Another Blown Head Gasket!

[Netza]

I recently replaced all top end gaskets and seals on my 2005 Arctic Cat 500 (FIS Manual) and after about a month of smooth riding, I took it out for some heavier riding. It ran fine for a good four or five hours straight yesterday and I cranked it today and it's blowing antifreeze out of my tailpipe. What could be the cause of these blown gaskets?

[Tim-ANC]

Why did you change them in the first place? Did you torque everything correctly?

[Netza]

I had to replace the cylinder due to a hairline crack. After I replaced it, I ran the quad for a while and it blew the first head gasket. Could it be a cooling problem? I made sure to torque everything to proper specs.

[Tim-ANC]

I`m not familiar with your wheeler. Is your coolant circulating? Perhaps you have a clog. Is it a paper gasket? I use red rtv with paper gaskets.

[Netza]

There's no clog in my cooling system, my gaskets are metal and rubber. I'm thinking it could be my water pump.

[Tim-ANC]

Yeah, water pump would be my next guess. Are you getting an overheat light? Asking because if your thermostat is sticking closed, it might be boiling the water trapped in the engine ports. Steam is powerful. Easy to check. Suspend in a pot of water and heat. Should open before boiling.

[Netza]

I'm not getting any light, I'll check my thermostat tonight. Thanks for your help bud! I think I'll have the water pump looked at if the thermostat isn't bad.

[Tim-ANC]

I hope I have helped. If nothing else, keeping the thread alive might bring in someone experienced on AC.

[Netza]

The thermostat is good I'm going to have the head machined

[Tim-ANC]

That sounds like a good idea. Did someone suggest this to you?

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