Can anyone explain 8-9mpg?

CVTitan05 · 03-31-2012, 10:47 AM

Hey everyone, ive been fighting this bad mileage for a while, like no "oh im getting 13, what can i do to get 20?"

No. Im fighting to get in the double digits!

I thought it was my exhaust manifolds were very badly cracked, and turns out they were cracked quite a bit, and on one i was missing HALF of a gasket!
Missing half a gasket is hard to do, but the tech said while installing the originals the gasket must have tore, and then over time the exhaust blew the gasket out of place and it went bye bye.

So i figured that would fix my problem when i got them replaced. No dice.

Still around 8mpg, and if i baby it i get 9mpg. I cant figure it out!

Ive got my own K&N round filter that just clamps to the stock tube (Got rid of the air box) and a FM Super 44.

I do all my own oil change about 2,000 miles ago, and the tranny, rear diff, brakes fluid, and power steering fluid were done 5000 miles ago, the belts are still new, hoses are good. I keep my truck maintained as much as i can, but its not helping!

Any advice guys?

**StormTroopin** · 03-31-2012, 10:49 AM

Well... You bought a truck. What do you expect?

totally being sarcastic.

Maybe somehow your afr's are WAY out of whack?

CVTitan05 · 03-31-2012, 10:52 AM

I dont have a way to check them? How do i know what their at?

And i just reset the computer when i got it from the dealer, forgot to mention that.

honda250xtitan · 03-31-2012, 11:11 AM

try an ecu reset? i think there's a thread or two on doing that. that sucks though man.

MRS.WIKEDVK · 03-31-2012, 11:39 AM

Someone with uprev.... they should be able to data log it..

CVTitan05 · 03-31-2012, 11:59 AM

Gotta find someone close to me with uprev...

Anavrin351 · 03-31-2012, 01:47 PM

or dyno it, they watch A/F ratios while doing it.

whens the last time a tune up was done?

Chazz · 03-31-2012, 05:58 PM

CVTitan05, I'm in the same boat. I get 8-9 around town and 10.5 on the freeway. Frustrating.

yscty · 03-31-2012, 06:09 PM

Could it possibly be heavy right footitis?

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**StormTroopin** · 03-31-2012, 09:49 PM

^^^^ especially since he gets a lot of tickets... Lol

CVTitan05 · 03-31-2012, 10:29 PM

Recently my leadfoot has been cured, been too tired the past couple weeks with school/work/girlfriend, etc to have any "go fast" moments. Lol.

nissankidd · 04-01-2012, 05:05 AM

Cvt I would try installing a stock air box for a tank or two and see how it does. For your mpg to be that bad you must have a afr issue from an intake leak or something. What kinda of exhaust gaskets and manifolds did you install?

CVTitan05 · 04-01-2012, 10:06 AM

Quote:

Originally Posted by nissankidd

Cvt I would try installing a stock air box for a tank or two and see how it does. For your mpg to be that bad you must have a afr issue from an intake leak or something. What kinda of exhaust gaskets and manifolds did you install?

I dont have my stock intake anymore, i cut the end of the stock intake that had the MAF mount, and then stuck the filter on the end of that. And the manifolds were done at the dealership under warranty.

NBhunter80 · 04-01-2012, 10:24 AM

Heavy right footitis can cause that one for sure.

Also do the ecu reset, and check for a siezed brake caliper or parking brake shoes.

EASTtxTITAN · 04-01-2012, 10:47 AM

i get 10.5 city normal driving and 12.6 highway...you should def be getting better milage than me.