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Post by jmicester on Jun 9, 2014 22:23:55 GMT -6
Well with oil down there and still no compression points to the VALVES. So take the valve cover off and look at the valves and springs and see if anything is broke may want to take a couple of pictures and put them up here so I can see the valves as well. Then bring it up to TOP DEAD CENTER again and check the gaps. .004 inchs on both of them, put the spark plug back in and see if it acts better. But the noise sure sounds like the STARTER CLUTCH, do you have a KICK STARTER on it if so you may want to try starting using the KICKSTARTER. Alleyoop Ok I'll check the valves. I do have a kick starter but its broken.  I thought it could be the starter aswell but then I thought a starter going bad wouldn't kill the engine would it?? |
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Post by alleyoop on Jun 9, 2014 22:38:38 GMT -6
No a bad starter will not kill the motor that is just used to start it by turning the STARTER CLUTCH inside the right side of the motor behind the stator which is behind the flywheel. And to get to it you have to take the Flywheel off the Stator then about 5 bolts holding the right cover of the motor. This is what the STARTER CLUTCH LOOKS like and what is behind the right motor plate. Alleyoop  ON THE OTHER SIDE OF THE GEAR HELD ON WITH THE 3 BOLTS YOU SE IS THE ACTUAL STARTER CLUTCH:  |
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Post by jmicester on Jun 9, 2014 23:47:07 GMT -6
I adjusted my valves And the bottom valve was closed so I set it to .004 After that I did the finger test again and still nothing! Sorry I'n still a tad confused. Would a bad starter clutch be responsible for the motor all of a sudden dying then not for it not to start up? If so how would I tell is gone bad? Thanks! |
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Post by alleyoop on Jun 10, 2014 0:04:16 GMT -6
No it would not but you asked about the noise and I think its the starter clutch. When it died on you where you at WIDE OPEN THROTTLE or how did it happen.
Since you say you have SPARK check if its a fuel problem it may be clogged or the PETCOCK not allowing fuel to flow to the carb(SO TAKE THE FUEL HOSE OFF THE CARB and put it in a cup and crank the motor and see if fuel comes out. If it does then take the VACUUM LINE going to the PETCOCK or the carbs RIGHT SIDE and pour a tiny bit of gas and hold it up so it flows straight into the intake and reconnect and see if it fires. But with no compression something in the motor is not right, could be a hole in the piston with zero compression.
One more thing check the timing bring it up to TOP DEAD CENTER like your going to adjust the valves and take a picture of the CAM SPROCKET and the FLYWHEEL I want to see if maybe jumped timing.
BUT I NEED PICTURES or VIDEO of how you set it up to adjust the valves so VIDO the CAM AREA and the FLYWHEEL so I can see the timing marks to tell if it is off. I can only guess without VIDEO or PICTURES of how it is set.
So you have to help me see what is what.
Alleyoop
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Post by jmicester on Jun 10, 2014 0:28:58 GMT -6
When the scooter died I was wot accelerating at about 30-35mph. Then I tried to Restart it But it wouldn't restart and made the noise of the flywheel just spinning.
I'll try those things you mentioned tomorrow after work and I also will take pictures. Thanks for your help.
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Post by jmicester on Jun 10, 2014 19:01:39 GMT -6
No it would not but you asked about the noise and I think its the starter clutch. When it died on you where you at WIDE OPEN THROTTLE or how did it happen. Since you say you have SPARK check if its a fuel problem it may be clogged or the PETCOCK not allowing fuel to flow to the carb(SO TAKE THE FUEL HOSE OFF THE CARB and put it in a cup and crank the motor and see if fuel comes out. If it does then take the VACUUM LINE going to the PETCOCK or the carbs RIGHT SIDE and pour a tiny bit of gas and hold it up so it flows straight into the intake and reconnect and see if it fires. But with no compression something in the motor is not right, could be a hole in the piston with zero compression. One more thing check the timing bring it up to TOP DEAD CENTER like your going to adjust the valves and take a picture of the CAM SPROCKET and the FLYWHEEL I want to see if maybe jumped timing. BUT I NEED PICTURES or VIDEO of how you set it up to adjust the valves so VIDO the CAM AREA and the FLYWHEEL so I can see the timing marks to tell if it is off. I can only guess without VIDEO or PICTURES of how it is set. So you have to help me see what is what. Alleyoop Here the videos of the flywheel and cam sprockets. I'm starting to believe it an engine issue! |
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Post by alleyoop on Jun 10, 2014 19:26:05 GMT -6
Well the timing looks good, what I do not see is OIL around the head by the rockers and cam and chain every thing looks dry?
IS there any oil up in there usually it is all oily and oil sitting at the bottom there. If no oil then that noise maybe the chain on the pump or the pump itself.
Alleyoop
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Post by alleyoop on Jun 10, 2014 19:36:07 GMT -6
With the valve cover off get a towel or something and hold it under by the head and crank it and see if oil squirts into the head.
Alleyoop
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Post by jmicester on Jun 10, 2014 19:52:05 GMT -6
With the valve cover off get a towel or something and hold it under by the head and crank it and see if oil squirts into the head. Alleyoop I cranked the engine and oil did come out. |
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Post by alleyoop on Jun 10, 2014 19:55:34 GMT -6
Well that is good because It looked like everything was dry no oil anywhere I also noticed the valve arms looked burnt to me but that could just be something else. When you cranked it did you see the valves moving up and down good?
Alleyoop
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Post by jmicester on Jun 10, 2014 20:01:26 GMT -6
Yes the seemed to be moving fine.
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Post by alleyoop on Jun 10, 2014 20:09:51 GMT -6
Well I have to agree with you it is internal and it I would suspect the piston has a crack or a hole in it if you have zero compression. So you will have to take the 4 bolts on the head off and cam pull it off to check the piston. BUT if you do that before you loosen anything LINE IT UP as if your going to adjust the valves like in the first VIDEO with the timing on the flywheel and cam sprocket. THEN PUT A MARK ON THE CAM SPROCKET and CHAIN like this so when you put it back together you will not be off on the timing you will be right on. Alleyoop And also you can mark your flywheel but as in your picture the case pointer points to the LINE before the "T".  |
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Post by jmicester on Jun 10, 2014 20:34:56 GMT -6
Well I have to agree with you it is internal and it I would suspect the piston has a crack or a hole in it if you have zero compression. So you will have to take the 4 bolts on the head off and cam pull it off to check the piston. BUT if you do that before you loosen anything LINE IT UP as if your going to adjust the valves like in the first VIDEO with the timing on the flywheel and cam sprocket. THEN PUT A MARK ON THE CAM SPROCKET and CHAIN like this so when you put it back together you will not be off on the timing you will be right on. Alleyoop And also you can mark your flywheel but as in your picture the case pointer points to the LINE before the "T". Ok I will take off the head.is there anything else I may be looking for besides a messed up piston?? |
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Post by alleyoop on Jun 10, 2014 20:42:42 GMT -6
Yea the rings on the piston but to see those you will have to take the JUG out as well and expose the piston and crank arm. Now if you have to do all this and find broke rings you will also see scrap marks on the side of the walls of the JUG and in that case you might just get a new top end. But lets check it out first. Alleyoop If you need help in the tear down here is a COMPLETE TEAR DOWN OF A MOTOR AND PUT BACK TOGETHER with really nice clear pictures: scooterdoc.proboards.com/thread/6884/gy6-project |
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Post by jmicester on Jun 10, 2014 21:11:25 GMT -6
Now that you mention it when I took out my spark plug after the scooter died it look distorted. So it may be a piston issue.
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..BAD TO THE BONE..