|
Re: 4.3 vortec
oper8tor, sounds like a distributor gear problem, I think the gear itself is about $30, the vehicle will run great until you get to light load cruise- say 45 mph on a slight downhill angle when the timing will really advance. Have your diagnostics guy check the cam retard on the scanner, if it's out of spec on the negative side, I'd start by checking the distributor gear
|