hard starting when warm

1959 CJ5 with F134 engine, Solex 34 carburetor...engine starts up immediately when cold, but if I turn the engine off and then start it back up anytime within the next 8 hours or so, it will take several attempts of cranking to get the engine started, regardless of pumping the accelerator, choke in or out, etc. Does this sound like a dirty carb or something else? The carb hasn't been cleaned since before I bought it (about 5 years ago).

Thanks!

 

As I am told, Solex has no choke. Maybe the enrichener circuit is f'ed up, giving too much fuel?

 

Usually 2-3 cranks of about 4-5 seconds each, and it will usually fire up on the third crank. I guess that's not too bad, but it used to start up on the first try regardless of engine temperature or time since it last run, and I thought it odd that it would start so easily when cold but not when warm. I've tried different combinations of priming the gas pedal or not, but it doesn't seem to affect starting (unless I do it too much and flood the engine of course).

 

6 or 12? Alternator or generator? Ignition: electronic or points and condenser?

 

Sounds like the carb is bleeding and flooding it when it is warm, maybe try holding it to the floor when it is hot? Just a thought.

 

12 volt, alternator, points and condenser.

That actually sounds most likely...I had noticed that it seemed to start a little faster if I held the gas down for 10-15 seconds prior to starting when hot. Is this something that a carb overhaul would fix, or is it just something these carburetors tend to do?

 

If it sits overnight or longer, it will fire right up the next morning. That reminds me, on the occasions when I turn the engine off and turn it right back on after just a couple minutes, such as at the gas station, it usually starts up pretty quickly. Maybe the engine hasn't had time to flood in that short amount of time?

 

Mine does that Glenn, it will start faster if I use the choke, but after sitting for a couple weeks, it's at my cabin, I like to let it crank so it builds up oil pressure before it starts. I really enjoy the conversation on this forum, so much to learn from all the people that are into old Jeeps.

 

You could always run a switch and wire to the coil and distributor so that is off while you crank the engine to build up oil pressure and then turn on the switch to energize the points and coil.

 

I thought about a kill button on the dash to hold for a minute and crank it over. Your idea sounds better, it could be an anti theft device as well.