How to install a Duramax LB7 fuel injector?

LB7 Duramax Injectors Parts Part # & Link Fuel Injectors Bosch 0445120008 Dieselogic LB7 Injector Injector Installation Kit Merchant Automotive LB7 Duramax Injector Injector Puller Tool OTC 6778 Fuel Injector Line Kit MA-10215

Are there any problems with the LB7 Duramax?

The most notorious LB7 Duramax problem is their original injectors. Even GM acknowledged their problems when they corrected the original injector design and issued a 200,000 or 7-year warranty on the updated model. That doesn’t mean the LB7 Duramax you own has this problem corrected though.

What are the common problems with 6.6L Duramax?

9 Common 6.6L LB7 Duramax Problems. 1 1. LB7 Duramax Injectors. The most notorious LB7 Duramax problem is their original injectors. Even GM acknowledged their problems when they corrected 2 2. Lack Of A Fuel Lift Pump. 3 3. Fuel Filter Housing O-Ring Leaks. 4 4. Water Pump Failures. 5 5. Overheating.

What kind of fuel injector do I need for my Duramax LB7?

The Bostech DE01351 Platinum Series Remanufactured Fuel Injector is a step up from the Silver Series Injectors for your 2001-2004 GM 6.6L Duramax LB7. Like all Bostech Remanufactured Injectors, each unit is 100% disassembled, inspected, polished, and certified to OE specs with all mating surfaces lapped to a precision finish.

Where are the injector return lines on a LB7?

Injector return lines are under the valve cover on LB7 engines. Pressurize the return circuit with the valve covers off and look for bubbles or vacuum test the return circuit off of each head, the return should hold 15 inches Hg of vacuum. Oregon Fuel Injection

Is the air intake on the LB7 Duramax too restrictive?

The factory air intake on the LB7 Duramax is nothing to boast about. It’s restrictive, and it’s basic design can actual hinder performance more than it helps. Many LB7 Duramax trucks experience higher intake air temperatures because hot air is being pulled from the engine bay. The stock filter is also too restrictive.

Which is the worst engine for fuel injector problems?

Click to expand… The LB7’s (2001-2004.5) were definitely the worst for injector problems. Running fuel from a good supplier seems to help, as well as running quality fuel filters and changing them regularly.

What happens when you have bad injectors in a Duramax?

You’ll also experience loss of power, excessive smoke, rough idling, and engine misfiring. Here are common issues experienced when you have bad injectors. Fuel in Oil. Check Dipstick look for a surplus of oil or even smell the dipstick. When fuel is present, you can often smell it.

What kind of fuel injector does a Duramax 6.6L use?

Restore performance in your 2001-2004 GM 6.6L Duramax LB7 with the Bostech DE651 Silver Series Remanufactured Fuel Injector. Bostech Silver Series LB7 Fuel Injectors are 100% disassembled, then each component is inspected, polished, and certified to original specifications.

How big is the harness on a Duramax injector?

Injector wiring harness bracket: 80 inch-lbs. Injector terminal connectors: 18 inch-lbs. Upper valve-cover bolts: 71 inch-lbs.

What do I need to install NW fuel injector?

NW Fuel offers injector lines (also called jump tubes), installation gaskets, seals, and o-rings, glow plugs, fuel pressure regulators, return line banjo bolts, and many other complementary parts for this truck. *NOTE* Injector installation torque is critical to injector life and performance.

How big is the bolt for the fuel injector?

Fuel Injector fuel pipe bracket bolt: 15 lb-ft. *NOTE* Injector installation torque is critical to injector life and performance. Ensure the injector bore and injector seat are SPOTLESSLY CLEAN before installing. Debris/carbon can prevent injectors from sealing correctly which can create leaks or poor running complaints.

Is there any way to fix a Duramax LB7 injector?

Check Dipstick look for a surplus of oil or even smell the dipstick. When fuel is present, you can often smell it. Unfortunately, there is no good way to fix the factory LB7 Duramax injectors other than replacement. When you’ve found a faulty injector, it needs to be replaced and unfortunately, it isn’t cheap.