Why is my duramax getting bad fuel mileage?

5 MPG over 25 miles (8 I got that while drafting an oversize load doing 10 under on the freeway. Jun 19, 2012 · Bad fuel mileage after injector swap. Advertisement Have you noticed the wave of cars w. Since I bought this truck in 2004, it was no problem to get 21 MPH highway and 15 in town. Advertisement Good fuel economy isn't considered an afterthought when it comes to. 7 liter Cummin’s engine; however, trucks that feature the motor see an approximate 14 miles per gallon. Dec 23, 2009 · 94 posts · Joined 2009 i have been letting mine idle in the mornings to warm up a little and i just hand calculated my milage at 9. This is why your fuel mileage has gotten so poor. The worse it gets the more eye burning the exhuast will get. I had a full tank when I left the house and started driving to work, I get about halfway here and realize I am down to less then 3/4 of a tank. Oct 19, 2022 · Dave Brabec. It seemed that the fuel mileage really varied for the first couple of months depending on where I purchased fuel (probably due to the switchover from Winter blend to Summer blend. Planning a road trip can be an exciting adventure, but it’s essential to consider the cost of fuel. Wrestling with a case of your Duramax getting bad fuel mileage can feel like pulling teeth without Novocain—it’s painful, frustrating, and you feel like you’re getting nowhere. Reset your trip odometer or record the mileage on your master odometer. poor fuel mileage My 2006 LBZ with 256000 all stock its a work truck starts right up cold or hot strong smell unburnt fuel. com, symptoms of a bad knock sensor include poor acceleration, knocking noises during acceleration, poor fuel mileage and a visible check engine light Common problems with Duramax diesel engines include air in the fuel lines, fuel starvation, water pump failure, overheating, injector failure and harness chafing When it comes to managing a business, one of the key factors that can significantly impact expenses is the mileage between locations. So i am getting horrible fuel mileage on my 2006 Duramax and im not sure why. The only thing that has changed, is maybe the sulfur has been removed from the diesel. Clogged fuel filters can lower fuel pressure, making the engine run inefficiently. This is my first post, not sure if I'm in the right place. In today’s world, where environmental consciousness is on the rise and fuel prices continue to fluctuate, finding an SUV that offers both good gas mileage and a spacious interior m. Nov 5, 2020 · Reason for the question is I’m looking at possibly getting rid of my 1500 for a Duramax. Mileage before was about 9 around town, it now dropped even more to about 8. Jun 19, 2012 · Bad fuel mileage after injector swap. The rest of the time I get about 19 unloaded on the freeway running a steady 70, and 16. Record how much gas it took to refill. Crew cab 4WD 3500 HD dually trucks, unsurprisingly, fare. An engine oil analysis may help diagnose car problems. "Big Red" 2008 Chevy Silverado 2500HD Ext Cab Long Box, 262k miles (GONE) GMC Duramax 3. His 06 LBZ CCSB is going through an incredible amount of fuel. Learn how towing and gas mileage will affect your next cross-country trip. Advertisement Good fuel economy isn't considered an afterthought when it comes to. Also, keep the radiator clear of any blockages and obstructions. When it comes to choosing a new car, one of the most important factors to consider is fuel efficiency. Power has increased, and the truck idles and runs strong. Aug 27, 2015 · Aug 27, 2015 Hi Everyone I have a 2008 LMM Duramax and Allison fitted to my Nissan Patrol. 5 MPG over 25 miles (8 I got that while drafting an oversize load doing 10 under on the freeway. 6L L5P with 1200 total miles. The truck Regens WAY more often when you do warmups like this. Thermostats sticking open and running in the 160-170 range, can kill mileage 2-3 MPG. Jan 31, 2022 · This is completely unacceptable because the gas model gets better mileage then mine how do I know that? My friend has the same exact truck and it’s the gas. If you have some mileage on it, check for boost leaks using a smoke tester. Bad oxygen sensors and air filters can reduce gas mileage by as much as 20%! It's a must to help keep oxygen sensors with a proper mix of air and fuel so they can perform optimally. Want to know how to calculate fuel cost? Visit HowStuffWorks to learn how to calculate fuel cost. Highway fuel economy usually beats out city mileage across the board. We will see if I get any better then the 13. com Subscribe to my new YouTube cha. Jul 24, 2023 · Duramax engines are renowned for their power, reliability, and fuel efficiency. On the duramax you have to run a performance test to try and get an idea of which injector it is that is over contributing. From delivery services to sales representative. Base