Common questions

What causes engine knock on Duramax 6600 V8?

What causes engine knock on Duramax 6600 V8?

UPDATE Issue found. $106 in diagnostics and it is the #7 injector i just replaced, Its faulty. The knock goes away when they increase power demand on the injector at idle.

What should the idle knock sound be on a Duramax Diesel?

The sound is often more pronounced in the interior of the truck as it’s amplified by the transmission bell housing. Idle the engine at about 600 RPM with the transmission in Park or Neutral. The engine oil temperature should be 113–185°F (45–85°C). Turn the HVAC fan and radio off. Remove the accessory drive auxiliary belt.

Which is the last cylinder on a Duramax 6.6 Dramax?

May sound stupid, but can someone tell me which cylinder on a 6.6 Duramax is no. 7 I am looking at the engine form the radiator and I know its on the left, but is it the last one on the left or the second onefrom the rear on the left. I have dtc 207 and 2146 and am going to try the ice pick fix but need to know which cylinder to work on

What happens when a Duramax engine goes down?

Not only does this mean game-over for the engine, but it results in a truck that’s down for weeks (if not months) and a huge chunk of change missing from your wallet. The failure is most common in higher horsepower engines, but can still occur in moderately modified and even stock power plants.

UPDATE Issue found. $106 in diagnostics and it is the #7 injector i just replaced, Its faulty. The knock goes away when they increase power demand on the injector at idle.

May sound stupid, but can someone tell me which cylinder on a 6.6 Duramax is no. 7 I am looking at the engine form the radiator and I know its on the left, but is it the last one on the left or the second onefrom the rear on the left. I have dtc 207 and 2146 and am going to try the ice pick fix but need to know which cylinder to work on

What causes white smoke in a GM 6.6L Duramax engine?

A common issue with the GM 6.6L LB7 Duramax engine is white smoke at idle. Worn and damaged injectors are often the cause however there are other causes and considerations that should be looked at prior to injector replacement. INJECTORS STUCK OPEN OR WITH EXCESSIVELY LEAKING NOZZLES DIANOSIS 1.

When did the LLY Duramax go to 6 speed?

It was mated to a 5-speed Allison Transmission in years 2004 and 2005. In 2006, the Allison Transmission was upgraded to a 6 speed. Although our LLY Duramax specifications chart above does mention the turbocharger found on these trucks, it doesn’t mention the fact that these are one of the largest turbochargers found on any Duramax today.

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Ruth Doyle