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    8HP Yamaha f8SMHB (4-Stroke) Compression Test

    I thought I would throw this in may help may not. If you put like a Philip screw driver in your spark plug wire and crank it how far will the spark jump? I had a outboard once that had fuel and spark but the spark wouldn’t jump more than the spark plug gap. It should jump at least 3/8 inch or...
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    Yamaha HPDI 200 Problem Please Help!

    I tried the remote fuel tank. Still don’t run. I have tried a different injector drive module and a different ECU I have checked wires .
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    Yamaha HPDI 200 Problem Please Help!

    I will try the remote fuel tank. The one thing I don’t understand is why it will run some what in gear with some throttle but not at all with throttle only. I know the last thing I do to it will fix it . LOL
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    Yamaha HPDI 200 Problem Please Help!

    What is strange about it it was running fine. Scooting across the water at 4800 rpm the just like pulling the throttle back down to 1800 . It would start and run fine but only 1800 rpm. But then it got to where it won’t idle. If I try to throttle it up in neutral it dies but if I hurry up and...
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    Yamaha HPDI 200 Problem Please Help!

    I don’t know if you will even read this but I am giving it a try. Have you figured out your problem? I a m having the same problem. My first Yamaha and my last!!!!
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    2003 225 HPDI not getting on plane

    Does it have a little switch on the shift linkage on the right side of engine. If it’s like the 200 hp it only idles on 4 cylinders then when put in gear goes to all 6. If switch is bad it won’t go to all 6.
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