single-cab 2WD Duramax 1500 models average in the low 20 mpg range on the highway but can dip into the high teens in more congested driving. Advertisement Good fuel economy isn't considered an afterthought when it comes to. The truck Regens WAY more often when you do warmups like this. When planning a trip or calculating fuel costs, it’s essential to know the mileage between two locations. Jan 14, 2015 · I have an 07. Apr 7, 2022 · 2022 l5p Fuel Mileage. Verify with a scan tool or monitor. My 06 LBZ extended cab long bed is only getting around 15 mpg, it's been tuned and straight piped but hasn't been deleted, it has 265/75/16 tires, and has 325,000 miles on it what could I do to improve fuel mileage? Explore causes and solutions to your Duramax getting bad fuel mileage. 5 crew cab 4x4 and all of a sudden my mileage has dropped. Unloaded on the highway he cant get 200 miles out of a full tank!!. 5 on my 10 mile country road and 6 stop light commute to work. When it comes to choosing a new car, one of the most important factors to consider is fuel efficiency. Aug 14, 2020 · 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. i thought my 2000 silverado with a 5. Nov 5, 2020 · Reason for the question is I’m looking at possibly getting rid of my 1500 for a Duramax. With rising gas prices and growing concerns about the environment, finding a. I am new to the forum but I have read many of your discussions. can some one help,here is what i know can someone shed some light on my fuel loss drive around 16 miles used a 1/4 tank 35 gallon tanks also changed out cyl 2 with a used one and bal rate is 2 Here are 12 reasons why your Duramax is getting bad fuel mileage Incorrect Tire Pressure and Worn Tire Tread. 5 on my 10 mile country road and 6 stop light commute to work. My 02 pulling the same trailer and load averaged 11-14, empty it would do around 17-18. Apr 28, 2021 · As fuel prices look like they're going to hit $4 per gallon leading into the summer of 2021, any upgrades you can make to your Cummins, Powerstroke, or Duramax to increase fuel economy will be of benefit. 2 different body styles, but planning on going with a Denali. Jul 4, 2013 · 10 minute warmups KILL MY fuel mileage by almost 2mpg per tank. 8 and today I checked and it was 13 I just replaced the fuel filter 3 weeks ago and did an oil. A worn out or faulty regulat. Real life mileage for 3 As I stated before,I'm getting a new 2020 Sierra 1500 4x4 crew cab loaded with a 3 I have seen GM fuel stats of 22 mph Hyw. Regularly check the thermostat and the lines of the cooling system. But, Virgin Atlantic, Boeing and emissions recycling co. The IRS just released the 2022 standard mileage rate, and it comes with some Increases. Just as an experiment - fill your truck with fuel from the Mac's Milk in Essex. 5 MPG over 25 miles (8 I got that while drafting an oversize load doing 10 under on the freeway. So i am getting horrible fuel mileage on my 2006 Duramax and im not sure why. pamaco inc I have not been getting very good fuel mileage, around 9-11mpg, around town and 15-16mpg on the highway. I have been reading alot about the LLY and constantly am seeing much better mileage being posted by others 17-20 mpg. They don't know the company recommended tire pressure. As consumers become more conscious of their carbon footprint and fuel expenses, there has been a growing demand for SUVs with better mileage. THERE HAVE been many things said about social media, good and bad. The engine had 35,000 miles on the clock when I fitted it and I have done about 28,000 miles since. In recent years, SUVs have become a popular choice among drivers who desire both versatility and space. Improving your fuel economy has many benefits including saving you money, here is how to get better gas mileage next time you fill up your tank. For the past 6 months or so, my 2004 Chevy Duramax crewcab long bed has dropped from 20/21 MPG to 17/18 highway. 08 lmm cc/sb built trans atp efi Save Share Like Sort by Oldest first trevorb_06 1439 posts. com, symptoms of a bad knock sensor include poor acceleration, knocking noises during acceleration, poor fuel mileage and a visible check engine light Common problems with Duramax diesel engines include air in the fuel lines, fuel starvation, water pump failure, overheating, injector failure and harness chafing When it comes to managing a business, one of the key factors that can significantly impact expenses is the mileage between locations. The truck does have a 12' service body on it and weighs in at around 10,000lbs verified by the scale Oil and filter is new. 5 MPG over 25 miles (8 I got that while drafting an oversize load doing 10 under on the freeway. The ecoboost mpg will be better commuting. With rising gas prices and growing concerns about the environment, finding a. i thought my 2000 silverado with a 5. 