Lousy after hot start

[Michael O.]

I'm having trouble diagnosing why my '58 runs great until I turn it off, then restart when warm. After second start it stalls and runs really rough.

I've run through the following:

• Wired open the heat riser
• new radiator (now running about 180)
• rebuilt carbs (it's a 2X4s 270)
• Tune-up
• electronic ignition
• New coil

I'm truly at wits end. Does anyone have any suggestions?

[Roy B.]

Re: Lousy after hot start

Might be the floats are set to high and when warm the gas Increases causing floading , pull the two side screws to see no gas pouring out.

[Michael O.]

Re: Lousy after hot start

Thanks Roy. I'll check it those floats.

Reading some other thread, I think I'm also going to replace the solenoid & voltage regulator.

....looking forward to driving it with confidence again. Thanks.

[Bill I.]

Re: Lousy after hot start

Mike, the sol and VR have nothing to do with the rough idle. You said the car will start, look to a fuel perc issue or as stated float level. Bill.

[Joel T.]

Re: Lousy after hot start

Thanks Roy. I'll check it those floats.

Reading some other thread, I think I'm also going to replace the solenoid & voltage regulator.

....looking forward to driving it with confidence again. Thanks.

Mike,

Do you need to push the gas pedal to the floor to get it going at a warn start? If so, it is flooded...

I had a 2x4 set up a while back, it was a '61 245 car.. Had problems in this space as well but more so.. You might also check fuel line pressure upon shut off. As I recall, those WCFBs do not deal with with pressure which is not within spec...

Have fun!

Joel

[Clem Z.]

Re: Lousy after hot start

take the fuel pump apart and drill a .015,15 thousands, hole thru the valve body so the pressure between the carbs and the fuel pump can bleed back to the pump input side stopping the carb flooding. this will not hurt the fuel pressure with the engine running. we did this back in the 60s as this was a problem even back then. this will work for any carb if you have a take apart fuel pump

[Michael O.]

Re: Lousy after hot start

Yes, I do need to pump the gas pedal for the hot start, so it probably is flooded. I'll lower the chokes this weekend. If that doesn't work I'll try the fuel pressure fixes. I'll post back the results. Thanks for the help.

[Joel T.]

Re: Lousy after hot start

Mike;

You should not need to "pump" the pedal when the engine is warm... If you just turn the key, without touching the pedal, it should start... If you do that and it just cranks without firing then try holding the pedal half way down (no pumping) while cranking... If it is very flooded, holding the pedal flat to the floor (no pumping) will permit more air to get in and will get it to fire... after a few seconds.. If there is too much gas in there, pumping it only makes the problem worse!!

If you can diagnose the issue this way you will have a good idea what the issue is.

Have fun,

Joel