Quote Originally Posted by jackaroo View Post
Pretty sure it was made by caterpillar- it's their heui fuel system- hydraulically actuated electronically controlled unit injectors.

I'm getting low engine temps, so low that tech 2 won't even start the diagnosis. The mechanic suspects it's caused by faulty injectors due to rough idle too. They can't repair them so may have to replace.

The injector sleeve O-ring is available here and can be changed if damaged when removing injector.
gd day! my fuel mixes with my oil. what should i do with my 4jx1? what shop or auto supply can i buy the injector o-ring sleeve if this is indeed the problem? what is the procedure in fixing this problem?

thank you!