2 different body styles, but planning on going with a Denali. Tires aren't helping but it should still be better. 2 with about 25% of those miles loaded with a camper and atv trailer. See our guide for your options! We may be compensated when you click on product. craigslist duluth mn pets This is why your fuel mileage has gotten so poor. 8 and today I checked and it was 13 I just replaced the fuel filter 3 weeks ago and did an oil. The truck does have a 12' service body on it and weighs in at around 10,000lbs verified by the scale Oil and filter is new. The truck burned somewhere around 8-10 gallons of fuel. Recently my fuel mileage has been drastically decreasing. In recent years, SUVs have become a popular choice among drivers who desire both versatility and space. Dude, that’s definitely the lift and tires I have 35s and average around 11 Was able to squeeze 13 out of it on a long 800 mile drive down i5. My best 400 mile record is 22. Mar 11, 2011 · 288 posts · Joined 2010 ^x2 I checked my flow rates last month, inj 1-4 were between 45 mm and 5-8 were between 3 After a little research I guess they r gonna need to be replaced soon. 6 Duramax engine, here are some valuable tips that you can follow: Maintain proper tire pressure: Keeping your tires inflated to the recommended pressure levels can significantly enhance fuel efficiency. Aug 27, 2015 · Aug 27, 2015 Hi Everyone I have a 2008 LMM Duramax and Allison fitted to my Nissan Patrol. 08 lmm cc/sb built trans atp efi Save Share Like Sort by Oldest first trevorb_06 1439 posts. While the bad fuel mileage is what it is (I understand it's a truck), I'd prefer it be in the 15-18 range if possible. Fill your tank all the way. I find that hard to believe that they'd have that much of an impact on fuel mileage, but this is my first diesel and I'm a little ignorant on how oversized tires correlate with lower fuel mileage. 8 and today I checked and it was 13 I just replaced the fuel filter 3 weeks ago and did an oil. I was getting about 18miles/gal and it has suddenly dropped to about 11miles/gal Truck seems to go as well as normal - every now and then it throws a. I now own a 2021 GMC 2500HD AT4 with about 5K miles on it so far and to me is getting terrible mileage. When it comes to purchasing a new car, fuel efficiency is a top consideration for many consumers. Underinflated tires increase rolling resistance, reducing fuel economy. In town, I was averaging between 16-17 mpg. '24 2500HD AT4 '15 2500HD Silverado (sold) SaveShare. Fuel Filter is new, the Fuel pressure regulator is new as well. Most of the drives are short in-town trips but there are some highway driving, but when I look at instant MPG it only shows 15-16. fairy tattoo Mileage before was about 9 around town, it now dropped even more to about 8. If you are not up in the area of 200°, you may want to check on that. Oct 19, 2022 · Dave Brabec. A little disappointed, but understand why. We will see if I get any better then the 13. Since I bought this truck in 2004, it was no problem to get 21 MPH highway and 15 in town. Are leveling kits bad for trucks? We explain whether using a leveling kit will damage your truck, plus answer other questions so you know before installing. Drive in Economic/2WD Mode6 Duramax is equipped with 2WD and 4WD options. I’m in desperate need of help. 2 with about 25% of those miles loaded with a camper and atv trailer. Have you figured out what’s causing poor fuel mileage? Dec 8, 2021 · FLAT TIRE said: I get only 19 to 20 mpg while towing, I really doubt this. Tires aren't helping but it should still be better. Is it possible to increase the fuel economy of your Duramax truck using aftermarket Duramax parts? New diesel trucks are getting more expensive, so it makes sense that owners are trying to keep their older rigs on the road longer and get good gas mileage at the same time. 5 lmm and I was getting between 17-18 mpg since I bought the truck last September with 102,000. I was getting about 18miles/gal and it has suddenly dropped to about 11miles/gal Truck seems to go as well as normal - every now and then it throws a. Full disclosure, I'm in Alaska and the temps have been hovering around zero consistently, but even with using Diesel #1 up here, I still. I have put 900 miles on it and the best fuel economy I have achieved is still below 25 mpg on the highway. You also can cap off one injector at a time and run the engine until you find the one that stops the hazing. 9 Cummins getting the exact same fuel mileage you’re getting and I’m wondering the same thing. Improving your fuel economy has many benefits including saving you money, here is how to get better gas mileage next time you fill up your tank. A guide to maximizing Japan Airline's Mileage Bank program for flights on the carrier as well as partner awards with Oneworld airlines and more. com Subscribe to my new YouTube cha.