What causes a Duramax crankcase to leak fuel?

What causes a Duramax crankcase to leak fuel?

The ball seat can deteriorate over time, resulting in an incomplete seal, and ultimately, injector leaking. Both of these issues result in fuel leaking from the injector which can then enter the crankcase. This can lead to more serious problems, as diesel fuel doesn’t offer the same lubrication properties as oil.

What to do if your Duramax crankshaft is weak?

The ultimate fix for the weak factory crankshaft is to replace it with a stronger unit that’s been internally balanced. The billet Callies crankshaft available through Wagler Competition Products is machined from triple heat treated 4330V steel and features reduced rod journal widths for improved strength (which calls for narrower rods).

Can a bad crankcase vent filter cause an oil leak?

Oil leaks Oil leaks are one of the symptoms most commonly associated with a bad crankcase vent filter. The crankcase filter simply filters the blow by gases to make sure that they are clean before they are rerouted back into the vehicle’s intake manifold.

How to fix an intake manifold gasket leak?

Method 1: 1 Start your car and then let it idle on the position. 2 Spray the carb cleaner (what you think works well) at the joint of the intake manifold with the engine. 3 Try to hear car’s idling closely. If you hearing your car engine dies or idle fast, then there is an air leak at the join you sprayed before sometime.

Are there any concerns about the aluminum cylinder heads on the Duramax?

The truth of the matter is that there are no concerns regarding the aluminum cylinder heads on any generation of the 6.6L Duramax. With over 1,000,000 Duramax engines on the road today, the aluminum cylinder head design has yet to be identified (with any credibility) as an inherent problem for Duramax owners.

Are there any problems with the Duramax diesel engine?

Overheating issues with the Duramax diesel seems to be a hit-or-miss problem; some owners experience it, while others never will. Regardless, it’s more common with the Duramax than other engines.

What causes a Duramax injection pump to fail?

As a result (allegedly), the lack of lubrication in the fuel can cause a premature failure of the injection pump, to a point where it won’t allow the LML Duramax to run. You can be driving down the road and everything seems normal, and when the pump fails, the truck just shuts off.