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Coolant My machine over heated and now I have coolant coming out of my exhaust.

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Hi Jim
Either you have a blown head gasket or a cracked block

Posted on May 03, 2013

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Posted on Jan 02, 2017

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Backfires when throttle released.


Hi Omer this is normal for many of these off road machines it is caused by cold air being vacuumed up the exhaust once the throttle is released. It causes noise like thunder where warm air collides with cold. If the exhaust system is good with no leaks thers nothing that can be done. Regards Jim...

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Polaris sportsman 500 HO shows hot check engin? what must i do


check your timing advance. It may be advanced a little too much. If that is okay, then make sure your spark plug is the proper one and not a sub. Most ATV's use DENSO plugs and these seem to work the best. (Having a spark with a higher heat range will cause the overheat condition). The other thing is your mixture... you may be running a tad rich.. lean it up 1/8 of a turn. Finally, remove the exhaust pipe and see if they is carbon build-up at the exhaust port... lean it over and remove all you can, careful not to allow any to fall into the engine. (Blocking the exhaust will cause a dramatic temperature increase.)

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What does the error code PO119 mean on my 2013 arctic cat 500 atv mean


From Repair Pal:

Auto Systems and Repair

Engine Coolant Temperature Circuit Intermittent Our emissions expert has put together the following information about the P0119 fault code. We have also included diagnostic procedures you can take to your repair shop if the mechanic is having difficulty analyzing the code.
OBD II Fault Code
  • OBD II P0119
Fault Code Definition
  • Engine Coolant Temperature Circuit Intermittent
What does Mean?The Engine Coolant Temperature Sensor measures the rise and fall of the Engine Coolant Temperature. This provides critical data needed for the Powertrain Control Module (PCM) to control the Air Fuel Ratio, the Ignition Spark Timing, the cooling fans, and many components of the Emissions Control Systems. The Engine Coolant Temperature Sensor converts the coolant temperature into a voltage that is high when the engine is cold and low as the engine warms up.
Code P0119 indicates an intermittent voltage input from the Coolant Temperature Circuit to the PCM.

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Extreme heat


oil cooled I believe your plugged aircooled your plugged, are you winding it out, exhaust plugged check those

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Kawasaki Mule bleeding coolant causing problems


Its probably the head gaskets. When you do the compression test its not running and the holes in the gasket could seal up. When it gets hot a hole could appear in the gasket or even a crack in the head.
Its clear from the rising coolant levels that something is putting pressure into the coolant, do the bubbles in the coolant smell of fuel?

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3 Answers

99 Polaris Sportsman 335, idles fine but when you give it gas it sounds like it bogging out. We have replaced plug and needle and seat. Runs even worse with the air cleaner on. Help


It sounds like the camshaft is going flat. The exhaust lobe on the camshaft is the first to wear. Basically the exhaust isn't opening the entire duration it needs to expel the exhaust. This will cause the bogging issue. Polaris uses an overhead camshaft, which fortunately, makes it easier to replace. To check the camshaft:
1. Remove spark plug
2. Remove the large bolt on top of the recoil starter
3. Rotate the engine with the pull rope until the "T" mark on the flywheel is visible through the hole the bolt was removed from
4. Remove 8 screws on valve cover, fuel tank removal is not necessary but gives you more room
5. Remove 4 bolts from rocker arms, lift rocker arms off camshaft
6. Rotate engine again with pull rope to inspect camshaft. The center of the camshaft is the exhaust lobe, intake lobes are on the outsides of cam. The exhaust lobe should be about the same height as the intake lobes, and will be noticeably flat
To replace the camshaft:
1. Remove camshaft gear access cover on right side of engine
2. Rotate engine again until the "T" mark on flywheel is visible, 2 dots on the camshaft gear should be at the top of the gear and will be parallel to the mating surface of the valve cover
3. Locate the chain tensioner, 2 small bolts holding tensioner to cylinder and 1 large bolt in the center. Remove the large center bolt to remove tension. There will be a spring and pin inside tensioner so be careful not to let it fly out.
4. Remove screws holding gear to camshaft, leave the gear on the chain
5. On the left side of the engine, clamp the coolant hose going into the thermostat cover
6. Remove thermostat cover, some coolant will come out but is ok
7. There will be a round cover on left side of engine with 3 screws, remove that cover and pull the camshaft out through that hole.
8. Install new camshaft, make sure the automatic decompression lever does not come out while handling. Keep pressure on decompression lever and hold cam so that the little ball inside the cam is facing downwards, this will help to keep the lever inside the cam
9. Install cover on the left side
10. Install cam gear on camshaft
11. Remove exhaust rocker arm from the shaft and replace with a new exhaust rocker arm
12. Install spring, pin, and bolt in tensioner once the gear is in place
13. Install rocker arms, set valve clearance to .006 in for intake and exhaust
14. Reinstall covers and thermostat cover
15. Option B is to take it to a Polaris dealer to avoid the hassle of trying to do it yourself!
Hope this helps, if you need any more assistance let me know, Daniel

Oct 04, 2011 | Polaris ATV

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