Is the water pump on the LB7 Duramax leaking?

Water Pumps – Another issue with the LB7 Duramax is the water pump leaking. This one is fairly common and unfortunately a huge pain in the butt to change. Water will seep from the underside of the pump. Be prepared though because you will have to remove the dampner pulley to get the pump off.

Why is my Duramax diesel engine not working?

The trucks computer keeps track of how much fuel needs to be added or subtracted from each individual cylinder to make the engine run smoothly, and this value is called the balance rate. If one cylinder is contributing too much or not as much as the rest, the cause is usually a bad injector and the cure is a replacement.

What to do about a Duramax 6.6 LB7 engine?

If you are having a problem with your 2001-2004 Duramax 6.6 LB7 diesel engine, please feel free to give us a call. We carry a full line of repair and performance parts for these engines that we install in our shop on a regular basis. Odds are we have run across your problem before and would be glad to help. Call us at 1-877-367-9351.

What to do if your Duramax cooler goes bad?

Lastly we replace a fair amount of glow plug controllers as well. You will usually get a diagnostic trouble code for the cooler when they go bad. Head Gaskets – As these truck reach the 100,000-150,000 miles we are seeing more and more head gasket issues. The Duramax has a multi-layer steel head gasket.

Are there any problems with my 2003 Duramax?

Thaks for the help. injectors,water pump,headgaskets,injectors again,instrument cluster,steering shaft,pinion seal,and injectors again. I have on 03 with 66,000 on it and know problems. Friend of mine has 03 asmost same truck and know problems with 145,000 on it. Sure love mine. P:S Injectors should be warrantied to 200,000.

How long can a Duramax go out of service?

This special policy covers the condition described above for a period of 7 years or 200,000 miles (320,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. The repairs will be made at no charge to the customer.

What causes a fuel filter to leak on a Duramax?

Fuel Filter Housing Oring Leaks – The Duramax fuel system does not have any sort of low pressure fuel pump pushing fuel to the engine from the tank. The injection pump sucks all the fuel from the tank.

Are there any issues with the Duramax fuel pump?

The new injectors available from us and others are updated and do not have the cracking issue. Fuel Filter Housing Oring Leaks – The Duramax fuel system does not have any sort of low pressure fuel pump pushing fuel to the engine from the tank.

Where does the coolant go in a Duramax Diesel?

This is with the rear aluminum plate off, so that the engine can be bolted to engine stand. Those two orange O-rings in the rear of the block are coolant passages, and merge into the oil cooler (part of the oil filter housing).

What happens to the head gasket on a Duramax?

Head Gaskets – As these truck reach the 100,000-150,000 miles we are seeing more and more head gasket issues. The Duramax has a multi-layer steel head gasket. When they have issues, they do not typically smoke out the exhaust or get coolant into the cylinders. What happens is the head lifts a little during the compression stroke.

Can you replace an injector on a LB7 truck?

Injector replacement on the LB7 truck is rather labor intensive and just changing one is usually not worth the risk for the labor costs. The new injectors available from us and others are updated and do not have the cracking issue.

What are the injector lines and seals on a Duramax LB7?

Reseal the Injectors in your 2001-2004 GM 6.6L Duramax LB7 with the Bostech ISK118 Injector Seal Kit. Bostech gaskets and seals are manufactured from top quality materials that meet or exceed OE specifications for factory-like performance and service life. Features: Sold Individually 13 Month Unlimited Mileage Warranty

When to replace gaskets on GM Duramax LB7?

The Dorman 904-103 Fuel Rail Return Line Gaskets are a direct replacement for your 2001-2004 gM 6.6L Duramax LB7. Dormans Fuel Injection Return Line and Gasket protect against leaks that could cause fuel pressure to drop, preventing possible engine damage. These gaskets should be replaced any time the fuel injectors are serviced.

What kind of head gasket does a Duramax have?

The Duramax has a multi-layer steel head gasket. When they have issues, they do not typically smoke out the exhaust or get coolant into the cylinders. What happens is the head lifts a little during the compression stroke.

Why is my GMC Turbo downpipe clamp leaking?

GM’s first bulletin was to service as above. Later there was a redesign change downpipe and pipe joint. Yours is new enough to have the newer downpipe and clamp — but it could still be loose/misaligned. You might try loosening, realigning and reclamping before replacing the injector.

Is the water pump on the LB7 Duramax leaking?