Truck Oil Pan Leak: Gasket, Drain Plug or Something Else?
Oil pan leak on a truck? Tell gasket, drain plug and sensor leaks apart, what to check before a gasket swap and what to do if the pan is punctured.
Author: MPT Technical Team
Bad Oil Cooler Symptoms in Trucks vs Head Gasket Failure
Bad oil cooler symptoms in trucks: oil in the coolant, coolant in the oil, and the tests that separate an oil cooler leak from head gasket failure.
How Does Air Ride Suspension Work on a Semi Truck?
How does air ride suspension work on a semi truck? Air springs, leveling valves and ECAS explained, with failure symptoms, check order and part choice.
How Does a Turbo Work? Truck Turbo Failure and Boost Leaks
How does a turbo work on a truck? Bad turbo symptoms on a diesel, boost leaks and hose failure, likely causes, check order and part selection.
Semi Truck Transmission: How It Works and AMT vs Manual
Semi truck transmission explained: main box, splitter and range stages, AMT vs manual, shift control parts, and what to check when a truck won't shift.
Truck Air Dryer Purge Valve: How It Works and Common Faults
How a truck air dryer purge valve works, what the cartridge does, signs of failure, a step-by-step check and when to replace the cartridge or the unit.
Diesel Injection Pump Failure in Trucks: Symptoms and Causes
Diesel injection pump failure in trucks: symptoms, leak points, overflow valve and coupling faults, a supply-side check order and when to see a shop.
Bad Belt Tensioner Symptoms on a Semi Truck: What to Check
Bad belt tensioner symptoms on a semi truck: squeal, growl and arm shake, how to check the tensioner pulley and drive belt, and when to replace the unit.
Valve Lash Adjustment on Truck Diesel Engines: When and How
Valve lash adjustment on truck diesels: what it is, symptoms of a bad adjustment, check intervals, steps with a feeler gauge and engine brake differences.
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