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BBC · 02-07-2007, 07:32 PM

There has been no chk eng lit since the plugs were changed. That stopped all "rough" running. The engine does run sluggish. With all the reading i have been doing, it has raised my concerns about the caty convtr. The has been a strange rattling comming from underneath that sounds like sheet metal. Could there be damage to the converter from the heavy fuel mix. Or maybe it just failed from age? Could this be causing my problem. Does the caty convtr feed back into the computer? Sorry for the abbrevs. I guess you find out your spelling skill when posting.

02-07-2007, 07:32 PM	#5
BBC Registered User Join Date: Feb 2007 Location: Mobile, AL Posts: 3	Re: 1995 Gmc K1500 Runs Rich, Please Help... There has been no chk eng lit since the plugs were changed. That stopped all "rough" running. The engine does run sluggish. With all the reading i have been doing, it has raised my concerns about the caty convtr. The has been a strange rattling comming from underneath that sounds like sheet metal. Could there be damage to the converter from the heavy fuel mix. Or maybe it just failed from age? Could this be causing my problem. Does the caty convtr feed back into the computer? Sorry for the abbrevs. I guess you find out your spelling skill when posting.