I recently acquired a 1967 ford 3000 from a neighbor that hasnt been started for 5 years. The fuel tank was rusted bad, so that has been replaced. The original Holley carb bowl was packed full of zinc oxide and had pin holes in it after cleaning, that has been replaced with a Zenith from YTC and should fit a 3 cylinder ford. Everything except some of the wiring for the ignition system has been replaced. New cap, rotor, points, condenser, plugs, plug wires, coil. Vac advance seems to work. Points gap bench set at 25, plug gap at 25. Valves have been set to 17 intake and 21 exhaust and double checked several times. 125 compression in all 3 cylinders
Fuel pump had been checked and cleaned but seemed to be over pressuring the float needle and flooding the carb. That has been removed and now has a gravity feed with separator direct from the tank.
Now that I have all of that posted, this is what it is doing:
it starts easy and runs hot or cold at any throttle position without choke and sounds like a harley idling (poping out of the exhaust at all rpms). A fast change from the throttle seems to make it clean up and run smoother , but blows black smoke then misses again when the rpms stabilize. I have not checked timing due to not having a timing light (I pitched my old one about 5 years ago thinking I didnt need it anymore), but it cranks good. I eyeballed the timing to 3 deg when re installing the distributor after replacing the wire from the coil to the points. Adjusting the distributor from one end of the slot to the other doesnt seem to make much of a difference. I have played with the valve lash ( 1/4 turn loose and 1/8 tight) but that didnt seem to help. I am out of ideas.
Fuel pump had been checked and cleaned but seemed to be over pressuring the float needle and flooding the carb. That has been removed and now has a gravity feed with separator direct from the tank.
Now that I have all of that posted, this is what it is doing:
it starts easy and runs hot or cold at any throttle position without choke and sounds like a harley idling (poping out of the exhaust at all rpms). A fast change from the throttle seems to make it clean up and run smoother , but blows black smoke then misses again when the rpms stabilize. I have not checked timing due to not having a timing light (I pitched my old one about 5 years ago thinking I didnt need it anymore), but it cranks good. I eyeballed the timing to 3 deg when re installing the distributor after replacing the wire from the coil to the points. Adjusting the distributor from one end of the slot to the other doesnt seem to make much of a difference. I have played with the valve lash ( 1/4 turn loose and 1/8 tight) but that didnt seem to help. I am out of ideas.