I have a 1971 FJ40. It’s starts fine when it’s cold. Once I run it And it warms up and stop, it’s doesn’t start easily. (2 Viewers)

[Javadca20]

Once my FJ40 has been run and warms up and then I stop somewhere. It takes a while hell of a lot of cranking the starter to get it going again. What could that be? Anyone have anything similar happen?

 

[adaharsh37]

Are you holding the pedal to the floor when you attempt to restart after it's warm ?

 

[Javadca20]

Are you holding the pedal to the floor when you attempt to restart after it's warm ?

Ive tried holding the pedal in and pulling the choke. Nothing really helps. Eventually it starts after a long time of cranking

 

[adaharsh37]

I can't speak to using the choke when warm but I personally hold it to the floor and crank until she fires up. Just DON'T pump the pedal was the advice I was given.

 

[stoshzack]

My first guess on a rig that starts fine cold, but not warm is intake/exhaust leaks. The gasket is fine when cold, but expands and leaks when warm. Spraying carb cleaner around intake/exhaust manifold gasket when it is warm should do the trick. You can hear the engine idle go up if the cleaner gets sucked in. Checks for leaks around the carb too. Also, you can do a vacuum test to confirm.

 

[thebigredrocker]

On the hot start remember no choke and pedal pinned to the floor. You want max airflow.

How do the spark plugs look? When you pull the plugs keep track of which cylinder they came from. Can you see fuel in the sight glass?

Pictures always seem draw more interest and can speed up the remote trouble shooting process.

Background info can also provide clues:
Did you just get this rig? Has any work recently been performed on it?
Has the fuel system been completely gone through or have you only replaced the fuel filter? Blah, Blah, Blah

 

[Splangy]

As stated above, hot starts should be with pedal to floor (without pumping) and no choke.