Re: Cummins 4bt hard to start when hot ????


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Posted by Paul (in NY) [108.162.219.208] on Sunday, January 24, 2016 at 13:46:44 :

In Reply to: Cummins 4bt hard to start when hot ???? posted by Bruce in BC [162.158.104.5] on Saturday, January 23, 2016 at 22:27:18 :

Are the Injectors original or did you put in new or rebuilts ?

I am thinking.....you may have some injectors that are dripping, not closing off fully. This will cause a flooding condition. When you start the cold engine, the injectors have quit dripping/flooding, and the engine is clear, and you get a good normal start. Shut down a warm engine and an immediate restart, the injectors have not yet had time to drip a lot and flood. Shut down a hot engine, injections lines are up to pressure, let her sit as you mention, and in that time the injectors have dripped a lot of fuel into the combustion chambers.

I would have a injection shop run a pop off test on the 4 injectors and see if they are operating correctly and at the right pressures. I am having a problem wrapping my arms around any KSB involvement with the problem as you describe ??

Keep us posted

Paul



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