So was having some issues starting hot but yesterday it started to sputter when given gas. It will smooth out on light pedal but when given gas it's a sputter/hesistation.

THen at low speeds I got a little back fire shifting down gears.


Is it a carb issue? If so, ideas?

not good at all on carbs.

 

Definitely sounds like a carbon issue. Maybe the accelerator pump issue. Just rebuild it. Carbs are easy to rebuild even if you don't know how. Just get a clean work space and a new carb rebuild kit and follow the directions.
Rebut kits are usually about $25

 

Check your vacuum line to the distributor. SOunds like the Vacuum advance is not advancing the spark when you let off the gas, so it is way retarded.

 

Okay, I will give those both a try.

Thanks
Don

 

Okay, I started with the Vacuum advance since it's not on the carb, path pf least....

I was not able to get any vacuum to accumulate when pumping with the manual vacuum pump. I get the initial vacuum but when I go to pump again the vacuum that applied already is gone that fast. I assume it should not leak air back in and vac should accumulate, yes? So I have to see if I can just get a new diaphragm for the distributor then see where I am at.
Then I still need to test after that I am getting vacuum from the hose from the carb.

Thanks and will post back

 

Well, my Mallory unilite is one that I can't get a replacement Vac Adv Canister for it. So I spend smaller money to buy one to just get a vac adv. or I buy something else. MSD is over $400 any thoughts on what to get from like 200 - 300?

 

I did not buy a new distributor, I took part the Vac Adv. Canister and patched the diaphragm while I figure out what I want to do.

All is back and working much better outside timing I have to do as well as a carb adj.


Thanks
DOn

 

did you use that liquid rubber they have on TV? The one that makes a screen door into a boat? Or, a tire tube repair kit?