doesn't idle?

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Goat Herder

Goat Herder

Gutter Rider
Apr 28, 2008
6,237
20
38
N.M.
The gouge in that cylinder is a huge problem. You don't know if the debrees that caused it or any related shrapnel is still inside the motor block unless you disassemble the whole thing to clean it out and look. This implies taking the entire motor apart. You will totally mess up a new jug kit other wise. The result will be what you have now!
 
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motorizedmatt

New Member
Aug 31, 2010
37
0
0
Orange County CA
well I pulled the jug off and one of the piston rings was cracked. How do I get the piston off so I can throw another one on? Or is it kind of required that I take the motor apart and look for that little pice that broke off.

 
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motorizedmatt

New Member
Aug 31, 2010
37
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Orange County CA
Is it possible to remove the piston with out taking apart the bottom of the block? If I have to take apart the bottom of the block can someone link me to a how to, I looked but the search on this site is really crappy.
 
2door

2door

Moderator
Staff member
Sep 15, 2008
16,302
175
63
Littleton, Colorado
motorizedmatt said:
So you guys think that gouge in the cylinder is not the problem? What if I just swapped the jug over from another motor (I have a few busted ones)
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This is interesting news. What is the problems with your previous engines?
What oil/gas mix are you using? If you've had problems in the past, what were they? There's usually a reason for "busted".
Tom
 
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motorizedmatt

New Member
Aug 31, 2010
37
0
0
Orange County CA
2door said:
This is interesting news. What is the problems with your previous engines?
What oil/gas mix are you using? If you've had problems in the past, what were they? There's usually a reason for "busted".
Tom
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I have 3 broken engines lol. They're broken becaus I have spent soo many hours trying to figure out whats wrong with them but none of them run. I use 32:1
 
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motorizedmatt

New Member
Aug 31, 2010
37
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Orange County CA
Update - I fixed it! (for now at least) I put a different jug on it and switched the piston out to one I had from another engine and it runs great now, Idles fine and pulls all the way to top speed. Thanks for all the help guys!
 
GearNut

GearNut

Active Member
Aug 19, 2009
5,104
11
38
San Diego, Kaliforgnia
I am concerned that any remaining debris that was in the bottom end is still there. If even the teeniest bit of metal winds up in the bearings it will cause one of the rollers or balls, depending on what type of bearing is affected, to lock up and skid in the bearing race. That will lead to an early grave for that poor bearing.

I do wish you the best of luck with your repair. Sometimes one does get lucky and the bearings remained clean throughout the initial top end failure.
 
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motorizedmatt

New Member
Aug 31, 2010
37
0
0
Orange County CA
BiMoPed said:
What blew?
Please be a little more specific.
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Well I havent had time to pull it apart again but I'm assuming there is something in there that messed up the side of the cylinder wall so it doesn't have good compression. If I take all the screws out of the sides of the motor will it come apart so I can make sure there isn't any peices of metal in there?
 
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