Category Archives: Diesel Engine Troubleshooting Articles

What is a Spun Bearing?

A truly gut-wrenching thought is that when you suspect you have a spun bearing inside your engine. The worst part of this is that it’s not just exclusive to one type of engine, this can happen in a standard stock engine, race engine, gas engine or diesel engine. The occurrence of a spun bearing doesn’t mean…

P7100 Fuel Pump Modifications for the 8 Valve 4BT

4BT Engine History and Background The Cummins 4BT has mostly been utilized in applications such as box trucks, small industrial vehicles and agricultural equipment. The 4BT is pretty much just a downsized version of the famous 5.9L 12V Cummins as these engines share almost all of their parts such as pistons, connecting rods, injectors and…

If you cast your mind back to 1998 you may think of the Monica Lewinsky/Bill Clinton scandal, Good Will Hunting winning the best picture Oscar or the Denver Broncos winning the Super Bowl. It is also the year that Cummins began manufacturing their ever versatile ISC 8.3-liter engine. Based on the earlier mechanical 8.3 C-series…