Brute force 750i 08 problems...pls need help

gel_bf08 · Fox Joined: Jul 24, 2009 Posts: 5

Helo,

For a couple of days my brute runs like crap. After it's getting warm it only take 33-34 mph and sometimes only 22 mph. If I try to get more speed he backfire and the speed remain the same.... I think that it get's warmer than before(the airfun is working and the warm led is not flashing). If someone have any ideea...pls....

frenchie

my fan runs all the time
the light doesn't come on
its normal for them
if the light aint on its ok

gel_bf08 · Fox Joined: Jul 24, 2009 Posts: 5

Yeah man.....but it only takes 30 mph...he missfire when I try to get more speed.......

outieman

Belt check, Fouled plug, What year of Brute?

gel_bf08 · Fox Joined: Jul 24, 2009 Posts: 5

bf 750i 2008
The belt check is not flashing.....there are different speeds of backfire......is something like ,.....the speed of backfire is going down.....at cold....I can accelerate to 50 mph...but when the atv gets warmer...the speed is going down....and the low speed of backfire was...22 mph...I don't know the rpm....

SWBF750 · Grizzly Bear Joined: May 03, 2006 Posts: 2211 Location: NM

gel_bf08,
From what you describe it may be a bad Fuel pump, on the '08s it is inside the gas tank.
Before you go that route, change out to fresh Gas, bad gas can cause all kinds of problems.

SWBF750 · Grizzly Bear Joined: May 03, 2006 Posts: 2211 Location: NM

frenchie wrote:

my fan runs all the time
the light doesn't come on
its normal for them
if the light aint on its ok

What Model, what yr?
Does the fan run as soon as you start it or while out Riding?
Doing allot of slow riding?

gel_bf08 · Fox Joined: Jul 24, 2009 Posts: 5

Thanks for the reply.....Do you know how can I verify the fuel pump? How much is the output pressure for brute force 2008? I also discover that mein is burning oil( the level gets low after a long ride) or bring the oil in air filter and it only has 1200 miles.

SWBF750 · Grizzly Bear Joined: May 03, 2006 Posts: 2211 Location: NM

You aren't overfilling the motor in the 1st place are you?
A overfilled motor will put the excess oil into your air box.

I just change my engine oil w/a new engine oil filter, put in exactly 2.3 qts, reads exactly where it is suppose to after I started it up, turned it off, let it sit for a few minutes, the dip stick is reading right in the middle of the "H" and "L" mark.

Output pressure on the FI Brutes take Special tools to read the output.
There is a test you could do for the amount of Fuel Flow but it is very detailed, I'd suggest buying a Service Repair Manual.

adrenalinejunkie

Remember NOT to screw in the dipstick when measuring the level. t states this right in the manual. Good luck. Sounds like to much oil.

BTW, did you snorkle your machine or do you have a dirty air filter? Both of those can cause this as well.

gel_bf08 · Fox Joined: Jul 24, 2009 Posts: 5

There isn't to much oil.........after a ride it is under low level.......Yesterday I get out the engine breather from the air filter and the kawi rides ok. When it gets warmer(the fun begin to work) it looses power. The first time I get 61 m/h and second time(when it gets warmer) I get only 50 m/h on same distance. The speed raises slower when it is warm and I don't get the maximum speed. The fun is working and the water sensor is not liting but the atv is like an oven.