If it has the (COP) Coil Over Plug ignition system, Single coil for each cylindder. Replacing the boot's between coil and plugs will remedy this. Engine light should come on, running a scantool on the diagnostic port (OBD2) will tell you what cyl. is misfiring" if you dont want to replace them all". The price for these are 7-10$ per boot. also ask parts store if non-conductive grease is required for your vehicle.
The cylinder numbers start from 1 to 4, front to back on passenger side, and 5 to 8 on the drivers side. If your engine has the plastic intake manifold and plastic thermostat housing, check for leaks if you keep getting a cyl. 5 misfire.
ChiDeager
if its on the inside of the cylinder, its a blown headgasket that's leaking your water/antifreeze.
The seals in the pump are leaking and the pump needs to be replaced.
Many things can cause a snowmobile engine to back fire. Ignition coils ( spark plugs, coils) or water in fuel. Check these and maybe it will solve your problems.
It's either not cooling enough or the drain is clogged. the water that is leaking from your a/c unit is humidity that has condensed on your evap coils. As air is passed thru the evap coils, heat and humidity are removed from said air.
There many be minuscule holes in the floor or walls that are leaking water. If they are not visible, it may be because they are underneath or behind furniture.
if its water cooled you have water in the oil ie; head gasket or liner leaking.
water could have gotten into the spark plug holes. water + spark= no good. Only a few spark plugs could be firing, take them out, and check for water.
It may be the wastes that the plugs attach to which are leaking. Also look around the perimeter of the sink is it well siliconed and no holes? It can seep through there.
You have a serious internal engine failure.
The heater coil is leaking. Water from the cooling system runs through the heater coil to heat the passenger compartment. Antifreeze is corrosive, some heater coils are thin.
a. With a hot nail, punch 4 identical small holes along a straight line on a large plastic bottle. b. Put a sticky tape on the holes to prevent water from leaking. fill the bottle with water. c. Now remove the sticky tape. Compare the trajectory of the water streams from the different holes. Why do you think water from the different holes have different trajectories? what does this indicate?
Normally waterpump's have two weep holes that will actually leak water if your pump is about to burn up.