Started the quad , it has been running ok and now it has started smoking quite a lot , engine has just been rebuilt , and was running fine now all of a sudden this

[2015 Z Force 800 53/Trail EPS]

Because I see some of dissipating quickly like steam and because it came on all of a sudden I'm going to say its coolant and she has either blown the head gasket or developed a crack into the water jacket. Either way she's coming back apart.

Because I see some of dissipating quickly like steam and because it came on all of a sudden I'm going to say its coolant and she has either blown the head gasket or developed a crack into the water jacket. Either way she's coming back apart.

Any idea on what could have caused this as the engine has only just been rebuilt .

[2015 Z Force 800 53/Trail EPS]

Because I see some of dissipating quickly like steam and because it came on all of a sudden I'm going to say its coolant and she has either blown the head gasket or developed a crack into the water jacket. Either way she's coming back apart.

Any idea on what could have caused this as the engine has only just been rebuilt .

Well, normally a good mechanic will mill the decks to ensure they are flat, torque the head to spec. Then run it for two cycles then re-torque the head(s) again because sometimes they need it after a couple of cycles. Not everyone does and 90% of the time nothing happens...but 10% of the time..they have a problem. If it is coolant it will be under pressure pushing it way into the combustion chamber and when not being burned, it will be flowing downward past the piston into the oil which the pump will mix it in with the oil, pumping throughout the engine. When those beads of coolant get between the rod bearing and the crank during the power stroke, it vaporizes with micro explosions under the pressure scaring the crank surface and of course splattering the soft bearing surface. If your oil level is higher then it was and/or turning milky, this has already happened.   

Because I see some of dissipating quickly like steam and because it came on all of a sudden I'm going to say its coolant and she has either blown the head gasket or developed a crack into the water jacket. Either way she's coming back apart.

Any idea on what could have caused this as the engine has only just been rebuilt .

Well, normally a good mechanic will mill the decks to ensure they are flat, torque the head to spec. Then run it for two cycles then re-torque the head(s) again because sometimes they need it after a couple of cycles. Not everyone does and 90% of the time nothing happens...but 10% of the time..they have a problem. If it is coolant it will be under pressure pushing it way into the combustion chamber and when not being burned, it will be flowing downward past the piston into the oil which the pump will mix it in with the oil, pumping throughout the engine. When those beads of coolant get between the rod bearing and the crank during the power stroke, it vaporizes with micro explosions under the pressure scaring the crank surface and of course splattering the soft bearing surface. If your oil level is higher then it was and/or turning milky, this has already happened.

I have just checked the coolant bottle and it was more or less empty , it was full yesterday the temp gauge is full and flashing .

[2015 Z Force 800 53/Trail EPS]

Because I see some of dissipating quickly like steam and because it came on all of a sudden I'm going to say its coolant and she has either blown the head gasket or developed a crack into the water jacket. Either way she's coming back apart.

Any idea on what could have caused this as the engine has only just been rebuilt .

Well, normally a good mechanic will mill the decks to ensure they are flat, torque the head to spec. Then run it for two cycles then re-torque the head(s) again because sometimes they need it after a couple of cycles. Not everyone does and 90% of the time nothing happens...but 10% of the time..they have a problem. If it is coolant it will be under pressure pushing it way into the combustion chamber and when not being burned, it will be flowing downward past the piston into the oil which the pump will mix it in with the oil, pumping throughout the engine. When those beads of coolant get between the rod bearing and the crank during the power stroke, it vaporizes with micro explosions under the pressure scaring the crank surface and of course splattering the soft bearing surface. If your oil level is higher then it was and/or turning milky, this has already happened.

I have just checked the coolant bottle and it was more or less empty , it was full yesterday the temp gauge is full and flashing .

And the oil?

Because I see some of dissipating quickly like steam and because it came on all of a sudden I'm going to say its coolant and she has either blown the head gasket or developed a crack into the water jacket. Either way she's coming back apart.

Any idea on what could have caused this as the engine has only just been rebuilt .

Well, normally a good mechanic will mill the decks to ensure they are flat, torque the head to spec. Then run it for two cycles then re-torque the head(s) again because sometimes they need it after a couple of cycles. Not everyone does and 90% of the time nothing happens...but 10% of the time..they have a problem. If it is coolant it will be under pressure pushing it way into the combustion chamber and when not being burned, it will be flowing downward past the piston into the oil which the pump will mix it in with the oil, pumping throughout the engine. When those beads of coolant get between the rod bearing and the crank during the power stroke, it vaporizes with micro explosions under the pressure scaring the crank surface and of course splattering the soft bearing surface. If your oil level is higher then it was and/or turning milky, this has already happened.

I have just checked the coolant bottle and it was more or less empty , it was full yesterday the temp gauge is full and flashing .

And the oil?

I haven't checked the oil I will drop the oil tomorrow and check but what I have noticed is that while the bar on the temp gauge is full , the fan isn't even kicking in

Because I see some of dissipating quickly like steam and because it came on all of a sudden I'm going to say its coolant and she has either blown the head gasket or developed a crack into the water jacket. Either way she's coming back apart.

Any idea on what could have caused this as the engine has only just been rebuilt .

Well, normally a good mechanic will mill the decks to ensure they are flat, torque the head to spec. Then run it for two cycles then re-torque the head(s) again because sometimes they need it after a couple of cycles. Not everyone does and 90% of the time nothing happens...but 10% of the time..they have a problem. If it is coolant it will be under pressure pushing it way into the combustion chamber and when not being burned, it will be flowing downward past the piston into the oil which the pump will mix it in with the oil, pumping throughout the engine. When those beads of coolant get between the rod bearing and the crank during the power stroke, it vaporizes with micro explosions under the pressure scaring the crank surface and of course splattering the soft bearing surface. If your oil level is higher then it was and/or turning milky, this has already happened.

I have just checked the coolant bottle and it was more or less empty , it was full yesterday the temp gauge is full and flashing .

And the oil?

Just checked the oil and the oil is milky

OUCH. Id be talking to your mechanic for sure.

[2015 Z Force 800 53/Trail EPS]

OUCH. Id be talking to your mechanic for sure.

Yeah...that would be my first call...lol. Just pull the dipstick and check level and color. If its high and milky..she's gone. Someone owes you a new engine.

OUCH. Id be talking to your mechanic for sure.

Yeah...that would be my first call...lol. Just pull the dipstick and check level and color. If its high and milky..she's gone. Someone owes you a new engine.

So turns out that the quad overheated due to the fan not kicking in the thermo switch on the radiator had gone bad I had not noticed so it has been being used without the fan it's over heated and head gasket gone pop , stripped it down this afternoon ordered all the parts and now just got to wait .

Well, best of luck this time around.
Frustrating when somehting fails like that.

[2015 Z Force 800 53/Trail EPS]

Yeah, best of luck.

Well, best of luck this time around.
Frustrating when somehting fails like that.

Very frustrating , I jumped the fan cable that connects to the thermo switch in the radiator And the fan come on permanently so I know it's definitely the switch , hard to believe a little switch can cause a big issue well that plus me not noticing the temp gauge lol

OUCH. Id be talking to your mechanic for sure.

Yeah...that would be my first call...lol. Just pull the dipstick and check level and color. If its high and milky..she's gone. Someone owes you a new engine.

So I built her all back up new rings new gasket new coolant and oil and new thermo sensor she fired straight up gets to the 3 bars temp and fan kicks in , just sounds like a tapping noise if anyone can here it on the video could advise me I did set the valve clearances they are in range .