- May 24, 2010
I agree... 8 seems very low. I measured an unsteady 14 on mine and still had the problem shifting into drive. Good reminder to plug the vac adv when adjusting the timing... Any update from the OP?Since we don’t know your whole set up, and you said you were low on power, Are you checking the timing with vac adv plugged? 8 is a little low especially on a modified engine( intake,headers & carb). I recommend running full manifold vac adv if your emissions exempt. I’m @20* idle on my Camaro with advance hooked up and mechanical adv limited for vortec heads, to give you an idea. A vac gauge is very useful tool and tell a lot on engine state of tune, you should be pulling around 17-19” (stockish cam) steady at idle, if not it could point to potential vac leaks, does all of your heating/cooling controls work?how about your evap canister valve? Even the vac advance can or vac modulator can leak. To eliminate the choke from troubleshooting, cold start the car on flat ground and let it run until the choke is visibly fully opened without throttle input and then see if it dies, if so your not dealing with a choke issue.