SBT Jetski Engines, Parts & Accessories

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  1. #1
    Joined
    Oct 2013
    From
    King George VA
    Posts
    7

    Default Yamaha 2003 800xlt engine failure problem

    Hi I have a Yamaha 2003 800 XLT that I have had two engine failures in the last 2 1/2 years. I am going to order another engine from SBT but would like to know what the problem is. My current engine had one cylinder spark plug gap which was smashed close . It has 30 psi while the front is 120 psi. I used pre-mis at 40:1. Do I just have bad luck?

  2. #2
    Joined
    Jun 2016
    From
    Clearwater, Florida
    Posts
    278

    Default Re: Yamaha 2003 800xlt engine failure problem

    Quote Originally Posted by dlane123 View Post
    Hi I have a Yamaha 2003 800 XLT that I have had two engine failures in the last 2 1/2 years. I am going to order another engine from SBT but would like to know what the problem is. My current engine had one cylinder spark plug gap which was smashed close . It has 30 psi while the front is 120 psi. I used pre-mis at 40:1. Do I just have bad luck?
    I do not believe in good/bad luck. There is a cause for the failure. The only way to know what the failure is would be to take the engine apart and examine it.

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