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| Lousy gas mileage Dodge 360 #728665 |
October 08th 2017 7:44 pm October 08th 2017 7:44 pm
Joined: Sep 2016 |
Il Jerry_XtraVanTastic OP
Joined: Sep 2016
I took the Dodge camper on a 300 mile trip this weekend. Keep in mind the wind was blowing harder than I've seen in a long time . The Dodge was a handful even at 55 to 65 mph .
But I only got 8.9 mpg that's horrible.
I'm wondering if I should start replacing parts.
Start off with
new plugs and wires.
possibly replace the Coil , it's the original
possibly the brain box computer.
Sometimes when you floor it It bucks and stumbles, but only sometimes , let off it and floor it again and it's fine.
oh I very recently had the Rochester 4 barrel rebuilt. It seems to run really well.
I think the fuel pump needs replacing. I still have to crank on it to start it.
1988 Dodge B350 1ton
727 3 speed trans
4 barrel Rochester carb.
Last edited by Jerry_XtraVanTastic; October 08th 2017 7:46 pm.
| Re: Lousy gas mileage Dodge 360
October 09th 2017 11:08 am October 09th 2017 11:08 am
Joined: Nov 2013 |
West Texas Wedgy
Joined: Nov 2013
Hightops are a handful! Not the ideal situation for gas mileage. I run stiff Bilstiens and tires. Air bags run seperately, plus the factory Hellwigs in the rear. All that helps quite a bit in the wind. Cuts way down on the Pucker Factor.
My experience with mechanical fuel pumps is when they fail, yer not going anywhere. With a computer, you may not be able to alter the coil, depends on how electronic your ignition system and the distributor is.
A tune up never hurts if it's time, especially new wires. Cap and rotor for sure. Plus a quality oil change. That has got every vehicle I've owned through smog in Cali.
Well, except for the 298000+ mile 2.8 v6 in the S10...
My '88 318 has throttle body FI. The '94 360 in the Xploer has MPI. There's a reason Dodge went FI...
If thats a computer controlled carb and your accelerator pump works? Sounds like it's as good as that carb will be. The only carb I have on the 4.3 Chevy in the Searay does the same exact thing as yours.
The 727 doesn't help. Xplorer's are heavy. Carb, no OD.
Might not achieve much gain, but the motor will be happier.
I prefer all the engine and tranny mounts be solid, so I can apply power firmly to the ground so I can enjoy not achieving great mileage while driving the V8s.
How is the exhaust? No matter whatchure talkin about, a clog is never ever a good thing.
Good wrenching, and Happy Vanning!
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