Caterpillar 3116 Marine Engine Problems

The 3116 had lots of early problems soft blocks head injector problems.

Caterpillar 3116 marine engine problems.

Any cat 3116 3126 or c7 are good engines. I ve rebuilt a bunch of the 3116 and 3126 engines. Cat do not like to be idle. If the engine is equipped with a freon compressor air conditioner the belt for the fan drive the alternator and the accessories will have an automatic belt tensioner.

One still running with 650 hours will probably last awhile longer. 3116 why we hate it. When you have hundreds of thousands engines on market you always will find hundreds of people who complain about. Make sure you get a complete cat history on the motors.

It is extremely hard to time the fuel system and like the vw on the automotive side working on the cat 3116 requires special tooling you can only buy from caterpillar. Most of problems are due to misuse or poor maintenance. Adjustment alternator belt illustration 16 g00285332 1 adjusting bolt. You can help the adept ape channel for free.

If the engine is not equipped with a freon compressor the alternator is used to adjust the belt tension. It s not that we hate the cat 3116 it s that we hate the fact that it s hard to work on. Make sure you use anti seize on all bolts especially the front cover. It was a good engine.

And get a cat survey. This is why not good for bucket trucks driven by pto. They also changed the high pressure oil line design a few times also leaked.