I have tried everything, and I can't seem to get this bug worked out.
I have been having timing trouble. First off point's are all gaped to specs, and firing order is just fine, all cylinders are firing.
I am using a mallory dual point on a cleveland 2 barrel. I have been running it without my vacuum advance because it wont run steady it. I have thought it was a vacuum leak but I have sprayed 10 gallons of wd 40, checked all the lines, and I can't spot one. I even wd40'ed aall the under the car to the modulator valve. Nada.
Without the advance it runs nice , but it wont rev past 3k. When I hook up my vacuum hose it idles like at 1400 from 600 timing goes from about 12 degrees to 26 and just falls on its face on the road.I have tried every possible timing combination.
My guess is that my hose going to the vacuum thing on the distributor is coming from the wrong location. I have tried the single port in the front of the manifold(they dont have these on windsors), and also from a slot in the carb. They both do the same thing. Maybe I should go from the vacuum tree in the back of the manifold?? Should I run it fromn the tree to the carb then to the vacuum advance?? Im out of Ideas. Has anybody had this problem? I didnt think hooking a vacuum hose to the advance should change idle speed and timing at idle. I did plug tube when stting timing. Thanks, hope I was clear. Josh.
And I will send you a dollar if you fix it