What kind of fuel injection does a Caterpillar 3126 use?
CAT used a new fuel injection system called HEUI to allow computer control of the injectors. A HEUI injection system (also found on Ford Power Strokes, as well as other engines) uses a second oil pump to boost oil pressures to 1500+ PSI (I don’t know the maximum) and essentially use the high pressure oil as hydraulic fluid.
Why does the cat 3126 have a bad rap?
Why does the CAT 3126 have a bad rap? The 3126 is based on an earlier engine (3116), it appears that earlier engine had some bad problems and this started it out on a bad foot.
How does the HEUI work on a Caterpillar 3126 engine?
A HEUI injection system (also found on Ford Power Strokes, as well as other engines) uses a second oil pump to boost oil pressures to 1500+ PSI (I don’t know the maximum) and essentially use the high pressure oil as hydraulic fluid. And the computer would control the high pressure oil which then controlled the injectors.
What happens when a Caterpillar engine is worn out?
Instead they are machined in the block. In a wet sleeve engine, with the engine still in a vehicle you can press the cylinders (sleeves) out of the block and press new ones in to replace a worn out cylinder. This means that when the engine is worn out, if you want to rebuild it, you pretty much HAVE to remove it from the vehicle.
Is there an injector pump on a cat 3116?
the 3116 does not have an injector pump.just a governor/fuel pump.the injectors themselves are opened/closed by the camshaft. That must be why you have to adjust the fuel rate from under the valve cover, in the rack. yup and many special tools are needed to do it. I got a 3 & a 10 pound hammer, and vice grips!
Why is my cat 3126B engine not running?
Codes 34, 15, 18, and 39 will cause your 3126B engine NOT to run. The most common cause of the 3126B engine not to run due to codes 18 and 39 is the IAPCV. Or Injection Actuation Pressure Control Valve. This valve is located on the HEUI pump. It’s where the 2 wire connector hooks to the pump.
What is fuel solenoid on Caterpillar 3116 diesel engine?
Troubleshooting the Caterpillar Fuel System (1) Found the fuel solenoid on the The diagram and assembly instructions in the manual were no help and. The Cat diesel engine comes with a electric fuel shutdown solenoid which is controlled by the key switch.