Need help figuring out what is wrong with my HSUN 200GY - Page 2

TeamCheap · 05-01-2009, 10:38 PM

I think I'd do a compression test and also remove the valve cover and have a look in there.

Is that engine an OHC or pushrod ?

If it has suffered major damage such as a broken connecting rod or dropped a valve and munched on it for a bit then I'd say just buy a NEW engine and ride.(but thats just me)

culcune · 05-01-2009, 11:09 PM

Quote:

Originally Posted by TeamCheap

If it has suffered major damage such as a broken connecting rod or dropped a valve and munched on it for a bit then I'd say just buy a NEW engine and ride.(but thats just me)

T-motorsports has the Lifan engines for $320 plus shipping... Or the wrecked Jetmoto that Fastdoc has access to... Major engine damage can be fixed by simply replacing the engine. I had a Lifan engine installed in my Jetmoto (Jetmoto, who uses Zongshen engines) with some minor tweaking. I had a guy in Mexico install it and did a good job, but he didn't cut the clutch cable to the proper length, so it felt like the tranny went out a little while later, but its a long, sad story, but it is possible to install a different brand engine as they are similar enough to each other.

pizzarider · 05-02-2009, 01:12 AM

It just breaks my heart to let that engine go. I put so much into breaking it in properly and everything. Oil changes every week etc. Do any of you know about sunl waranties? The engine is covered for a year and ive only had the bike for 9 months. Also, anyone know of a HSUN/SUNL repair shop in southern IN or Northern KY? Thanks! -Cory

katoranger · 05-02-2009, 03:52 PM

Quote:

Originally Posted by pizzarider

It just breaks my heart to let that engine go. I put so much into breaking it in properly and everything. Oil changes every week etc. Do any of you know about sunl waranties? The engine is covered for a year and ive only had the bike for 9 months. Also, anyone know of a HSUN/SUNL repair shop in southern IN or Northern KY? Thanks! -Cory

Good luck with a warranty.

I think you next step is the compression test. Also remove the valve cover and check to see if valves are moving.

Repair or replace. I would replace. The price of parts will add up to close to what the new engine will cost. Plus the time to fix.

A replacement engine will take a couple hours to swap in.

By the way. How many miles did you get on it?

Allen

pizzarider · 05-03-2009, 01:49 AM

Ok, I took out spark plug and placed my thumb over the spark plug hole and kicked the kick start but I didnt feel much pressure. I could tell that something is moving because the valves move up and down but when I shine my flashligh down in the spark plug hole it doesnt look like piston is moving. If I take my thumb off the hole i can feel a bit of air come out when I kick the kick start. -Cory

TeamCheap · 05-03-2009, 05:59 AM

I wish you lived close to me I have a borescope that would allow us to look right down in the cylinder.

If your feeling a little puff of air on your thumb when you turn it over then I'd think the piston is moving up and down but maybe it is damaged or one/both of the valves.

If you really want to get into it and see whats up take the head off the engine that will allow you to see pretty much everything as far as the piston, valves, and cylinder.
I myself wouldnt take the head off until I was sure of the status of the valves and I'd of course take peek into the cylinder with the scope.

If the engine is damaged then it'll have to come out of the frame anyway and taking apart a damaged engine is a bit of fun but a bummer also.

If any one of the piston, connecting rod, cylinder or head is damaged I'd look to getting a new engine depending on the exact extent of the damage.

I have seen piston, cylinder, gasket and ring sets for sale but at about 1/4 to 1/2 the cost of a new engine so I'd just get the new engine and be done.

forchetto · 05-03-2009, 06:12 AM

Quote:

Originally Posted by TeamCheap

I have a borescope that would allow us to look right down in the cylinder.

A borescope eh?

Never heard of one till now and, being a tool junkie, I want one of those...

TeamCheap · 05-03-2009, 08:20 AM

Quote:

Originally Posted by forchetto

Quote:

Originally Posted by TeamCheap

I have a borescope that would allow us to look right down in the cylinder.

A borescope eh?

Never heard of one till now and, being a tool junkie, I want one of those...

They make rigid, flexible and I think a somewhat steerable one and some can mount a camera on them and they have a tiny LED light.

Mine is a cheap flexible (TEAMCHEAP) one but it is better than none and I have used it on cars before.

forchetto · 05-03-2009, 01:05 PM

I found a few on ebay, some very expensive, with camera and LCD screen, some just simple optical ones. I've just bid for one of these.

