Tired Straight 6

Asked by Sep 20, 2010 at 02:38 AM about the 1996 Ford F-150

Question type: Maintenance & Repair

I have a 96 F150 straight 6 4.9 liter with manual trans. I like the looks, size and ride of the truck. But the engine seems tired at 120,000 K and gas milage has plummeted. Eddie Baur with clean body and interior. Can I put a newer 6 clyinder engine in it? A rebuild. What's the best way to get life back in the drive train - and will I have to replace the trany also (shifts fine but heard new engine with old trany will cause problems). Sorry, trying to decide if I keep this one or send it down the road. If I can get it running great again, I'd likely keep it.

6 Answers

25

Try doing or getting a tune up done (new spark plugs and wires). Replace the fuel filter, air filter (if it has been a while since it was replace). Also if it needs it, change the oil. I would also run a bottle of Lucas fuel treatment through a tank of gas to help clean the injectors. This is all regular maintance stuff that should keep the truck running right. One of my friends has a 95 with the same set up with orginal motor with over 170k and his runs great.

1 out of 1 people think this is helpful.
5

Run some seafoam in the tank a whole bottle and then put half a bottle in the oil or as the bottle says depending on the amount the straight six holds and they vary in years on how much they hold. A new motor with old tranny is not a bad thing but i recommend u check the gear lube level in the tranny or change it if you are goin to put a new motor in, this will help the gears in the tranny hold up to the torque of a newer straight six but and this parts big check your gear ratio i have scattered a tranny before cause a buddy told me if i hooked them up it'd be fine but the newer six had more than stock torque which i was not told so i found a warner T-18 4spd and boltted it up and works great but also after your first rear main seal it'll go out ever ten thousand after that.

Do the tune up,replace the fuel filter also,have the timeing checked to,it could be a little off with the milage,also change the pcv valve.DONT listen to this jake jokester,what he post is pure BS.if you are concedering a new engine,dont worrie,you wont explode the tranny,tourk and hp in a new one well be the same as when you bought the truck new,these,s are great engines and with regular service you will get at least,500,000 miles out of it.

2 out of 2 people think this is helpful.
1,215

Papa is right. Don't listen to jake. Hell if you want to save some time, Don't buy a new motor. Just rebuild this one. Rebore it, restroke, new valves, heads, intake, all that fun stuff. Very simple, but very time consuming too.

1 out of 1 people think this is helpful.

check the compression

I have a '96 Eddie Baur, Reg Cab, Long Bed and it has 129,000 miles. I'm having the same issues as well. I'm getting 10-12 MPG and it seems to slightly studder when excellerating. I changed the wires, plugs, rotor, distributor cap. I also ran a can of Sea Foam in the Fuel tanks and oil and the second can on the vacuum hose. I guess I now need to check the Cat and the 02 sensor. I also heard some guys telling me about a restricter plate that goes on the EGR Valve that helps smooth out the motor and makes it run like brand new. There must be 10-20 different ways to improve milage and performance on these. The problem is which one to go with.

Your Answer

Add photo

Related Questions

F-150

Looking for a Used F-150 in your area?

CarGurus has 210,087 nationwide F-150 listings starting at $895.

ZIP:

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
OJ
Reputation 7,210
#2 dandyoun
dandyoun
Reputation 4,260
#3 tennisshoes
tennisshoes
Reputation 2,590
View All

Related Models For Sale

Used GMC Sierra 1500
861 Great Deals out of 64,419 listings starting at $1,500
Used Dodge Ram 1500
438 Great Deals out of 11,486 listings starting at $700
Used Toyota Tacoma
522 Great Deals out of 37,570 listings starting at $2,950
Used Ford F-250
487 listings starting at $3,975
Used Ford Mustang
314 Great Deals out of 45,684 listings starting at $2,000
Used Ford Explorer
716 Great Deals out of 74,482 listings starting at $750
Used Chevrolet Tahoe
607 Great Deals out of 27,648 listings starting at $600
Used Ford Ranger
178 Great Deals out of 6,234 listings starting at $1,300

Used Cars For Sale

2017 Ford F-150 For Sale
3 Great Deals out of 116,887 listings starting at $18,299
2016 Ford F-150 For Sale
150 Great Deals out of 29,272 listings starting at $17,877
2015 Ford F-150 For Sale
197 Great Deals out of 7,289 listings starting at $11,600
2014 Ford F-150 For Sale
450 Great Deals out of 12,406 listings starting at $9,995