04-16-2018, 01:14 AM | #1 |
Join Date: Apr 2018
Posts: 7
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Engine help please!
I took the front head of my bike to clean, clean cam and adjust valves. Now my bike sounds like this. Did i break it?
https://streamable.com/s/5uk3l/xkwypf |
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04-16-2018, 12:43 PM | #2 |
Join Date: Apr 2018
Posts: 7
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Can anyone help? Is timing off?
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04-16-2018, 01:20 PM | #3 |
Join Date: Nov 2017
Location: Marseille, France -> Conakry, Guinea
Posts: 1,481
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It sounds like there is either a vacuum leak somewhere, or a breather hose is unplugged. Do you feel any inordinate puffs of air anywhere? Also, you put a new exhaust gasket on it, yes?
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04-16-2018, 02:05 PM | #4 | |
Join Date: Apr 2018
Posts: 7
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Quote:
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04-16-2018, 02:47 PM | #5 |
Join Date: Apr 2018
Posts: 7
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I think its my intake. One of the top bolt that hold on the intake pipe was recently retapped. I sprayed carb starter on the spot and the RPM jumped up.
Can i use some high temp silicone to seal it? |
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04-16-2018, 02:52 PM | #6 |
Join Date: Jun 2011
Posts: 1,335
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You'll need to replace those parts. Silicone getting into the engine will be bad.
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04-16-2018, 03:05 PM | #7 |
Join Date: Apr 2018
Posts: 7
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Ok then, If it is confirmed the leak is do to the retapped intake bolt on the Cylinder Head. The only way is to replace the Cylinder Head Assembly?
and if so how do you measure valves to determine head size? 52.4mm or 54mm cylinder head |
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04-16-2018, 03:10 PM | #8 |
Join Date: Jun 2011
Posts: 1,335
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You can repair it with a helicoil kit or a time-sert kit that fits the thread size of the bolt that came out. You will need a small drill for the job and red high heat loctite. There are vids on youtube explaining how to do it.
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04-16-2018, 03:13 PM | #9 | |
Join Date: Apr 2018
Posts: 7
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Quote:
https://www.ebay.com/i/232101248895?chn=ps |
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04-16-2018, 03:24 PM | #10 |
Join Date: Jun 2011
Posts: 1,335
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Yes, if it's the same and for the same diameter cylinder. The valve size should be the same if it matches the cylinder size. You may need to measure your cylinder's inside bore to be sure.
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04-16-2018, 04:16 PM | #11 |
Join Date: Apr 2015
Location: Sudbury ,Ontario
Posts: 855
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It’s probably not leaking because of the threads as long as they are solid ,it’s more than likely the intake is cracked ,or the gasket is not sealing properly
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04-16-2018, 07:50 PM | #12 | |
Join Date: Apr 2018
Posts: 7
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Quote:
So i just put a little black high temp silicon around that bolt gap. Will see tomorrow. |
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04-16-2018, 08:38 PM | #13 |
Join Date: Apr 2015
Location: Sudbury ,Ontario
Posts: 855
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it Looks like there is a gap between the bolt head and the intake ,try a washer or two in there to take up that gap .Also ,you may try a thicker gasket or oring depending on what it has .
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04-16-2018, 08:41 PM | #14 |
Join Date: Dec 2017
Posts: 216
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That looks like a 125cc engine found on Taotao products. Probably a 54x54 square bore. Is that a Taotao Hellcat?
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04-16-2018, 08:53 PM | #15 |
Join Date: Feb 2008
Location: kingman az
Posts: 34
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Looks like your bolt is cross threaded. I would pull it and re- thread the hole to see if you can save it with out a heli-coil.
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