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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: medually on January 16, 2009, 10:32:30 pm

Title: missing under load...454
Post by: medually on January 16, 2009, 10:32:30 pm

Hi Guys

Would anyone have any suggestions for my 7.4l TBI Silverado Auto.....was running spot on new iridium plugs etc but is now developed a fairly bad miss under load at lower revs but tends to get better at higher revs....I will be converting to a dedicated LPG Gas Research system so dont want to start replacing everything to suit regular fuel I run 95 or 98 octane. This is a US import 1988 C3500
Any suggestions would be greatly appreciated

Title: Re: missing under load...454
Post by: VileZambonie on January 16, 2009, 10:34:18 pm

Import to where? Check your wires, cap, rotor, and plugs again.