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I am looking to buy a 1998 450 foreman 4x4 for 1,000 it has been rolled over upside down in water and still starts and runs great but after it warms up it starts smoking grey. My ? Is, is it a good buy and can it be fixed cheaply and what exactly will it take.
 

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I am looking to buy a 1998 450 foreman 4x4 for 1,000 it has been rolled over upside down in water and still starts and runs great but after it warms up it starts smoking grey. My ? Is, is it a good buy and can it be fixed cheaply and what exactly will it take.
Welcome to the forums. What does the oil look like in it? It sounds like it might still have water in the oil.
 

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Well I don't own it yet but that will b my first task of things to check, I will change the oil completely but I also don't know much about them and do not know how to go about changing the oil. Also will water in the oil cause it to slietly lose compression
 

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You may have to change the oil multiple times to get all the water out. It's easy to change the oil. You just find the drain plug on the bottom of the engine, take it out until all the oil drains out and then put it back in. Then, just fill the engine back up with oil until it's to the full mark on the dipstick.

You'll probably have to take the carb off and clean it too. Water can get trapped in the carb bowl and in the rubber vacuum piston in the top of the carb, causing it to loose power.
 
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