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Discussion Starter · #1 ·
Hey all looked around the forum before posting, a great forum.

I'm doing work on my nephew's 2003 TRX 300EX. It ran great until we changed the oil. After that, it began to smoke. I used the oil and the exact amount of oil recommended in the manual. (10w40)

Question 1: Any ideas on why it would start after an oil change? The oil we took out had been there a while, it was black and thick. Looked a little milky so it also had some water in it.

Question 2: Is there a shop that rebuilds the heads? If I take it apart I believe I'll just have the head rebuilt and put in a new jug, piston etc.

Any suggestions are appreciated.
 
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