Apr 10, 2009 #1 F fishfarm4 New member Apr 10, 2009 2 0 1 94 gmc jimmy vortec 6cyl. has rough idle , i changed plugs,oil,air filter and fuel filter , i cant see sparks at night on plug wires , im lost ,,,
94 gmc jimmy vortec 6cyl. has rough idle , i changed plugs,oil,air filter and fuel filter , i cant see sparks at night on plug wires , im lost ,,,