Apparently they're similar to what proctologists use to look up your anus...

katoranger · 05-03-2009, 01:10 PM

pizzarider. Easy method to see if the piston comes up and down. Get a soda straw and place it in the spark plug hole. Kick it over slowly and see if the straw moves up and down.

The straw won't damage anything. If it doesn't move than the rod is broken.

Allen

pizzarider · 05-03-2009, 09:10 PM

Quote:

Originally Posted by katoranger

pizzarider. Easy method to see if the piston comes up and down. Get a soda straw and place it in the spark plug hole. Kick it over slowly and see if the straw moves up and down.

The straw won't damage anything. If it doesn't move than the rod is broken.

Allen

Ok, I tried this and the straw didnt move. How do I get into the engine to view the rod? I wont have $200 for a long time so I would like to try to fix this myself if possible. Thanks! -Cory

TeamCheap · 05-03-2009, 09:38 PM

You'll have more into fixing it than $200 bucks if the rod is broke which is what it sounds like if the piston isnt moving.

I havnt taken one of these engines apart but I'd guess they are like others in that you'll need to have the crank pulled/pressed to change the connecting rod or buy a new crank for it.

here are some links :
crankshafts

pistons

cylinders

Those links (all the same site) are just to show you some of the stuff you may/will need.
I have no idea of exactly what you have or if that site even has what you need but I thought it interesting to look at as it will give you an idea on costs.

A teardown of the engine and a list of needed items is the next move if your going to do it yourself but really just buying a new ready to go engine is far FAR easier and much quicker to do.

Here is an ebay deal that might work for you it has everything you'd need and then some.
Brand New! 200cc Engine Shifter Kart Zongshen Lifan NR

Plus this whole ordeal would also allow you to slap a 250cc engine in there if you wanted to.

SeerAtlas · 05-04-2009, 12:04 AM

That's not a bad price. I saw an importer offering Zong 250 motors with all black finish, fob china for 280. No idea of what the cost is for shipping. I think minimum purchase was ten.

seer

pizzarider · 05-04-2009, 02:21 AM

I found out what the problem is. My piston shattered on the inside. Looks like it was a crap piston but the connecting rod is just fine. I think I just need to replace the piston, rings, cylinder and flush the entire engine to get rid of loose bits of metal. Below are pictures.. Thanks for all of your help! -Cory
Piston
http://chinariders.net/gallery2/main...serialNumber=1
Cylinder
http://chinariders.net/gallery2/main...serialNumber=1
Connecting Rod
http://chinariders.net/gallery2/main...serialNumber=1

forchetto · 05-04-2009, 06:10 AM

The conrod looks as if it's bent on the third photo...

05-03-2009, 01:05 PM	#24
forchetto Join Date: Jul 2008 Location: Gijon, Asturias,Northern Spain Posts: 396	I found a few on ebay, some very expensive, with camera and LCD screen, some just simple optical ones. I've just bid for one of these. Apparently they're similar to what proctologists use to look up your anus... __________________ Jincheng Monkey JC50Q-7 (two of them) Skyteam Dax replica ST110-6 (two of them) Zongshen ZS125-43 Qingqi QM200GY-BA Super Motard Yamaha Virago XV1100 Triumph Bonneville SE Qingqi QM110GY PGO Bug rider 250 Buggy
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05-03-2009, 01:10 PM	#25
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	pizzarider. Easy method to see if the piston comes up and down. Get a soda straw and place it in the spark plug hole. Kick it over slowly and see if the straw moves up and down. The straw won't damage anything. If it doesn't move than the rod is broken. Allen __________________ You meet the nicest people on a Honda Clone.
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05-04-2009, 12:04 AM	#28
SeerAtlas Join Date: Apr 2009 Posts: 770	That's not a bad price. I saw an importer offering Zong 250 motors with all black finish, fob china for 280. No idea of what the cost is for shipping. I think minimum purchase was ten. seer __________________ Seer's First LAW-"FLY THE PLANE!", fail that, and nothing else matters. 12th Law- Consider what marvels you might do if only you had tomorrow to live over again. Third Law-When someone tells you some thing "Can't Be Done", what they're really saying is They can't do it!!14th Law-Just because something "IS", doesn't necessarily mean it SHOULD be.. Eighth Law-The only true personal security is anonymity.Ninth Law-Humans tend to learn very little when speaking.10th Law-Some lives ARE worth taking
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05-04-2009, 06:10 AM	#30
forchetto Join Date: Jul 2008 Location: Gijon, Asturias,Northern Spain Posts: 396	The conrod looks as if it's bent on the third photo... __________________ Jincheng Monkey JC50Q-7 (two of them) Skyteam Dax replica ST110-6 (two of them) Zongshen ZS125-43 Qingqi QM200GY-BA Super Motard Yamaha Virago XV1100 Triumph Bonneville SE Qingqi QM110GY PGO Bug rider 250 Buggy
	0

