hard to start

[petert]

After sitting for many days, I have to pump the gas pedal 16,000 times before there is enough fuel to turn over the car. So maybe I exaggerate the number of times, but if I was in a hurry I'd be better off walking.
The carbs are webers. Recently tuned and runs like a champ. Just a lot of pumping before it wants to turn over.
Any suggestions? Besides walking of course.
Peter

 

[MMercury]

After sitting for many days, I have to pump the gas pedal 16,000 times before there is enough fuel to turn over the car. So maybe I exaggerate the number of times, but if I was in a hurry I'd be better off walking.
The carbs are webers. Recently tuned and runs like a champ. Just a lot of pumping before it wants to turn over.
Any suggestions? Besides walking of course.
Peter

After 16,000 pumps one might expect you to have drained any nearby gas stations.:wink: (Webers? Downdrafts? Sidedrafts? - not that it really matters.)

This is a common complaint with any carburetor-equipped engine that might be best addressed by looking at repair manual.

From top of my head: Is your problem fuel or ignition related? No fuel or too much fuel?

After vehicle has been sitting for a while and cold. Remove air filters and note whether the choke/s is/are functioning properly. Before doing anything, do chokes remain open (as they should after reaching normal operation temp). Hit throttle, do chokes both close? If not, you need to adjust them.

With filters off, check condition of your accelerator pump. (Hint: You can pump all day on old or cracked diaphragms without any results.) Look down carb throat at the accelerator pump nozzle. Activate throttle. You should see stream of fuel from nozzle. If you accelerator pumps are working and spewing fuel into the intake manifolds, chances are that even without a choke, your problem is ignition related as you are flooding the engine. Shouldn't be necessary, but pull plugs and see that they are wet with fuel. Time for a diagnostic tuneup?

You may still have fuel starvation issues despite properly adjusted chokes and functioning accelerator pumps. This could be due to any number of factors, including poorly adjusted carb floats, bad needle and seat, leaky fuel bowl/s, weak fuel pump, porous fuel lines, plugged fuel filter/s or - maybe you park too close to an active volcano and the heat causes premature fuel evaporation. This could void your warranty! :wink:

http://www.e9coupe.com/forum/showthread.php?t=7120

http://www.recarbco.com/technical/newtrouble.html#Cold_starting

http://www.webercarbsdirect.com/v/vspfiles/images/Weber%20Trouble%20Shooting%20Guide.pdf

Good luck.