86 yota

I have an 86 pickup with the 22r motor and 31 inch tires with 4:56 gears. I was wondering what might be the problem with my mpg. It seems to have dropped from 20 to 16 here lately. I switched to synthetic in the motor recently and it hasn't really helped. I just had a new tranny and timing chain installed about 8,000 miles ago. I was wondering what might be causing this loss in fuel mileage. The truck runs and idles good and lacks power just like every other 22r motor but, it usually burns a quart of oil between changes. Also what do you guys do for power improvements for the most bang for the buck. Ps. My truck has a 5 spd and 190,000 miles.

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Drive train: Detroit Truetracs front and rear with Yukon 4:56 R&P.
Body: Bushwhacker Fender flares
Suspension: Skyjacker Hydro 7000 shocks, 2" ome/Bj spacer lift. Diff Drop
Tires & wheels : Tires 33x10.50 BFG KM2s, On Mb Motoring Razor wheels.
Line X spray in bed liner.
Armor: ARB Deluxe Bull Bar. Custom rear bumper, Custom rock sliders,Budbuilt Crossmember.
Rebuilt: Motor, trans, clutch
Lighting: IPF 868

Tim_Snapple76

change spark plugs, wires, air filter, distributor cap & rotor... atleast i think.. maybe a new O2 sensor, if it has one.....?? tim.

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91 sr5 3SLOW auto xtra cab 4x4 : K&N air filter, isr mod, new exhaust, rebuilt tranny @ 237k miles. 31x10.5x15 dayton mt, combo kit brush guard with kc lights, 20% tinted windows all around, panasonic cd player & all new speakers, max 4 seat covers & floor mats, sirius satellite radio. Running strong @ 250k miles. Headgasket replaced @ 239k miles.

Jay351

if the o2 sensor has more then around 100K on it then change it out.

do a tune up (obviously)

run a can of seafoam through your intake and some in your gas.

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91 Pickup - xcab - 5sp - 3.0 - SR5 - 4x4 - 250k |2.25" catback w/ magnaflow cat + glasspack | Weasy2k cams | Aisin manual hubs | Diff breather mod| Marlin HD clutch |3" BL | es3000's |2" AAL |1.5" bj spacers | ISR | Alpine headunit | 4" Infinity fronts/5" rears | 4.88's |Rear lockright | 33x12.50" BFG M/T on 15x8" steelies |Hella 500's |4" reverse lights| Grant GT |idler arm brace|hella E-codes| Marlin armor |SS IFS brace | %100 Amsoil synthetic


http://www.cardomain.com/ride/2572486

Tim_Snapple76

ditto the seafoam. that might cure a few problems.

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91 sr5 3SLOW auto xtra cab 4x4 : K&N air filter, isr mod, new exhaust, rebuilt tranny @ 237k miles. 31x10.5x15 dayton mt, combo kit brush guard with kc lights, 20% tinted windows all around, panasonic cd player & all new speakers, max 4 seat covers & floor mats, sirius satellite radio. Running strong @ 250k miles. Headgasket replaced @ 239k miles.

86 yota

i actually just bought an o2 sensor and apparently my truck doesn't have one. Neither that nor a fuel filter. Me and my dad looked for these two things for hours and didn't find them on my truck. I just changed the spark plugs and wires about 5K ago so they should be good to go. I recently heard that the carbs on my truck usually went around 200,000 so that could be the problem. I have a k&N air filter that gets cleaned regularly. The seafoam stuff sounds great but, i am a little scared of doing it.

__________________
Drive train: Detroit Truetracs front and rear with Yukon 4:56 R&P.
Body: Bushwhacker Fender flares
Suspension: Skyjacker Hydro 7000 shocks, 2" ome/Bj spacer lift. Diff Drop
Tires & wheels : Tires 33x10.50 BFG KM2s, On Mb Motoring Razor wheels.
Line X spray in bed liner.
Armor: ARB Deluxe Bull Bar. Custom rear bumper, Custom rock sliders,Budbuilt Crossmember.
Rebuilt: Motor, trans, clutch
Lighting: IPF 868

TheVandMan

no o2 sensor or fuel filter???

