Can a rotted fuel line cause low power?
This means the entire fuel line, tank to engine, is under suction YOU WONT SEE A LEAK , you might see a wet stain. I have had many rotted fuel lines sucking air causing stalls, no starts, low power etc. Look at the lines first.
How can I tell if I have too much fuel restriction?
1. Excessive fuel restriction, check or change fuel filter 2. Use vacuum gauge, check the suction, you should have no more than 5 inches Hg at WOT (wide open throttle) or 7-8 inches Hg under load. If you have too much suction, after changing the filter, the restriction could also be the sock in the tank.
How big is a LLY Duramax diesel tank?
LLY Duramax Specifications Chart Manufactured Years: 2004-2006 Valvetrain: Overhead Valve (OHV) 4 Valves per cylind Engine Oil Capacity: 10 Quarts With Filter Fuel: Diesel Fuel Tank Size: Short Beds: 26 Gallons Long Beds: 34 Gal
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.
How often should you change the oil on a LLY?
Change your LLY’s engine oil and filter at least once every 6 months and your fuel filters once a year. Keep an eye on your air filter and change it as needed. If you’re in very dusty areas you will likely need to change it sooner. 30,000-45,000 miles. if submerged in water. if submerged in water.
When to change filters on a Duramax truck?
If you tow mostly light loads or use the truck for mostly commuting, you should use the normal operating conditions service schedule. If you don’t hit the mileage requirements, check your owner’s manual for the specific time period in which you should change your fluids and filters.
How often should I service my 6.6L LLY Duramax?
How often you should service your 6.6L LLY Duramax is going to depend on how much you use it, and what you use it for. Excessive idling, heavy towing, or off-roading will result in the need to perform service more regularly. You should follow the severe service schedule.
What do I need to know about my LLY Duramax?
Here’s a little checklist of things you need to do check time your perform maintenance on your LLY Duramax. Check tires for signs of leaks, damage, dry rot, or uneven wear. Inspect All suspension and steering components for signs of play or torn boots/seals etc… Check your air filter to see if it needs to be changed.
Where does the fuel leak go on a Duramax?
Fuel leaks on a duramax are almost always on the return side of the system, the smaller of the two fuel lines traveling down the frame rail, going to the fuel cooler and back to the tank. They can leak at the cloth covered rubber return lines at the injectors, these lines can only be replaced in sets left and right side, they are expensive.
Why is my fuel primer pump not working?
Sometimes you will replace a fuel filter and will be unable to prime the system,you will pump the primer on the fuel manager (fancy G.M.term for filter housing) until youre dead. This is either because you are out of fuel, you have a rotted line or the primer pump is bad. G.M. sells a kit to repair the pump .
Is the Chevy Duramax LML diesel a failure?
While the failure is a well-known issue, it seems the occurrences are hit or miss, sometimes even sporadic.
What causes fuel starvation in a Duramax Diesel?
Fuel Starvation and/or Air in the Fuel Lines. The Duramax diesel is susceptible to fuel starvation and getting air in the fuel lines. This can be contributed to the fuel filter housing design and the fact that the Duramax does not use a lift pump. Rather, the high pressure fuel pump (injection pump) is responsible for vacuuming fuel from the tank.
Are there any problems with the Commons 6.6L Duramax Diesel?
Common Problems with the 6.6L Duramax Diesel. The 6.6L Duramax has been in production since 2001 and has proved, on a large scale, to be a relatively reliable and durable platform. While various versions of the engine have surfaced over the years, all generations of the Duramax are based on the same foundation.
How is fuel pressure measured on a Duramax LML?
This one stalled while driving, and will not build enough fuel pressure to be measured by the Fuel Pressure Sensor. The priming pump will build pressure, but the pressure quickly bleeds off. It pulls 2 inHg while cranking.