Fuel Injector / Throttle Body Service

[Scarsman]

Originally Posted by Cesardajr

i thought the handheld tuner would correct the higher rpm's issue.
i also thought the 4.88's would make the engine work less.
i can see the higher rpm's without the tuner.

The tuner will correct the speedometer with the lower gears, but does nothing for engine rpm vs ground speed ratio. The lower gearing means the engine has to spin faster to make the axles turn the same speed they did with the higher gearing. That is what makes the moter have to "work less." Imagine a mountain bike. When you have it in an "easy" gear it is really easy to pedal but you don't go very fast. This is low gearing. Now if you put it in a "hard" gear, you pedal slower but you go faster. This is a high gear. You are experiencing the same effect that your engine will feel if you go to lower gears. To go the same speed as you did not a high gear you would have to pedal like crazy, and would become exhausted, or use more fuel.

[pdxrealtor]

Cleaned the MAF sensor and running the first tank of SF through it now.

What a difference cleaning the MAF sensor makes!

Thanks guys!!

[OrangeCrush]

Originally Posted by pdxrealtor

Cleaned the MAF sensor and running the first tank of SF through it now.

What a difference cleaning the MAF sensor makes!

Thanks guys!!

I was going to suggest cleaning out the throttle body by hand (you clean the "ring" of deposit left from where the plate closes) and getting some good fuel injection cleaner in your tank.

At your mileage, I think it would be a waste to spend 250 (which is ridiculous btw) on your truck.

Originally Posted by HUMTECH

Um lower gear ratio=higher rpm=less fuel mileage

That's not always true... If you put a set of 37's on an H2, you're effectively changing the gear ratio from 4.11's (stock) to say 3.23's (for sake of discussion)

Technically you'd be lowering the rpm and based on your higher rpm=less fuel logic, a driver should expect better gas mileage.

All of this is within reason. Anyone doing so will see a decrease of mileage of 2-3 mpg simply because the engine had to lug harder to pull the truck around. Turning over heavier, larger diameter tires will hurt gas mileage out of the hole and on the highway.

Where you may see an increase it cruising at about 45 in the city. (providing you're not stopping and going)

Just sayin'


Mark

[The_Yeti]

Cleaning the Throttle Body is the only time I wish the hood opened up vs fwd.

[pdxrealtor]

Would it be worth it to clean the throttle body?

If so what to use? My buddy was saying some throttle bodies have a Teflon coating that shouldn't be touched.

[The_Yeti]

Originally Posted by pdxrealtor

Would it be worth it to clean the throttle body?

If so what to use? My buddy was saying some throttle bodies have a Teflon coating that shouldn't be touched.

The same company that makes the MAF cleaner,CRC makes a throttle body cleaner. I use a toothbrush and give it a good scrubbing. I think the teflon ones you reffered to are on Fords.



I'm tempted to try this SEAFOAM, Does it smoke the whole tank full or just in the beginning, also any worries with this, I just ran a fuel injection cleaner not that long ago. I think someone mentioned having your oil changed after doing a seafoam cycle.

[pdxrealtor]

I put in 2 cans. It was on sale for the same price at my local parts store also.

YETTI-

It doesn't smoke at all when added to fuel. Only when you suck in the manifold with a vacuum line.

You can also add it to your oil a day or two before you change it.

NOt sure if you'd be doing things backwards if you cleaned your injectors/fuel system first and then added it the oil before an oil change.....

[guruerror]

Originally Posted by The_Yeti

Cleaning the Throttle Body is the only time I wish the hood opened up vs fwd.

I agree 100%! What a PITA!

Cleaned the MAF and scrubbed the throttle body with the CRC products. Replaced my K&N filter and dumped some Sea Foam in the tank and oil...

...all I have to say is, "zoom zoom!"

[Cesardajr]

Originally Posted by pdxrealtor

Cleaned the MAF sensor and running the first tank of SF through it now.

What a difference cleaning the MAF sensor makes!

Thanks guys!!

you should be running 2 cans of sea foam with a full tank,
if you read the can 1oz does 1 gallon,
since a can has 16oz you should use 2 cans, that's what i do.
btw i went to pepboys yesterday and they have a special buy 2 cans of sea foam and get one free instore.
that's $6.67 each can.