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92' Pickup 22RE 4X4


It's all about love, really.

Jay351

I dont think 22r's had o2 sensors.
But since it was an 86 I figured it would be fuel injected.


no fuel filter is a new thing for me though...

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91 Pickup - xcab - 5sp - 3.0 - SR5 - 4x4 - 250k |2.25" catback w/ magnaflow cat + glasspack | Weasy2k cams | Aisin manual hubs | Diff breather mod| Marlin HD clutch |3" BL | es3000's |2" AAL |1.5" bj spacers | ISR | Alpine headunit | 4" Infinity fronts/5" rears | 4.88's |Rear lockright | 33x12.50" BFG M/T on 15x8" steelies |Hella 500's |4" reverse lights| Grant GT |idler arm brace|hella E-codes| Marlin armor |SS IFS brace | %100 Amsoil synthetic


http://www.cardomain.com/ride/2572486

Tim_Snapple76

i thought all of them had fuel filters. im not as familiar with the 22r as i am the 3vz. wish i could help you more. actually the seafoam treatment is great and really produces some good results. it burns up all that gunk in your carb, and smooths rough idle. it'll actually run alot better when you get done with it. try putting it through your brake booster vacuum line. anyways there is a link somewhere for that. i would seafoam the carb, and then if you're still having trouble i might look into finding the fuel pump or filter wherever they may be. tim.

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91 sr5 3SLOW auto xtra cab 4x4 : K&N air filter, isr mod, new exhaust, rebuilt tranny @ 237k miles. 31x10.5x15 dayton mt, combo kit brush guard with kc lights, 20% tinted windows all around, panasonic cd player & all new speakers, max 4 seat covers & floor mats, sirius satellite radio. Running strong @ 250k miles. Headgasket replaced @ 239k miles.

86toysr5

did u check next to the tank....it should b on top of the frame so u gotta look under the the bed but lucky for me mine was rusted off from the seam down it was gone so it was right there but i had a 86 with the 22r also

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86 toyota sr5 with a 1980 20r*sold*
97 tacoma with 2.7 n 5sp-pos that hasnt run in 5months, new crank, main n rod bearing, a few new gaskets

2008 silver honda 600rr

stormin94

Check your air filter if MPG has fallen off. Also, check timing.

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Future Mods
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roof basket/lights
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4.88 gears
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the_gunslinger

25" tires and some 3.55's will get you somewhere. don't forget to pull out the 4wd, lower it, and keep your tank full. (perhaps less air in the tank will allow for less evaporation)

sdstud212001

If you carry alot of gear (I do) maybe unload some of it for around town use.

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1987 DLX 4X4 5 Speed: Electric Flex-a-Lite,SR5 guages,Yokohama Geolander A/T+ II,Pro Comp AAL, KC Slimlites, Bull Bar, Aux fuse box, Limo Tint, Marlin Crawler Bumper, painted shell, Sirius
Wish List: Safari Rack,Bigger tires, SDORI BJ Spacers,

2001 Limited 4X4 Auto:Tundra 231mm brake upgrade, Brembo Rotors, Akebono Pads, 17" 2007 4Runner wheels, Yokohama Geolander AT-S,Sirius & Limo tint
Wish List: TJM Front Bumper, KC Hilites, Safari Roof Rack, Thule Cargo Box, Rock sliders, Limo Tint

CyMoN

use carb cleaner if you want to clean the carb try sea foam after you clean the carb and wait a week after cleaning the carb before you use the sea foam.

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my rigs
89 4runner
1989 4runner v6 5 speed everything factory +4susplift running bfg 31s and a aux gas tank and more aux lights than needed

86 pickup
1986 stock pickup 22r 31.10 BFG ATs flatbed

a sad day for the 4runner
"One moment of patience may ward off great disaster. One moment of impatience may ruin a whole life."

highway

look here for the fuel filter " Under vehicle, passenger side, below seating area, near fuel tank, mounted on frame rail in fuel line".

highway

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1989 4x4 regular cab, 22re/5-speed, Tacoma wheels/10:50's

SEAIRESCUE

The fuel filter should be on the passenger side of the ENGINE just above the starter. Pack a lunch when changing it and DISCONNECT the BATTERY!

