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Norm's 2 stroke repair center Having problems with you 2 stroke motorized bicycle engine? Just ask Norm. he loves to tinker and troubleshoot engines.

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  #1  
Old 09-14-2009, 09:29 PM
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mark skywalker mark skywalker is offline
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Default engine oil coming out

Hey there, so I just finished building my bike and rode it around a few times. One thing is that it seems to only work at high rpms, otherwise when I move the clutch for it to idle lower, it usually dies. Then I noticed some oil coming out of the front of the engine. Is that bad?




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  #2  
Old 09-15-2009, 04:27 AM
oylavabeer oylavabeer is offline
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Default Re: engine oil coming out

sounds like a leaky crankcase
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  #3  
Old 09-15-2009, 09:49 AM
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azbill azbill is offline
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Default Re: engine oil coming out

looks like a not-tight-enough head
the pic shows leaking from head gasket
take a ratchet and hold it by the head (not the handle), tighten it down
by holding the head of the ratchet, you will have less chance of over-torquing and stripping threads
hope that helped a little

I think I got that tip from bikeguyjoe, many moons ago before this form was around
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  #4  
Old 09-15-2009, 10:59 AM
drhofferber drhofferber is offline
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Default Re: engine oil coming out

Quote:
Originally Posted by mark skywalker View Post
Hey there, so I just finished building my bike and rode it around a few times. One thing is that it seems to only work at high rpms, otherwise when I move the clutch for it to idle lower, it usually dies. Then I noticed some oil coming out of the front of the engine. Is that bad?



yea..its the head gasket...torque 10 to 12 lbs...no more...and you better reroute your power wires...not over the exhaust...burn everything up...good luck...Dennis
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  #5  
Old 09-15-2009, 10:39 PM
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mark skywalker mark skywalker is offline
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Default Re: engine oil coming out

ok awesome, I'll tighten em up a bit then. thanks!
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  #6  
Old 09-20-2009, 11:50 PM
Austeve Austeve is offline
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Default Re: engine oil coming out

I had the same problem. Turned out to be leaking from the spark plug thread. With the engine running you could see it bubbling out. A new quality spark plug fixed it.
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  #7  
Old 10-13-2009, 07:43 AM
Fabian Fabian is offline
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Default Re: engine oil coming out

If everything is in good working order, the only time you need to worry is when oil and black filth doesn't leak out of your 2-stroke engine - you start panicking if this ever happens.

2-strokes are designed to leak oil and filth - it's a good sign you'll get home.

Fabian
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Old 10-14-2009, 04:36 PM
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spad4me spad4me is offline
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Default Re: engine oil coming out

If you are planning on parking that greasy, stinky thing inside it will need a drip tray .
One of these days the large amount of two stroke goo in the muffler will come out and visit with you.
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  #9  
Old 10-15-2009, 12:34 PM
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BarelyAWake BarelyAWake is offline
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Default Re: engine oil coming out

o_O

Yer both outta yer minds lol - I park my ride indoors all the time w/o a drop on the cardboard I put down just for that purpose.

If yer 2stroke is spewing - blame the owner not the motor


Now gobs of mud are a completely different story
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