proper way to start a jet
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proper way to start a jet

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    Default proper way to start a jet

    Hi everyone. Im hoping the gurus can help me out with the proper way to start a jet boat. over the years, I've owned a few jet boats but have seen different types of ways to start the boat while on the trailer. I've seen one person hook it up to the engine while another put the water hose through the pump to not eat up the wear ring. I'm wondering what the proper way is to start a jet boat

    Thanks in advance

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    Senior Member 67weiman's Avatar
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    The proper way to start a jet on the trailer is not to start it on the trailer.

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    x2 I've always heard not only can you damage the pump, but revving motor out of the water can do damage to hull.

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    I'm No Expert Shaun's Avatar
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    If u have the ability to disconnect the drive line then do it. Then just run water through the engine.

    If u can't disconnect the driveline you have two things to worry about. The first is the dirt/pebbles/rocks that jump up into the intake while your towing. If you always cover your intake while towing then nothing to worry about. If not then I'm recommend you run water through the intake at the same time. Before I had a jetway I used a T splitter and would run water into my intake with one line and the other into the engine. The other thing u have to watch us the packing seal on the pump, it gets lubricated by the water when the boats in the water. Don't run the boat longer than you really need too and gives good breaks in between runs, and try to run the rpms as low as possible.

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    Senior Member SoldHondaBoughtHondo's Avatar
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    You are never supposed to run one on the trailer....
    That said....
    IMHO
    I work in a jet boat shop and we do it all the time....maybe 10 seconds dry and for as long as necessary on the hose to keep motor cool. The only real issue would be sand/rocks in the pump and avoid
    unnecessary rpm.......
    "A liberal paradise would be a place where everybody has
    guaranteed employment, free comprehensive healthcare, free
    education, free food, free housing, free clothing, free
    utilities, and only law enforcement has guns. And believe it or
    not, such a place does, indeed, exist: It's called prison."

    Sheriff Joe Arpaio
    Maricopa County Sheriff's Office

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    1977 Custom Sprint Jet wickedsanger's Avatar
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    I have a hose adapter that I put on the end of the water hose. Insert it into the water dump on the back. The water will go thru the system backwards and come out the pump. Only run it for a few seconds, or no longer than you have too. This way, the water will get onto the wear ring.This has worked for me for years, and I have never hurt anything. I have a jet-a-way now. So, I just dissengage the driveline and run water thru the motor. Hope this helps and Good Luck!!! Tim
    Wickedsanger... Gettin it done with a Small Block!!!!

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    About 500' AGL MudPumper's Avatar
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    This thread again..... Amazing.

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    Senior Member Futs's Avatar
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    Quote Originally Posted by MudPumper View Post
    This thread again..... Amazing.
    once every 6 months for the last 10 years...lol

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    I do all my own stunts. white tortilla's Avatar
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    1. turn over motor with ignition off until you build oil pressure and fuel pressure.

    2. turn ignition on, hold throttle wide open and fire up. hold wide open for 30-45 seconds.

    3. repeat until oil pressure drops and stays at 0

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    Senior Member Futs's Avatar
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    Quote Originally Posted by white tortilla View Post
    1. turn over motor with ignition off until you build oil pressure and fuel pressure.

    2.turn ignition on, hold throttle wide open and fire up. hold wide open for 30-45 seconds.

    3. repeat until oil pressure drops and stays at 0
    Hmmm. That's why my oil presure is so low..........3 am limiter check!!!!!!!

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    Senior Member SuperJet's Avatar
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    Quote Originally Posted by white tortilla View Post
    1. turn over motor with ignition off until you build oil pressure and fuel pressure.

    2. turn ignition on, hold throttle wide open and fire up. hold wide open for 30-45 seconds.

    3. repeat until oil pressure drops and stays at 0
    Damn Grady you sher are a genius. thats the best way I have heard of yet.
    Quote Originally Posted by cordog009 View Post
    Nitrous is like a really hot chick with an STD...you know you wanna hit it, you're just afraid of the consequences

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    Senior Member Need4Speed77's Avatar
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    Quote Originally Posted by white tortilla View Post
    1. turn over motor with ignition off until you build oil pressure and fuel pressure.

    2. turn ignition on, hold throttle wide open and fire up. hold wide open for 30-45 seconds.

    3. repeat until oil pressure drops and stays at 0
    I have a question. I did EXACTLY what you said in your post and heard a very loud bang. Not sure what it was so I turned the ignition off and started from #1. Again step by step followed your instruction but this time it took FOREVER to start and when it did I heard a disturbing grinding noise but still revved it to wide open. This time it stalled. Do you think I got some of those rocks or dirt in the pump like stated in a previous post? The noised couldn't be the motor because I followed your instructions to a "TEE." What do you think?

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    Senior Member zacho!'s Avatar
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    I start mine all the time on the trailer, but the last time on the lake it blew out a brand new valve cover gasket and after a leakdown test, everything is good minus#7. The wear ring and Impy still look new, but I'm pretty sure dry starts ruined my #7 cylinder...

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    Senior Member SoldHondaBoughtHondo's Avatar
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    Quote Originally Posted by Need4Speed77 View Post
    I have a question. I did EXACTLY what you said in your post and heard a very loud bang. Not sure what it was so I turned the ignition off and started from #1. Again step by step followed your instruction but this time it took FOREVER to start and when it did I heard a disturbing grinding noise but still revved it to wide open. This time it stalled. Do you think I got some of those rocks or dirt in the pump like stated in a previous post? The noised couldn't be the motor because I followed your instructions to a "TEE." What do you think?

    You mean like
    Suck
    Bang
    Flash?
    I think that means you have a yo-man in your intake
    "A liberal paradise would be a place where everybody has
    guaranteed employment, free comprehensive healthcare, free
    education, free food, free housing, free clothing, free
    utilities, and only law enforcement has guns. And believe it or
    not, such a place does, indeed, exist: It's called prison."

    Sheriff Joe Arpaio
    Maricopa County Sheriff's Office

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