I just finished a ground up restoration of a 1943 GPW, and won a 1st place at a car show last weekend. I thought I would start with the good news, it starts good and idles good and I can increase the rpm with no load and it is smooth and will rev nicely. Once in a while I get a backfire when starting. But when I attempt to drive, it has NO power and basically I must drive in first and really ride the clutch to get going.
I rebuild the carburetor with a kit Ron had, and did not have a metering rod tool so I just set the little metering rod hex nut in the middle of the adjustment on the pump arm. I also rebuilt the fuel pump and the distributor. It has a new coil. I used the static method of setting the timing. It does not appear to have any positive effect when I advance or retard the timing. It might run a very little better with the choke on a little, but not enough to matter. I rebuilt the firewall fuel filter using the original element after I cleaned it. There are no obvious vacuum leaks. I can blow through the PVC valve in both directions? My carburetor rebuild kit had the base gasket with the metal V extending down into the intake manifold? To my eye, it has good spark. It has a new tank, with some paint over spray in it (I was hoping my fuel filter would remove it if any got in the gas). I have rebuilt everything so it is hard to think where to start? Somehow I think it is vacuum leak or lack of gas.
I have a 170 thermostat in it, and it is running at 190? So I think it is running a little hot, does not smell like unburnt gas from the exhaust.
TO SAVE EVERYONE FROM READING THE ENTIRE POST:
I ended up replacing the coil and distributor cap and adjusted the timing. I believe it was more timing than anything.
- Jeep 120610 Engine Compartment DSCN7956.jpg (154.91 KiB) Viewed 280 times
- Jeep 120610 Jeep Done Finally DSCN7959.jpg (169.16 KiB) Viewed 280 times
Last edited by 051743GPW
on Thu Jun 14, 2012 8:30 pm, edited 1 time in total.