CK5
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1999 chevy 2500 getting bad gas milage
- Thread starter twoslo4five0
- Start date
i havnt had a chance to get the truck on a nice scanner yet..it will prolly be next week thanks for all the help though
well some conclusions after almost 700 mile round trip
going up,trailer and my truck
i got 7 mpg all the way 3 tanks
that left me 1/2 a tank so i burned it up and got 10 mpg then
i refiled and think i got around 14..not real sure cause i went 180 miles on a half tank but i think its around 14
once i get the timing straight hopefully it will be alot better
going up,trailer and my truck
i got 7 mpg all the way 3 tanks
that left me 1/2 a tank so i burned it up and got 10 mpg then
i refiled and think i got around 14..not real sure cause i went 180 miles on a half tank but i think its around 14
once i get the timing straight hopefully it will be alot better
I'm sure you can improve things but don't expect too much... if you're getting 12+ in a truck like this be happy
i want it to be better under towing conditions since this truck is used primarly for towing...i would LOVE to get 10 towing
I really feel like I'm raining on your parade in this thread but I seriously doubt you'll get 10mpg towing a fullsize truck with that setup...
I just towed my k10 (full bodied still) with some tools and misc. stuff on a 20' wood deck tandem axle trailer and I was getting 8 the whole time.
I've researched this ever since I got this truck and it seems like the best bang for the buck on these vortecs is intake/exhaust and a good tune (give justin at blackbear a call)... the MAF sensors and stuff like throttle body spacers work too but not as great of a bang for your buck...
I just towed my k10 (full bodied still) with some tools and misc. stuff on a 20' wood deck tandem axle trailer and I was getting 8 the whole time.
I've researched this ever since I got this truck and it seems like the best bang for the buck on these vortecs is intake/exhaust and a good tune (give justin at blackbear a call)... the MAF sensors and stuff like throttle body spacers work too but not as great of a bang for your buck...
but your towing with a 454 right??i know plenty of people towing with a 6.0 getting 11
You're jumping generations though... BIG difference between the old 5.7 and 7.4L vortecs and the "new" 5.3 and 6.0L...
One of my boss' drives a 2500hd with the 6.0L... peppy little sucker btw... it loves to be wound up and pulls hard 3,000+ where as my 7.4L is only happy in the 2,000-3,000rpm range...
One of my boss' drives a 2500hd with the 6.0L... peppy little sucker btw... it loves to be wound up and pulls hard 3,000+ where as my 7.4L is only happy in the 2,000-3,000rpm range...
i think its more than possible to get 10mpg out of a 5.7 vortec because my ex g/fs dad was getting 12 pulling a 30 foot camper behind a sub...its definitley possible for a 5.7 but not a 7.4
im still driving around on gas from yesterday i have a 25 gallon tank and a 1/4 tank left and ive driven 300 miles so far on 3/4 of a tank
i ordered i distributer today..it was a 150 bucks...hopefully this will fix my problems..after i get theese problems fixed im gonna get it tuned and get the tm system problem fixed...
new dist is in..no ses light anymore and it has more power.it actually spun a tire.im going on a trip this weekend (not towing) and ill report back what kind of milage i got.next up is a tune and some aditives
the teeth were worn but i didnt want to get it out and it be a cam sensor (in the dist) or the gear...both had to be ordered and was gonna be about the same price to get both as a whole new dist.nothing wrong with new parts
after 800 miles i got around 12.5 to almost 14 in the truck...hopefully after some aditives and tuning i can get another mile or 2
averaged the mid 13s over 800 miles of diving...next up is some aditives from 4by4god and then a tune session..hopeing to get to 15