05-01-2009, 10:38 PM	#16
TeamCheap Join Date: Jun 2006 Location: directly under the earths sun............NOW Posts: 2,302	I think I'd do a compression test and also remove the valve cover and have a look in there. Is that engine an OHC or pushrod ? If it has suffered major damage such as a broken connecting rod or dropped a valve and munched on it for a bit then I'd say just buy a NEW engine and ride.(but thats just me)
	0

05-02-2009, 01:12 AM	#18
pizzarider Join Date: Jun 2008 Posts: 144	It just breaks my heart to let that engine go. I put so much into breaking it in properly and everything. Oil changes every week etc. Do any of you know about sunl waranties? The engine is covered for a year and ive only had the bike for 9 months. Also, anyone know of a HSUN/SUNL repair shop in southern IN or Northern KY? Thanks! -Cory
	0

05-03-2009, 01:49 AM	#20
pizzarider Join Date: Jun 2008 Posts: 144	Ok, I took out spark plug and placed my thumb over the spark plug hole and kicked the kick start but I didnt feel much pressure. I could tell that something is moving because the valves move up and down but when I shine my flashligh down in the spark plug hole it doesnt look like piston is moving. If I take my thumb off the hole i can feel a bit of air come out when I kick the kick start. -Cory
	0

05-03-2009, 05:59 AM	#21
TeamCheap Join Date: Jun 2006 Location: directly under the earths sun............NOW Posts: 2,302	I wish you lived close to me I have a borescope that would allow us to look right down in the cylinder. If your feeling a little puff of air on your thumb when you turn it over then I'd think the piston is moving up and down but maybe it is damaged or one/both of the valves. If you really want to get into it and see whats up take the head off the engine that will allow you to see pretty much everything as far as the piston, valves, and cylinder. I myself wouldnt take the head off until I was sure of the status of the valves and I'd of course take peek into the cylinder with the scope. If the engine is damaged then it'll have to come out of the frame anyway and taking apart a damaged engine is a bit of fun but a bummer also. If any one of the piston, connecting rod, cylinder or head is damaged I'd look to getting a new engine depending on the exact extent of the damage. I have seen piston, cylinder, gasket and ring sets for sale but at about 1/4 to 1/2 the cost of a new engine so I'd just get the new engine and be done.
	0

05-03-2009, 09:38 PM	#27
TeamCheap Join Date: Jun 2006 Location: directly under the earths sun............NOW Posts: 2,302	You'll have more into fixing it than $200 bucks if the rod is broke which is what it sounds like if the piston isnt moving. I havnt taken one of these engines apart but I'd guess they are like others in that you'll need to have the crank pulled/pressed to change the connecting rod or buy a new crank for it. here are some links : crankshafts pistons cylinders Those links (all the same site) are just to show you some of the stuff you may/will need. I have no idea of exactly what you have or if that site even has what you need but I thought it interesting to look at as it will give you an idea on costs. A teardown of the engine and a list of needed items is the next move if your going to do it yourself but really just buying a new ready to go engine is far FAR easier and much quicker to do. Here is an ebay deal that might work for you it has everything you'd need and then some. Brand New! 200cc Engine Shifter Kart Zongshen Lifan NR Plus this whole ordeal would also allow you to slap a 250cc engine in there if you wanted to.
	0

05-04-2009, 02:21 AM	#29
pizzarider Join Date: Jun 2008 Posts: 144	I found out what the problem is. My piston shattered on the inside. Looks like it was a crap piston but the connecting rod is just fine. I think I just need to replace the piston, rings, cylinder and flush the entire engine to get rid of loose bits of metal. Below are pictures.. Thanks for all of your help! -Cory Piston http://chinariders.net/gallery2/main...serialNumber=1 Cylinder http://chinariders.net/gallery2/main...serialNumber=1 Connecting Rod http://chinariders.net/gallery2/main...serialNumber=1
	0