I have a 96 Tahoe 5.7L Vortec. 148000 miles
Here is the deal
Hard starting when cold rough idle and SES Light
code p0300 (random misfire) and sometime p0350 (misfire #5)
Replaced the plug in 5 and no luck The new plug in 5 has a lot of carbon on it after a couple of days.
Plenty of power and pedal at higher RMP's
Any thoughts on narrowing this down??
thanks Rock Lobster