Engine cutting out

« **on:** August 31, 2014, 07:21:48 PM »

So it seems that the problem with my boat is back. The boat will start and run strong for hours but once you park it and it cools off it doesnt run right. It will start and take off but will cut out and die shortly after plaining. But if fires right back up then will do the same thing. Ive replaced the coil. dist. Wires. Plugs. Rebuilt the carb. And has all new fuel lines aswell as pump. Anyone have any ideas on what the problem could be? Ive taken it to a shop three times and every time they change what they think is wrong the problem is still there. Any advise is very helpfull. Thanks in advance

Also motor is an indamar 454 with holley 750 vac second

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« **Reply #1 on:** August 31, 2014, 07:35:11 PM »

Oky first thought was the coil! But since you said it was changed start looking at the coil wires!! I bet there is something there! My thought is that as it has time to warm up you get an open.

Good luck!

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« **Reply #2 on:** August 31, 2014, 07:56:45 PM »

Quote from: mobboss on August 31, 2014, 07:35:11 PM

Oky first thought was the coil! But since you said it was changed start looking at the coil wires!! I bet there is something there! My thought is that as it has time to warm up you get an open.

Good luck!

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Ya I had similar thoughts. But its all new so im lost now. And thanks

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« **Reply #3 on:** August 31, 2014, 08:08:57 PM »

Does it just cut out or does it sound like it's running out of gas?

-beerjet-

« **Reply #4 on:** August 31, 2014, 08:14:46 PM »

Is it a mechanical fuel pump or electric..

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« **Reply #5 on:** August 31, 2014, 09:48:16 PM »

Do you have a Hobbs switch? Oil pressure safety switch that is on the back of the block. If you have an electric fuel pump the power from your pump runs off of this switch. When you have low oil pressure in block it shuts your fuel pump off to prevent it from flooding your engine. I would check and replace if you do.

« **Reply #6 on:** August 31, 2014, 10:09:14 PM »

Quote from: beerjet on August 31, 2014, 08:08:57 PM

Does it just cut out or does it sound like it's running out of gas?

-beerjet-

Feels like someone turned the key off

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« **Reply #7 on:** August 31, 2014, 10:09:40 PM »

Quote from: ehren4919 on August 31, 2014, 08:14:46 PM

Is it a mechanical fuel pump or electric..

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Electric

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« **Reply #8 on:** August 31, 2014, 10:12:41 PM »

Did you check all electrical connections?

-beerjet-

« **Reply #9 on:** August 31, 2014, 10:14:20 PM »

I'd check every bit of wiring from front to rear. Also check the ignition switch

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« **Reply #10 on:** September 01, 2014, 12:08:34 AM »

Quote from: Hddaddy on August 31, 2014, 09:48:16 PM

Do you have a Hobbs switch? Oil pressure safety switch that is on the back of the block. If you have an electric fuel pump the power from your pump runs off of this switch. When you have low oil pressure in block it shuts your fuel pump off to prevent it from flooding your engine. I would check and replace if you do.

I do have a Hobbs switch. I have replaced the switch and had the same problem so we then bypassed the switch and still have the problem.

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« **Reply #11 on:** September 01, 2014, 08:46:10 AM »

I know you said you rebuilt the carb, have you adjusted the float levels?

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« **Reply #12 on:** September 01, 2014, 10:50:34 AM »

I had a loose electrical connection once and it did that.
It's always the parts that cost penny's that have you chasing your tail.

-beerjet-

« **Reply #13 on:** September 01, 2014, 01:49:20 PM »

Quote from: MorePower on September 01, 2014, 08:46:10 AM

I know you said you rebuilt the carb, have you adjusted the float levels?

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Yes the boat runs great until you let stop and shut it off for a while then it runs fine up intill it planes then it is like someone shut off the boat.

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« **Reply #14 on:** September 01, 2014, 02:10:57 PM »

This is dumb as hell... But have you checked for water in the fuel?

GT

« **Reply #15 on:** September 01, 2014, 02:21:24 PM »

Quote from: beerjet on September 01, 2014, 10:50:34 AM

I had a loose electrical connection once and it did that.
It's always the parts that cost penny's that have you chasing your tail.

-beerjet-

Ya i will double check right now but the wierd thing is the boat will run all day untill i stop and let it cool down. That is the part that makes me not think its a loose cibection but you never know thanks for all the advise guys.

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« **Reply #16 on:** September 01, 2014, 02:27:22 PM »

Quote from: GT Jets on September 01, 2014, 02:10:57 PM

This is dumb as hell... But have you checked for water in the fuel?

GT

Yes cant see any but i will put a new water seperator in tom just to be sure

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« **Reply #17 on:** September 01, 2014, 06:03:17 PM »

JUst a quick question??? where did you mount your coil??? and when you changed it , did you put it back in the same place?

Wondering if it is just getting to hot.

« **Reply #18 on:** September 01, 2014, 08:50:57 PM »

Quote from: mobboss on September 01, 2014, 06:03:17 PM

JUst a quick question??? where did you mount your coil??? and when you changed it , did you put it back in the same place? Wondering if it is just getting to hot.

Coil is where (on top off the motor behing the carb) it has been since the boat was new. Not the best pic but you can see it behind the carb.

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« **Reply #19 on:** September 01, 2014, 08:56:51 PM »

Let me guess . which is under a engine cover??? ok here is my suggestion , run it , get it to do what it has been doing , Not starting touch the coil , i bet its almost to hot to touch! if thats the case theres your prob! Now what may need to happen is a vent and a fan . but Yes move the coil off the motor , maybe to one of the walls.

Try that let me know what happens! You have me currious!!

« **Reply #20 on:** September 01, 2014, 09:26:18 PM »

Have you tried disconnecting the electric choke?

GT

« **Reply #21 on:** September 02, 2014, 08:14:30 AM »

Quote from: mobboss on September 01, 2014, 08:56:51 PM

Let me guess . which is under a engine cover??? ok here is my suggestion , run it , get it to do what it has been doing , Not starting touch the coil , i bet its almost to hot to touch! if thats the case theres your prob! Now what may need to happen is a vent and a fan . but Yes move the coil off the motor , maybe to one of the walls.

Try that let me know what happens! You have me currious!!

The coil does get warm to the touch. I will try to move it away from the block and see what happens. thanks for the info.

« **Reply #22 on:** September 02, 2014, 08:16:08 AM »

Quote from: GT Jets on September 01, 2014, 09:26:18 PM

Have you tried disconnecting the electric choke?

GT

no i have not but next week when i hit the lake i will give that a try as well.

« **Reply #23 on:** September 02, 2014, 02:09:19 PM »

Make sure the nut behind the wheel is tight! 😅

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« **Reply #24 on:** September 02, 2014, 02:17:12 PM »

Quote from: rush1 on September 02, 2014, 02:09:19 PM

Make sure the nut behind the wheel is tight! 😅

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Thats gonna be a hard one to tighten lol

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