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Boat will NOT get on pad #11305682 12/27/15 02:39 PM
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team hooti josh Offline OP
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I have a nitro 591 with a merc optimax. If I'm by myself with no water in livewells it's ok getting on pad but not great. Add a co-angler full livewells you can literally just plow water and it will never break over. Luckily my buddies are cool with standing on the front deck to get the thing to break over and get on pad. I don't know if it's a prop issue or what. I need help with this one bad. Any ideas or good places to take it? I live in Arlington. Thanks guys!

Re: Boat will NOT get on pad [Re: team hooti josh] #11305707 12/27/15 02:54 PM
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team hooti josh Offline OP
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I am running a tempest 24 with no jack plate the boat is an 07

Re: Boat will NOT get on pad [Re: team hooti josh] #11305721 12/27/15 03:06 PM
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Try experimenting with your the prop ventilation plug configuration.


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Re: Boat will NOT get on pad [Re: team hooti josh] #11305932 12/27/15 05:35 PM
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team hooti josh Offline OP
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I have messed with those it doesn't do anything but blow out and rev up. I think I need a professional to look at it

Re: Boat will NOT get on pad [Re: team hooti josh] #11306150 12/27/15 07:21 PM
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fordnut Offline
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Nitro's are notorious for being underpowered. What horsepower are you running, rpm when you can get to wide open throttle? Just saw you are running a Tempest 24 you may need to drop to a 23.

Contact Steve he can make some recommendations. i.e. jackplate, prop, or just a prop rework.

I just had a jackplate put on my Triton as well as they reworked my prop adding cup and edging the blades. Mine liked like a 2x4. Hope this weather clears up, man I can't wait to get it out now.

BTW they are closed until Jan 4th for the holidays.

http://www.stevescustomprops.com/

Last edited by 2015fordnut; 12/27/15 07:23 PM.

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Re: Boat will NOT get on pad [Re: team hooti josh] #11306224 12/27/15 08:06 PM
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team hooti josh Offline OP
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It's a 150. Rpm at wot is around 5600 when on pad. Getting on pad though it just drags around 2800-3000 rpm

Re: Boat will NOT get on pad [Re: team hooti josh] #11306253 12/27/15 08:27 PM
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fordnut Offline
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Yea I'm running a 23 Tempest Plus. I've never had a problem getting my Triton on pad, it is a 18.6ft dual console with a 150 xr6. Top end was 60 at wot. I put the jackplate on for some improved performance as well as I've wanted one since I bought it. I would still recommend talking to Steve and Josh though and you may consider a jackplate too.


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Re: Boat will NOT get on pad [Re: team hooti josh] #11306463 12/27/15 09:33 PM
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Tommie Offline
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Has this boat done this since new or has it just recently started this issue?

Re: Boat will NOT get on pad [Re: team hooti josh] #11306565 12/27/15 10:16 PM
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team hooti josh Offline OP
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It's started getting progressively worse over the last year or so. It's really noticeable in the warmer water. I tried a 23 this summer and still couldn't tell a difference.

Re: Boat will NOT get on pad [Re: team hooti josh] #11306698 12/27/15 11:28 PM
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Make sure motor isn't mounted too low. When I first got my 97 Nitro 800 I had a similar problem. My boat would go into a violent chine walk at around fifty mph. Turned out motor was mounted to low. Kind of hard to imagine it wouldn't be rigged right all this time....but I guess it's possible. Different boat lengths and weights makes prop selection tricky. My boat performs awesome with a 21 pitch Mercury Revolution 4. Most of the lakes I frequent are from 3200- 6220 feet elevation. It ran pretty quick at Lake Fork this past spring around 64MPH. Good luck! Hope you figure it out

Re: Boat will NOT get on pad [Re: team hooti josh] #11306766 12/27/15 11:57 PM
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You need to have someone check out the complete fuel system and ignition system. Have had several of these Optimax motors act like yours when a coil is going bad but I have also seen this when fuel pump is getting weak.


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Re: Boat will NOT get on pad [Re: team hooti josh] #11307058 12/28/15 02:17 AM
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fordnut Offline
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I would defiantly do what Gary says also if you haven't then do a de-carb and tune up. I put a can of Seafoam for every 16 gal of fuel I put in my boat every time. You can't trust the fuels we are getting these days.


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Re: Boat will NOT get on pad [Re: gary purdy] #11307283 12/28/15 04:10 AM
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Originally Posted By: gary purdy
You need to have someone check out the complete fuel system and ignition system. Have had several of these Optimax motors act like yours when a coil is going bad but I have also seen this when fuel pump is getting weak.


This^^^^^I had similar issues and had a bad fuel pump. On another rig my stator needed replacing....would barely plane boat off. Good luck!

Re: Boat will NOT get on pad [Re: team hooti josh] #11307446 12/28/15 12:23 PM
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Has you boat gained weight over the last few years? Extra gear maybe? Any water intrusion? I have to assume an 07 Nitro has wood construction? Just something to think about if you don't think its a motor issue.

Re: Boat will NOT get on pad [Re: team hooti josh] #11307469 12/28/15 12:58 PM
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Originally Posted By: team hooti josh
It's a 150. Rpm at wot is around 5600 when on pad. Getting on pad though it just drags around 2800-3000 rpm


You say the boat started this and has gotten progressively worse over the past year. When it wasn't having an issue, what was your RPM once on pad? What's the recommended max RPM range for your engine? (Remember, lower than recommended at max is not a good thing - it assures the boat is strained and poor performing.)

Has the prop been changed? Do you recall any solid obstruction hits with the prop?

Have you ever changed the spark plugs, fuel filter, or done any of the other proper maintenance on the engine?

On the spark plugs, if they've been changed, was the EXACT recommended plug used? Has anyone with expertise pulled the plugs to look for signs of a dead/misfiring cylinder?

Last edited by Flippin-Out; 12/28/15 12:58 PM.
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