Not holding fuel in Carb?

[DaveMarcotte]

Hey Weekend drives only. First start always hard. Lots of cranks before she fires. After that no problem. Im thinking the 34LDF carb reservoir isn't holding fuel or is there a check valve on the line that's not working? Any advise appreciated.

[daved]

Think this is a fairly common problem, you will probably find other posts about it here. I tried adding a check valve, didn't help at all. Also tried changing the accelerator pump, fairly easy & inexpensive. That might have helped just a bit. I replaced all the 5/16" rubber hose with metric hose & new clamps. That did make a big difference but didn't totally fix the problem.

[Nanonevol]

If my 77 with 34 ADF sits for a long time I prime it with a shot of starter fluid to save my starter motor.

[spiderdan]

Sounds normal to me Dave. At least my "guy" says so when I asked him years ago. I thought I needed a check valve somewhere. He figures the gas evaporates in the bowl after a few days. I live with it.

[Nut124]

Electronic fuel pump in the trunk, check valve and a pressure regulator will solve the problem. Bypass the mech pump. No return line needed with the regulator.

[Warren]

This is a common problem even after replacing the check valve. My solution was to add the electric fuel pump in the trunk with a switch under the dash; used only to prime the carb. Will start up immediately and now have a backup to the mechanical fuel pump.