truck back for that after break-in check up .
Does anyone have any first hand experience with this type of problem and is there maybe something else I missed ?(maybe valve adjustment is needed?)
FYI - Over the past 2 weeks I have replaced the plugs, wires, engine oil+ filter, cap & coil . I also rebuilt the TBI (includes replacing fuel pressure regulator, TPI sensor & brand new TBI injectors) and still no change . I have also checked all grounds and all is good.

Last edited by Rudyfastcat; 03-12-2007 at 01:00 AM.
Rudyfastcat is offline   Reply With Quote