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Shon · 02-19-2011, 01:26 PM

with this ethanol fuel the injectors clog alot easier than they used to, to identify injector problems I lifted the fuel rail and turned it over like I was going to start it, this showed 4 bad injectors. I had used the noid lights and determined they were being told to fire but they were not firing.
Also, if the PCM is set up to run a MAF and O2s that all needs to be hooked up, if its set up for speed density do you have the IAT working? most of these have a 5 wire MAF so you either have to plug in MAF to get the IAT info or pull the wiring for it and wire in a seperate IAT (I use LT1 IATs from Adv Auto).
And we are assuming VATS has been turned off.

02-19-2011, 01:26 PM	#134
Shon Registered User Join Date: Sep 2005 Location: sc Posts: 1,203	Re: LS engine swap info with this ethanol fuel the injectors clog alot easier than they used to, to identify injector problems I lifted the fuel rail and turned it over like I was going to start it, this showed 4 bad injectors. I had used the noid lights and determined they were being told to fire but they were not firing. Also, if the PCM is set up to run a MAF and O2s that all needs to be hooked up, if its set up for speed density do you have the IAT working? most of these have a 5 wire MAF so you either have to plug in MAF to get the IAT info or pull the wiring for it and wire in a seperate IAT (I use LT1 IATs from Adv Auto). And we are assuming VATS has been turned off. __________________ 71 Cheyenne C10 LWB cam'd 6.0/T56 Swap Last edited by Shon; 02-19-2011 at 01:26 PM.