Smoke hole on 04 250F

Joined
Feb 25, 2001
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#1
There is a small hole on the right side of the cr250F engine block....upon a cold morning warmup thismorning I saw smoke comming out of it and it didnt have a nice smell....kinda a dirty burning plastic type of smell. What is this hole for? Is this a exhaust overflow hole? I didnt keep the engine running after I saw this for fear of what that burning smell was.
 

High Lord Gomer

Poked with Sticks
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Sep 26, 1999
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#2
On the CRF450 that is the drain hole for the splark plug hole. Since the spark plug site down in a recessed hole, it can collect water and it it supposed to drain out of that hole.
 
Joined
Feb 25, 2001
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#5
I must have gotten some junk down in there that is smoking with the heat of the engine...the bike hasent been washed recently so im just hoping its dirt.