Your low compression (buring a quart of oil...) is your mileage problem. And, you may be getting fuel with 10% ethanol without it being obvious. That will knock down your mileage and the most likely culprit.

A fresh engine, read overhauled, will likely give you up to 5 mpg.

My $0.02

idayota

good info already on this post...

check how much weight you're carrying around town (tools, recovery equipment, passengers, stereo stuff)

seafoam is a great product, but it is no replacement for a carb rebuild (not that difficult)

both my 84 and 83 22r's had two o2 sensors. on both rigs, i cut both o2 sensors out of the system and it didnt change a thing...on the 83 i kept the stock carb, on the 84 i went to a weber carb (32/36) which improved my mileage (when i could keep my foot out of it) and my power (when i put my foot into it)

poor compression will lower your mileage...fact of life

you check your gear oil (tranny, transfer case, diffs)? i've always run lucas oil stabilizer in all my gear boxes and have always felt that it improves my mileage (although i have no baseline prior to putting in lucas since it is one of the first things i do)

what does your exhaust look like? blowing any black smoke? put a white towel or sheet at your tailpipe and rev the motor a bit. see how much carbon is coming through unburned. i had a vacuum line on my 83 that was pulling straight fuel from the charcoal canister (not sure, dont ask...the guy before me wasn't mechanically savvy) and making everything weird. pull off some vacuum lines (one by one) and smell for gas.

what shape are your tires in? how long ago did you rotate them? are they mud terrain (lower mileage). air pressure ok? i would fluxutate up to a couple miles per gallon just by 5-10 lbs of pressure (but at 35 lbs, your ride also suffers compared to 27-30 lbs).

check your wheel bearings? got one dry/loose? check your brakes to make sure you dont got one dragging?

hope this gets some more ideas rolling...in both my 83 pickup and 84 4runner i averaged 20+ mpg with 35's and 5.29 gears. around town with the 84 i would consistently get 20 and at 55 miles per hour, i would average 22. a lot of people think it is impossible, but it isn't. also, a lot depends on your driving style. if you are trying to keep up with everyone off the line of every stoplight, your mileage is going to suffer. if you keep the pedal mashed going up long hills and dont down shift and back off a few miles per hour, you're killing your mileage. just my $0.04.


ps. make sure you're not burning the cheapest fuel in town...especially 10% ethanol.

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Wherever, Whenever, However...Tread Lightly!

aviator

The fuel filter on your truck is a small white translucent plastic "can" it looks sort of like a large white "bobber" like you use when fishing. It has two rubber fuel lines coming in/out of it. It is located on the passenger side frame rail just about underneath the fuel filler. I replaced mine about twice a year when I had my 87 22r since I spent a lot of time on const. sites and dirt roads back then.
As for mpg improvements... like all said get a tune up, K&N air filter will help lots, you said you switched to synthetic oil... what grade? I always ran Shell Rotella T 10W30 which is a premium quality non-synthetic but it can be difficult to find. You might put a can of "Engine Restorer" in the crank case next oil change this product will help swell some of the old seals and repairs some of the scoring in the cylinder walls which will help bring back the compression you are loosing there. It worked wonders in my 94 3.0.
Keep an eye on your tire pressure you can loose a lot here as well.
Hope this helped aviator

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Silver 1994 Hilux Xtra cab 4x4 3.0
K&N cone filter, ported MAF, advanced timing, oversize exhaust, free flow cat, "rumble" muffler
custom covered SR5 seats, map lights, factory AC

tv4184 style black interior conversion started

mods to come... header,
custom centre console, stereo upgrade
tinted windows

Founding member 1972TLC fan club - Get well soon Mary

Toyota Hilux... Get in or Get out of the way.