What would causes a Duramax to lose prime?
A common problem with high-mileage 2001-2010 Duramax trucks is that the fuel filter head assembly begins to develop air leaks. With age as well as use of ULSD and bio-diesel fuels, the O-rings in the filter head assembly can begin to allow air to bleed into the system, causing the fuel system to loose its prime.
How do you diagnose a bad injector on a Duramax?
Symptoms of Failing Duramax Fuel Injectors
- Excessive Smoke.
- Power Loss.
- Rough Idle.
- Fuel in Oil.
- High Return Fuel.
- No Start.
How do you reset a Duramax after running out of fuel?
Turn the ignition key on for two minutes. The fuel pump will be operating and starting the priming process. Do not start the engine during the first two minutes. After completing the initial prime in step 2, turn the ignition off, then back to start and crank the engine for 15 seconds.
How do I know if I need diesel injectors?
Here are the 5 most common symptoms of faulty diesel fuel injectors.
- Trouble starting the vehicle or uneven idling. The engine cranks but doesn’t start unless you crank it for a long time.
- Misfire.
- Smell of fuel.
- Dirty emissions.
- Increased fuel consumption and poor miles per gallon.
How much does it cost to put injectors in a Duramax?
How much does it cost to replace injectors on LB7? The total cost to have a mechanic replace 8 injectors on an LB7 Duramax can range from $4000 – $5000 CAD, depending on what other work is performed at the same time.
What to do if you run out of diesel?
Prime the fuel system by turning the ignition on (Run position) for 30 seconds, but do not start the engine. This allows the pump to prime the system. Turn the ignition off, and then crank it for 15 seconds. If it does not start, repeat the first task and this one until it starts (cycle the key).
How to check no fuel condition on GM 4.3L?
I’ve also included how to check a no fuel condition with starting fluid (although this is not the most effective way to test the fuel pump). It’s been my experience that misdiagnosing a bad fuel pump is a common occurrence on the 4.3L, 5.0L, 5.7L GM vehicles with the ‘Spider’ fuel injector assembly.
How much does it cost to diagnose a GMC fuel leak?
The cost of diagnosing the P0093 GMC code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour. Engine Light ON (or Service Engine Soon Warning Light) The Powertrain Control Module ( PCM) monitors the fuel system.
How to check high pressure pump in GMC diesel?
Buy Fuel Pressure Regulator 2 Unplug the fuel pressure regulator 2 (pressure control valve in left hand rail) electrical connector. Crank the engine for 15 seconds and verify there is a steady flow of fuel from the fitting on the rail. If there is not, proceed to checking/replacing the high pressure pump.
What to do if your fuel gauge is bad?
Fuel gauge troubleshooting begins with isolating the problem either to the gauge, sending unit, fuse or wiring. The most common gauge problems are either a bad ground at the tank, or a sender problem. As with any electrical troubleshooting, it is best to check the fuse and all wiring connections are clean, tight and free of corrosion.