Crankcase overfilled??? - Wrist Twisters
 
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post #1 of 12 Old 04-06-2009, 07:39 PM Thread Starter
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Question Crankcase overfilled???

I've noticed over the past two times I've been out on the FZ1 that when I come to a stop I get a little smoke coming from what seems to be under the tank. It bellows out a little through the radiator and out in front of the bike. Not extreme but enough to notice. More noticeable at night as it shows up in front of the headlight.

My bike only has 2500 miles on it. Previous owner did the oil change at 1000k with Amsoil 10w40 full synthetic. I didn't notice it at all on the ride home when I picked it up (had 1700 miles then) but now I do.

Haven't been beating the snott out of it at all. Just normal riding. What I have noticed is that when the bike is level, the site glass is completely covered with oil...Not half way covered like any other crankcase site glass has ever been specified to be at on any other bike that I've owned.

Do you guys think it is just over filled enough to cause this? I peaked around real good tonight after I took it for a spin with the new exhaust and noticed oil residue on every bottom throttle body boot and clamp I could physically see. Not puddles but enough to me that would cause it to blow around and create smoke.

I'm thinking the crankcase is overfilled enough to cause some blow by

I have an extra quart of Amsoil 10w40 that he gave me when I picked up the bike. He was very neat and tiddy and didn't seem like a guy that didn't know what he was doing but maybe he over filled it?

I'm not sure how much oil he put in it...Figured I'd check the manual and see if the manufacture specifies the site glass be halfway covered with oil.

I was gonna put it on stands tomorrow and let some out and top it back off to halfway in the site glass and see if this cures my issue.

Any input would be appreciated


2008 Yamaha FZ1-Street
2005 Honda CBR 600rr-Track
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post #2 of 12 Old 04-06-2009, 07:50 PM
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Chris. Get a small bulb pump and small hose and drain the oil untill it is between the lines. Overfilling can do lots of weird things



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post #3 of 12 Old 04-06-2009, 07:53 PM
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It definitely sounds overfilled to me, check your manual for the proper level, I bet if its like most bikes it shouldnt be much over 1/2 way up the glass

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post #4 of 12 Old 04-06-2009, 07:53 PM Thread Starter
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Quote:
Originally Posted by barton664 View Post
Chris. Get a small bulb pump and small hose and drain the oil untill it is between the lines. Overfilling can do lots of weird things
I know...Same with cars...This is what I really think is wrong with it and what I was gonna do tomorrow...Only issue or complaint I've had with it to date...Hopefully this is the last


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post #5 of 12 Old 04-06-2009, 07:54 PM Thread Starter
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I haven't ever owned a bike, street or dirt, that states anything other then halfway up in the site glass


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post #6 of 12 Old 04-06-2009, 08:08 PM Thread Starter
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Just took a peak in the manual...States "The engine oil should be between the minimum and maximum level marks"

States the usual, Set bike on stand (level) and run till warm. Shut off and let oil settle. Check site glass and adjust as needed.

Will correct it tomorrow.

What about the oil on the intake boots? It's not severe but enough to notice. Should I be worried about it or just correct the oil level, clean off and inspect it later on?


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post #7 of 12 Old 04-06-2009, 08:25 PM
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my friend had these same symptoms on his ZRX. It ended up being a bird stuck in the headers.

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post #8 of 12 Old 04-06-2009, 08:49 PM
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Quote:
Originally Posted by cmurphy84 View Post
my friend had these same symptoms on his ZRX. It ended up being a bird stuck in the headers.
now that's funny !!
Warnings

* Overfilling your engine increases oil pressure, putting strain on seals. Think about this. Racers usually run their cars/bikes with even less oil than the manufacturer recommends as the bare minimum in oil to keep weight down. And think about how hard they run their engines. Stay on the not chock-full side and filling 1/3 of the way above "add" (or the lower marker). Just check it often, as you should anyway!

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post #9 of 12 Old 04-06-2009, 09:02 PM
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Quote:
Originally Posted by McCrimmon View Post
. or just correct the oil level, clean off and inspect it later on?
Yep, correct it and clean it you should be good. anytime the oil is overfilled its gonna get some oil or oily mist out the crankcase breathers,(especially at higher RPM or sustained operation that gets the oil good and hot) which on all new bikes is routed to the airbox.

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post #10 of 12 Old 04-06-2009, 09:03 PM
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Quote:
Originally Posted by cmurphy84 View Post
my friend had these same symptoms on his ZRX. It ended up being a bird stuck in the headers.












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post #11 of 12 Old 04-07-2009, 03:39 AM Thread Starter
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No animals hangin out in my bike

Gonna correct the oil issue today at my shop

Hopefully that tis all and this corrects it...


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post #12 of 12 Old 04-07-2009, 09:10 AM Thread Starter
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PING* MisterMike! Should I be concerned with the oil residue at the bottom's of my throttle body boots? I corrected the engine oil issue. Took out right at 1/2 quart and it put it between the marks now.


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