JR 50 won't run

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Sakuraba

Member

Jul 15, 2007

5

0

• Jul 15, 2007

• #1

I just bought a 2000 jr50 for my daughter. It ran fine but needed a little TLC. It was leaking oil around the bottom of the head, so I replaced the gasket and put new rings in. Put it back together, started it up, let it warm up, then rode it around the yard. When I pulled back in the garage it died. Now I can't get it to run. It has spark, fuel and compression, but doesn't even act like it wants to start. I've had the carb out and cleaned everything. Air filter is good appears to have some fuel blowback in it. The plug is pretty saturated after trying to kick it. Is it something to do with the timing?

 

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Sakuraba

Member

Jul 15, 2007

5

0

• Jul 16, 2007

• Thread starter
• #2

Man, can anyone help me? The shop is closed for a week.

 

Vic

***** freak.

LIFETIME SPONSOR

May 5, 2000

4,008

0

• Jul 16, 2007

• #3

You might have a leaking crank seal- allowing transmission oil into the crankcase.

I'd start with trying a new plug, though. They can spark when you test them, but still not produce enough to start the engine.

You could try celaning the old plug with WD-40 and blowing it dry with compressed air, if you can't get a new one right away.

 

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Sakuraba

Member

Jul 15, 2007

5

0

• Jul 16, 2007

• Thread starter
• #4

Vic said:

You might have a leaking crank seal- allowing transmission oil into the crankcase.

I'd start with trying a new plug, though. They can spark when you test them, but still not produce enough to start the engine.

You could try celaning the old plug with WD-40 and blowing it dry with compressed air, if you can't get a new one right away.

Click to expand...

I have 4 plugs for it. The origional one that was in it, I replaced it when I bought the bike, and I just bought 2 new ones. After having this problem, I let the bike sit for a week. I decided I was going to try and fix it again Friday. I pulled the carb and cleaned it, put it back on and the bike started. Had to feather the throttle to keep it running, once it got warm, it wouldn't start after that. Bike ran almost perfect before I replaced the rings and gaskets.

 

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SHSPVR

Member

Oct 24, 2006

200

0

• Jul 16, 2007

• #5

Sakuraba jr 50 dual ring did put them on rigth.
Try swaping the ring around

 

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SteveinSpringHill

Member

Jul 4, 2006

117

0

• Jul 17, 2007

• #6

Pull the silencer insert out.

 

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flyingfuzzball

Member

May 10, 2007

957

0

• Jul 17, 2007

• #7

SteveinSpringHill said:

Pull the silencer insert out.

Click to expand...

what good will that do?