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Craig VanDerMeer Posted on Aug 21, 2016
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Why is oil leaking from my throttle body area?

In the process of changing my fuel filter...left it for a couple days and I have a puddle under my bike. Didn't have time to finish installing the filter and discovered the fuel pump isn't... so I have this to contend with as well. In the meantime, there's this oil thing... It all started with some bad gas in the bike at the beginning of the summer and it not wanting to start, started with the filter, finally, was due for a change anyway, and...you get the picture.

  • 2 more comments 
  • Craig VanDerMeer
    Craig VanDerMeer Aug 22, 2016

    Well, all good points. Looks like the oil was pumped into the air cleaner box. Most of you are saying a gunked up carb is the culprit for a non start, but what about the fuel pump not coming on and I'm still not sure that a plugged carb would make oil go to the air box. Stranger things have happened though...

  • Marvin
    Marvin Aug 22, 2016

    Without seeing this for myself I really have no more than a guess.

  • Craig VanDerMeer
    Craig VanDerMeer Aug 22, 2016

    Not a problem, that's kind of how I'm going through it... Once I get it running, I'll have a better idea of this deal. That bad fuel corroded the rubber isolators on the fuel pump and ruined the plastic coating on some of the wires going to the fuel pump. Also deteriorated the filter on the bottom of the pump assy. Tested the 2 electric pumps/motors, whatever they are, on the pump and only one and any resistance so... new pump on the way and I'll go from there. Was thinking maybe there's some rubber seals that the fuel could have gotten to that would let the oil pass by. We'll see.

  • Marvin
    Marvin Aug 23, 2016

    Check and verify the crankcase ventilation system is not restricted or clogged, if it is there will be pressure in the crankcase when the engine is running, this would be a PCV issue or worn piston rings or a scored cylinder wall.

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1 Answer

Marvin

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  • BMW Master 85,242 Answers
  • Posted on Aug 22, 2016
Marvin
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Joined: Jun 20, 2008
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It sounds like you overfilled the bikes crankcase.

  • Craig VanDerMeer
    Craig VanDerMeer Aug 22, 2016

    Hmmmm, guess that could be something. Although my oil level isn't high, it did take a bit more than specs called for back when I changed it. Could've been this way for a while and it just happened to rear it's ugly head while I'm having to deal with the fuel pump/starting issue... Something else to check into....

  • Marvin
    Marvin Aug 22, 2016

    All that damage was caused by the alcohol they put in gasoline. Replce them with viton rubber O rings. Had this happen to my GSX 750 Suzuki. Ruined the paint on the left fairing.

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5 Related Answers

Anonymous

  • 2712 Answers
  • Posted on Nov 20, 2008

SOURCE: Breaking Down

The problem may be a pinched fuel or vacuum hose, or a weak/collapsed vacuum hose. The problem may be varnished fuel/carburetors. It may be an electrical problem: loose connector or defective conductor. I cannot help you other than this without having the Duc and performing a few tests. The Monsters are fun to ride.

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Anonymous

  • 2559 Answers
  • Posted on Feb 08, 2009

SOURCE: 2002 K1200LT not getting enough fuel

This sounds like you just need to clean up the fuel system.

  1. Clean the throttle body
  2. Change the fuel filter.
  3. Run some injector cleaner through the system.
  4. change the air filter.
If that doesn't do it,have the injector replaced


Please rate this a fixya

Anonymous

  • 7 Answers
  • Posted on May 09, 2009

SOURCE: Bike stalls from time to time

the fuel filter is inside the tank, be sure your thorughly cleaned the tank of expired gasoline, clean the jettings again on the carb, those are so tiny particles you think cleaned already. Change the hoses too, they have a life span and the particles from the old hoses goes to the jettings. Your prob is definitely fuel based prob

tombones

  • 3567 Answers
  • Posted on Jun 14, 2009

SOURCE: 2001 V-Star Classic won't start

A yellow spark is a weak spark. A blueish white spark is normal. It sounds like the CDI is not in good shape. A dealer can quickly check the system and tell you what the bike needs.

A “very helpful” rating for this answer? Thanks!

DoubleClutch

Greg O'Day

  • 376 Answers
  • Posted on Oct 28, 2009

SOURCE: 2000 Vulcan Nomad 1500 FI - Bike was sitting for 6

You need to remove the carbs and dismantle them completly and adjust them to spec. Also change the fuel filter.

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