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Engine/EFI/Drivetrain Discuss engine, fuel injection, air intake, and drivetrain modifications here

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Old 01-18-2012, 10:56 AM
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gas going into oil res and oil getting into intake boot

Hey guys,

Need some help!

my buddys 06 ltr 450 is having some issues.

His oil reservoir is filling up with fuel and his intake boot gets covered in oil.

Any ideas of what is going on???
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Old 01-18-2012, 11:12 AM
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rings are wore out at the least.


2006 ltr's
white & yellow
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Old 01-18-2012, 11:19 AM
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how much fuel? does it just smell like fuel or is the crankcase full of fuel.


Quote: Originally Posted by hinkle View Post
We started hitting the teens but no white stuff yet.
Speel check says it's right,

https://onedrive.live.com/view.aspx?...K_7YNJFSp6pysE
LTR450 manual ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
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Old 01-18-2012, 11:35 AM
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the reservoir is filling up to the point if you take the cap off it overflows.. and smells like fuel

once it gets overfull the bike will just stall out like the crank case is full as well.

Last edited by ride.race.live; 01-18-2012 at 11:38 AM.
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Old 01-18-2012, 12:12 PM
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Leaking injector.


Four (4) '06 LTR450's, '07 CRF250R, '09 CRF150RB


canyontackandfeed.webs.com
www.morrisoncarworks.com
www.sodalakestable.com
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Old 01-18-2012, 12:24 PM
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Quote: Originally Posted by CQR View Post
Leaking injector.
Did you fill with the proper amount of oil when it was changed last?
It seems the only way fuel can enter the motor is through the throttle body. Since the FI system requires a fuel pump and proper fuel pressure to operate and it isn't gravity fed the amount of fuel that would pass the injector seals while the bike was parked overnight would be miniscule and would have to accumulate over time. If you've changed your oil properly, how long did it take for the problem to surface the second time?


2006 14.5:1 474, C&S Racing custom cams, C&S Racing Porting, Racers Edge AZ Flywheel and FCR Carburetor, Williams Performance valve job, Xceldyne +1 valves, PSI springs, Walsh Racing Custom Piston and Crank Service, Carrillo Rod, MSD ignition, KMS intake KMS shift pin, Sparks exhaust, Fox Podium. Machining and Milling by Pro-Machine Bowling Green KY.
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Old 01-18-2012, 01:10 PM
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yea the oil changes where done correctly.

Im not quite sure how long before the oil res was full but it was within a quick ride... so within 1.5 hours to say the least... ill try and find out exactly
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Old 01-18-2012, 01:34 PM
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Quote: Originally Posted by ride.race.live View Post
yea the oil changes where done correctly.

Im not quite sure how long before the oil res was full but it was within a quick ride... so within 1.5 hours to say the least... ill try and find out exactly
If you're passing raw fuel into the throttle body while you're riding the bike wouldn't run correctly.


2006 14.5:1 474, C&S Racing custom cams, C&S Racing Porting, Racers Edge AZ Flywheel and FCR Carburetor, Williams Performance valve job, Xceldyne +1 valves, PSI springs, Walsh Racing Custom Piston and Crank Service, Carrillo Rod, MSD ignition, KMS intake KMS shift pin, Sparks exhaust, Fox Podium. Machining and Milling by Pro-Machine Bowling Green KY.
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Old 01-18-2012, 01:47 PM
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yea true!... he said it seems to be running fine.

He said within 15 - 30 minutes he starts getting fuel in his oil.
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Old 01-18-2012, 02:06 PM
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That doesn't sound right. blueranger is correct. Doesn't seem like we are getting the whole story.


Four (4) '06 LTR450's, '07 CRF250R, '09 CRF150RB


canyontackandfeed.webs.com
www.morrisoncarworks.com
www.sodalakestable.com
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