You may have a bigger problem - is it a legit Weber carb? If it's a 'licensed copy' (read as 'bad knock-off) you will never get this thing to run right. Tips on installing a Weber carb - used a high volume, low pressure electric pump (don't try to regulate the mechanical factory pump as it will eventually kill it) and ensure it's a genuine unit. Plug the coolant port under the carb to eliminate possible coolant bypass issues as well.Originally Posted by pacheco2189
pacheco2189,
Have you tried starting it after a shot of starting fluid down the carb throat? If it starts and runs for a moment, that reduces the chance the problem is electrical. There may be air in the fuel lines that the fuel pump can't overcome at cranking speed. A couple of starting fluid starts might be enough to get fuel flowing properly if that's the problem. I used to have a Weber and I had to use starting fluid to get the truck running if it sat for more than 3-4 days.
So I tried keeping the choke plate open and it still cranks but does not start. I know I still need to fix the psi problem but does that mean the floating is not the problem? Could it be electrical and if so.. what?
Carb cleaner is flammable but it still might be too wet. Get a starting fluid which is extremely combustible (ethyl-ether). Spray a shot of it into the carb and see if it starts and runs 2-3 seconds. If it still won’t start, remove the plugs. Note if the plugs are very wet or fouled. Dry, clean and gap each plug. Check that each plug is getting current and fires with a bright arc. If the plugs spark as expected, install the plugs and wires. Double check the plug wires at the cap to be sure the firing order is correct. If you didn’t remove or move the distributor earlier and everything checks out fine to this point, try another shot of starting fluid. Then crank it over with the throttle open slightly. It should start and run for a few seconds.
Reply With Quote
Bookmarks