05 GTO LS2 in race truck
02-08-2013, 12:26 AM
#1
Teching In
Thread Starter
Join Date: Mar 2010
Posts: 29
Likes: 0
Received 0 Likes
on
0 Posts
05 GTO LS2 in race truck i picked up a 2005 Pontiac GTO LS2 and put it in my off road race truck and i decided to make it carburated to keep it simple and less wiring..it has a edelbrock performer rpm intake and edelbrock 650 cfm off road carb and the msd timing control module, and custoim headers..i did the swap in january 2010 and have driven it and raced it a bunch since ..it has always been pretty hard to start but when it fires up it runs perfect and flawless and like a raped ape..well the truck has sat for a while and i just decided to get it going again so i drained fuel cell and replaced all the fuel lines and cleaned the carb/jets..it will not start it is backfiring and popping and sputtering..it has fuel pressure and the accelerator pump is working it is spraying fuel just fine and it has spark but it just wont fire up ..any help?????
02-15-2013, 11:59 AM
#3
TECH Regular
iTrader: (5)
Join Date: Jan 2008
Location: Sparta, Mo. in southwest Missouri
Posts: 452
Likes: 0
Received 2 Likes
on
2 Posts
If it is an '05 LS2 it should have a 24* tooth reluctor ring, and you should have the MSD 6010 box. You didn't say, but when you first built it you
would/should have lengthened the MSD cam sensor wires that were made for a rear mounted cam sensor so that they would reach the front mounted cam sensor on the LS2. You also have to switch the outside wires (labeled A and C) on the MSD plug. You can switch the wires when you lengthen them also, which is how I did it. The thing that confuses me is, you said this engine had been running. I know of at least 3 LS2 or Gen lV's that would not run and displayed the same symptoms as yours (backfires and flames), until they swithed the A and C wires on the cam sensor. If yours is a 58* tooth engine, then disregard everything I've written.
Ron
would/should have lengthened the MSD cam sensor wires that were made for a rear mounted cam sensor so that they would reach the front mounted cam sensor on the LS2. You also have to switch the outside wires (labeled A and C) on the MSD plug. You can switch the wires when you lengthen them also, which is how I did it. The thing that confuses me is, you said this engine had been running. I know of at least 3 LS2 or Gen lV's that would not run and displayed the same symptoms as yours (backfires and flames), until they swithed the A and C wires on the cam sensor. If yours is a 58* tooth engine, then disregard everything I've written.
Ron
02-18-2013, 03:28 PM
#6
