runs hot

redneck95 · 07-17-2010, 04:06 PM

my 95 cc runs good when cold but when its heats up it has a little ting but motar has been all rebuilt and help with what could cause these problems

papaw · 07-17-2010, 04:28 PM

A little more info please is it a ping ? Does it sound like a valve?

jiminpa · 07-17-2010, 06:22 PM

I am not sure how you adjust the timing on these carts, but, in general, if your timing is too far advanced, it will "ping" (which is really a early detonation in your combustion chamber) under acceleration. That can also cause a engine to run hot, esp. an air cooled engine in hot weather.
Did you set the timing a little advanced looking for better performance? A little can help, too much will give you poor performance and it can run hot or damage your motor.

scottyb · 07-17-2010, 06:32 PM

These motors have no timing advance system ...they are like a lawn mower engine.

papaw · 07-17-2010, 08:32 PM

Could it be running to lean?

jiminpa · 07-17-2010, 10:48 PM

or a spark plug with the wrong heat range, did you up your heat range on your plug? I don't think it would ping directly from that, but, once the internal temp started to get too high, you could start to get predetonation simply from the extra heat combined with the compression.
How about lots of weed seeds or dust plugging air flow over cooling fins?
Be careful, I would not run this much till you resolve it, you could mess up that motor faster then you think running hot.

redneck95 · 07-20-2010, 05:43 PM

hey thanks but i can drive it for about 10 minates then it will start losing power slowing way down and about after that 10 minates thats the ping sound starts it got new valves wich ive been told are to tight but i dont know? the timing on both gears are on each arrow when we put it back togather.plz help wich uv helped a bunch so far... thanks

jiminpa · 07-20-2010, 06:05 PM

iF YOU ARE RUNNING IT HOT TILL IT STARTS TO LOOSE POWER YOU ARE GOING TO KILL THAT MOTOR! also, better to run with valve lash too loose then too tight, esp on the exhaust side, you could burn a valve, you would also show loss of power as it got hot and the valve stem got just a tiny bit longer because of the heat, and gave you even less clearance. I don't know what the valve lash is on these, but, give yourself a few extra thousands and try it. also, what about the other questions we asked?

redneck95 · 07-20-2010, 06:13 PM

no i prob aint got the right plug in it

burdawg2 · 07-26-2010, 07:02 PM

valves should be set at .005 at TDC

07-17-2010, 04:06 PM	#1
redneck95 Getting Wild Join Date: Jan 2010 Location: lake city Posts: 88	runs hot my 95 cc runs good when cold but when its heats up it has a little ting but motar has been all rebuilt and help with what could cause these problems

07-17-2010, 04:28 PM	#2
papaw Gone Wild Join Date: Apr 2010 Location: Indiana Posts: 165	Re: runs hot A little more info please is it a ping ? Does it sound like a valve?

07-17-2010, 06:22 PM	#3
jiminpa Gone Wild Join Date: Jun 2010 Location: Snowy NW PA Posts: 275	Re: runs hot I am not sure how you adjust the timing on these carts, but, in general, if your timing is too far advanced, it will "ping" (which is really a early detonation in your combustion chamber) under acceleration. That can also cause a engine to run hot, esp. an air cooled engine in hot weather. Did you set the timing a little advanced looking for better performance? A little can help, too much will give you poor performance and it can run hot or damage your motor.

07-17-2010, 06:32 PM	#4
scottyb Happy Carting Join Date: Dec 2007 Location: Southern California Posts: 73,408	Re: runs hot These motors have no timing advance system ...they are like a lawn mower engine.

07-17-2010, 08:32 PM	#5
papaw Gone Wild Join Date: Apr 2010 Location: Indiana Posts: 165	Re: runs hot Could it be running to lean?

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07-17-2010, 10:48 PM	#6
jiminpa Gone Wild Join Date: Jun 2010 Location: Snowy NW PA Posts: 275	Re: runs hot or a spark plug with the wrong heat range, did you up your heat range on your plug? I don't think it would ping directly from that, but, once the internal temp started to get too high, you could start to get predetonation simply from the extra heat combined with the compression. How about lots of weed seeds or dust plugging air flow over cooling fins? Be careful, I would not run this much till you resolve it, you could mess up that motor faster then you think running hot.

07-20-2010, 05:43 PM	#7
redneck95 Getting Wild Join Date: Jan 2010 Location: lake city Posts: 88	Re: runs hot hey thanks but i can drive it for about 10 minates then it will start losing power slowing way down and about after that 10 minates thats the ping sound starts it got new valves wich ive been told are to tight but i dont know? the timing on both gears are on each arrow when we put it back togather.plz help wich uv helped a bunch so far... thanks

07-20-2010, 06:05 PM	#8
jiminpa Gone Wild Join Date: Jun 2010 Location: Snowy NW PA Posts: 275	Re: runs hot iF YOU ARE RUNNING IT HOT TILL IT STARTS TO LOOSE POWER YOU ARE GOING TO KILL THAT MOTOR! also, better to run with valve lash too loose then too tight, esp on the exhaust side, you could burn a valve, you would also show loss of power as it got hot and the valve stem got just a tiny bit longer because of the heat, and gave you even less clearance. I don't know what the valve lash is on these, but, give yourself a few extra thousands and try it. also, what about the other questions we asked?

07-20-2010, 06:13 PM	#9
redneck95 Getting Wild Join Date: Jan 2010 Location: lake city Posts: 88	Re: runs hot no i prob aint got the right plug in it

07-26-2010, 07:02 PM	#10
burdawg2 Not Yet Wild Join Date: Mar 2010 Location: wellsburg,ny Posts: 14	Re: runs hot valves should be set at .005 at TDC

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