Got Smoke?
1/2 ton status
Ok so I was performing a tune up of sorts on my 79 this weekend. I purchased new plugs (ac delco), 8mm Auto Zone house brand wires, a vaccum advance, and a Mr. Gasket recurve kit.
Truck was running fine before I started I was just hoping to improve efficency a little....it seemed to be liking the gas a little to much lately.
I replaced the vaccum advance with just a stock replacement. I found out that mine wouldn't hold vaccum on a pump the other day when trying to find total advanced timing.
Next I installed the kit from Mr. G and everything was still moving freely even though the new bushings for the weights were a little snug. I used the black springs in the kit as they had the lowest and widest curve according to the graph and my motor does not see high RPM's. I then replaced each plug and wire one at a time to ensure no crossed wires.
I took the truck out on a test run and if just giving enough throttle to ease down the road its fine, but if you give it a lot of throttle try and accelerate quickly it feels almost like your holding the brake and pressing the gas at the same time? It will power on through whatever is holding it back...but it takes A LOT of throttle to do so enough for me to know somethings wrong. After coming back and finding the vaccum advance unhooked
I took it out for another test run, same effect. I tried swapping the lowest curve springs for the the middle of the three sets of springs...still no change.
The basic timing is set at 6* since I have a small 268 Competition Cam, it idles fine and you can even free rev it fine but once you start trying to drive its evident. Can someone point me in the right direction? Hoping I don't have to replace this distributor, the stock parts I pulled out were junk and not reuseable even if it did run ok.
Truck was running fine before I started I was just hoping to improve efficency a little....it seemed to be liking the gas a little to much lately.
I replaced the vaccum advance with just a stock replacement. I found out that mine wouldn't hold vaccum on a pump the other day when trying to find total advanced timing.
Next I installed the kit from Mr. G and everything was still moving freely even though the new bushings for the weights were a little snug. I used the black springs in the kit as they had the lowest and widest curve according to the graph and my motor does not see high RPM's. I then replaced each plug and wire one at a time to ensure no crossed wires.
I took the truck out on a test run and if just giving enough throttle to ease down the road its fine, but if you give it a lot of throttle try and accelerate quickly it feels almost like your holding the brake and pressing the gas at the same time? It will power on through whatever is holding it back...but it takes A LOT of throttle to do so enough for me to know somethings wrong. After coming back and finding the vaccum advance unhooked
I took it out for another test run, same effect. I tried swapping the lowest curve springs for the the middle of the three sets of springs...still no change.The basic timing is set at 6* since I have a small 268 Competition Cam, it idles fine and you can even free rev it fine but once you start trying to drive its evident. Can someone point me in the right direction? Hoping I don't have to replace this distributor, the stock parts I pulled out were junk and not reuseable even if it did run ok.
