Is it timing or something else
Asked by Joemoller77 Aug 05, 2016 at 12:34 AM about the 2003 GMC Sierra 1500 Work Truck Standard Cab LB
Question type: Maintenance & Repair
Hi i change my oil and filter, my fuel pump and fuel filter, i also change my rotor distributor cab
wires and spark plugs on a gmc sierra v6 4.3l yr 2003. Now my truck shakes a lil and when i
step on the gas pedal it feels like shocking. Plus when connecting timing gun i dont get flash
from it. Can any body help me out
6 Answers
Check ur spark plug wires to make sure u have the right firing order
Joemoller77 answered 8 years ago
I did already i even put the old spark plugs and wire to see if that was the problem i double check the gap and they are fine and on the firing order i have the speks of it. I dont know what wlse to do
If the timing is right, sparkplugs and wiring then chec to see if U might've accidentally disconnected a sensor plug or vacuum hose
Joemoller77 answered 8 years ago
I did check all that and i have spark on cilynder 1 i made my timing gun work allready but now everytime i step into gas pedal check engine light flashes but truck doest shake no more. All this is on a park mode i havent switch gear on it
Joemoller77 answered 8 years ago
I did check all that and i have spark on cilynder 1 i made my timing gun work allready but now everytime i step into gas pedal check engine light flashes but truck doest shake no more. All this is on a park mode i havent switch gear on it
Joemoller77 answered 8 years ago
I think i found the issue my cousing tied the distributor cab to hard and the screw from the inside was loose. Thanx cousin for adding more bills lol
