Mpg is way down
- Thread starter chris142
- Start date
mines been on the decline in chip truck for a while now.last time i checked timing it was fluctuating instead of steady and the other day she started stumbling and the timing advance came on,on it's own when warm.the ip is getting worn out.was one of the budget deals from the past uhaul truck sell out.time for a good one and i bet the economy shoots back up.
if yours is running smooth with no white smoke it may be more of an ip issue than injectors too........but you really can't beat doing both for a full tune up.
im seeing too many 12 and 13 mpg's and i know she should be 14-15 mpg.
well look at my graph;
http://ecomodder.com/forum/em-fuel-log.php?vehicleid=5088
down,down,down hill.iv put it off far too long.
if yours is running smooth with no white smoke it may be more of an ip issue than injectors too........but you really can't beat doing both for a full tune up.
im seeing too many 12 and 13 mpg's and i know she should be 14-15 mpg.
well look at my graph;
http://ecomodder.com/forum/em-fuel-log.php?vehicleid=5088
down,down,down hill.iv put it off far too long.
Oh. Im seeing more black smoke even with a new air filter.this last tank included hauling quads up a mountain which worked it pretty hard but for only 20 minutes or so.the rest was flat ground @58 mph. Pump was rebuilt before i got it by an official stanedyne pump place in alaska. Injectors still have grey paint so i assume they are originals and may be frothing at the tips. Any way to tell?
I know mine needs to be done soon too. Got my worst MPG towing this month on a 500 mile trip. 9.54 there and 9.03 back. Has been in the 10-11 range towing previously. All time best of 15.22 for about 250 miles while up there not towing, so there's a thinker. When I get my ZF5 in that should help, but I doubt it'll have the torque to pull anything in 5th. Pump and injectors will hopefully help.
this smells like a "mega moose goods" group buy brewing to perhaps get us a discount? we should ask Mel if he's up for it.
Im on a budget and i cant do both.i ran some injector cleaner through it a few weeks ago and thats when mph went in the toilet. Im considering turning the fuel down a little as i turned it up a tiny bit last year.
i hear ya.im tackling major repairs this year.chip trucks frame cracked and i had to have that fixed (properly! $$) then one of my chain saws blew an engine,then my wood chipper crapped out! lmao! then to top it off im in the process of developing new land (septic system right now,gravel next,then electric,then a well.) and iv still yet to take log truck in to have her dump bed (properly! $$) welded up so i can dump with it.it's never good timing is it guys.
edit;oh yeah no.it was one saw fixable,346xp but another i had to replace this year.of course the one i had to replace was the 372xp.$$
edit;oh yeah no.it was one saw fixable,346xp but another i had to replace this year.of course the one i had to replace was the 372xp.$$
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icanfixall
Official GMM hand model
Can't say definitely its pump or injectors but leaning to the injectors because of the pump changeout and the grey paint post. Call Mel or Russ and ask about rebuilt injectors or buy Mel's new manufactured injectors.
PwrSmoke
Full Access Member
A one time drop isn't necessarily something to worry about because, often as not, it's some error or a temporary change in situation that caused it. There are many things that can cause a drop in MPG, up to an including fuel that is more foamy than normal and you don't get as full a tank. This is definitely the foamy fuel season. Yesterday, I was able to eat an entire ice cream cone while topping/tricking off to my normal level (14.5 mpg, btw). Five minutes at least. I check my mileage every tank and have since 1987. I've seen drops like that and usually, it's either a bad load of fuel or me being lazy at the pump and not taking the extra time to top the tank to the same level each time. When it foams over the first time, I can usually get 2+ more gallons in. If it's bad fuel, it will bounce back. Ditto for fueler errorIf you see the low number consecutively from now on, you then can officially start tearing hair out.
Check your timing, a little off (retarded Black smoke) makes a hell'va difference in MPG. Even 1 hex on fuel turn up might be to much. Non turbo have to be carefull.
Black dawg
Registered User
The fuel pumps (at the station) are not always accurate. I had been noticing crappy mpg for awhile, and accidentally ran my front tank very close to empty. When I filled up at this same pump that I always used, I got almost 26 gallons in my front tank. I explained to the owner of the station that it wasnt possible to get that much fuel in that tank, He told me that they are calibrated every so often (blah blah blah), and wasnt possible for them to be inaccurate. They very next time I fueled up, my mpg improved.
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