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Category Archives: Diesel Engine Troubleshooting Articles

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P7100 Fuel Pump Modifications for the 8 Valve 4BT

P7100 Fuel Pump Modifications for the 8 Valve 4BT
4BT Engine History and Background [caption id="attachment_11206" align="alignleft" width="224"] 4BT (3.9 L) 140 HP Engine[/caption] 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…
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ISC 8.3 Engine Specs and History

ISC 8.3 Engine Specs and History
[caption id="attachment_4001" align="alignleft" width="217"] Cummins ISC 8.3 L Engine, Originally Put into production: 1998. Image Courtsey of Cummins® Inc.[/caption] 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…
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CAT 3306 Engine Turbo and Aftercooler Problems

CAT 3306 Engine Turbo and Aftercooler Problems
[caption id="attachment_3801" align="alignleft" width="257"] CAT 3306 Surplus Engine Showcasing Top Mounted Turbo and Muffler[/caption] Continuing our series on CAT 3306 Air Inlet and Exhaust Problems, Part 2 of the series explores the Aftercooler and Turbocharger for air flow restriction issues. The CAT 3306 is built on simplistic old school mechanical engineering. There really aren't too…
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