Drop in milage, where to look?
#1
Drop in milage, where to look?
OK, when I bought my truck last summer it was getting 24+MPG on the two lane roads running 65 and around 19-21 on the interstate. Now it is only getting around 17 at either speed. I changed the fuel filter and it didn't help, air filter is pretty new too.
My timing tools won't be in until next week and I'll be out of town so I cannot check the timing until I return from my trip.
What other stuff should I check out before I leave on my trip? I'd really like to get my milage back up to what I was getting to save some fuel as I'll be driving it about 2000 miles or more next week.
Ideas? I've been playing with it turned up some, could the soot have plugged the cataletic converter? I may straight pipe the CAT this week, been meaning to but just been waiting to put a full exhaust on it and just havn't had the money yet.
Thanks for any ideas or suggestions to get my milage back up.
George
Oh, one more thing, I've gotten as high as 24.6mpg with winter blend ULSD so I'm pretty sure it's not the fuel.
My timing tools won't be in until next week and I'll be out of town so I cannot check the timing until I return from my trip.
What other stuff should I check out before I leave on my trip? I'd really like to get my milage back up to what I was getting to save some fuel as I'll be driving it about 2000 miles or more next week.
Ideas? I've been playing with it turned up some, could the soot have plugged the cataletic converter? I may straight pipe the CAT this week, been meaning to but just been waiting to put a full exhaust on it and just havn't had the money yet.
Thanks for any ideas or suggestions to get my milage back up.
George
Oh, one more thing, I've gotten as high as 24.6mpg with winter blend ULSD so I'm pretty sure it's not the fuel.
#2
#3
I don't know if the '97s had a cat, but my '96 came with one. Try the simple things first like cleaning the pre-filter, and also reset the valves. You are also seeing a slight drop due to the refining process for ULSD. You can try adding a good quality fuel treatment or even a quart of two cycle oil with each tank full.
Tom
Tom
#4
I really don't think it is the fuel as the same fuel (ULSD w/ winter blend)from the same store has gotten me over 7mpg better than what I get now.
I'm not sure about the performance as I've changed so much lately it is hard to tell for sure what is happening.
Also, it does have a Cat, and I run 16oz of power service and 8oz of 2 stroke with every tank. Nothing has changed except my milage. I cleaned the prefilter screen when I changed the filter.
One more thing, while the valves may need to be checked, the last time I got over 24mpg was only 1,000 miles ago so I'm not sure if they would go out of spec so quick?
Anyway, don't think I'm not listening to advice as I am, just relaying extra info I may have left out earlier
Thanks,
George
#6