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losing spark?

Old 12-14-2018, 07:35 AM
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Default losing spark?

Starts and runs fine...throttle a
up and good for a cpl seconds then loses all power and dies..turn key off and back on, starts and runs fine...throttle up and loses power again. sometimes will run fine but problem does come back... coils are new...1994 johnson/evinrude 175
Old 12-14-2018, 10:33 AM
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I'm not sure if it would be on your engine but on my 2000 OceanPro 200 I was surprised that there is a switch that TURNS OFF 2-3 CYLINDERS as you switch from forward to neutral. I was told it was to ensure the engine slows down enough to not injure the gearbox. (????!?!!) It made my engine stall if I moved the control too slowly in / out of neutral.

You may want to see if that switch is present and if it is, possibly disconnect it to test or make sure it is actuating properly and not sticking or enabling when it isn't supposed to due to grease/salt/dirt in the control.

--Kevin
Old 12-14-2018, 11:00 AM
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Sure its not a fuel flow problem?
Old 12-21-2018, 06:22 PM
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Not a fuel prob, that i know of anyway.Other motor runs perfect. I got a new power pack as I have seen in other threads that could be a problem.
Old 12-22-2018, 04:29 AM
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Originally Posted by Reming870 View Post
Sure its not a fuel flow problem?
Sounds like it could be the fuel pump, usually when you loose spark on older engines the Stator goes and you loose spark %100.
Old 12-22-2018, 04:42 AM
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Have you checked the plug wires?
Old 12-22-2018, 12:07 PM
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Check to confirm how many cylinders are firing , maybe check present fuel quality too.
Old 12-24-2018, 06:46 AM
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Originally Posted by TTaxi View Post
Check to confirm how many cylinders are firing , maybe check present fuel quality too.
Pull the plugs out and check them, while your at it do a compression check to make sure they cylinders are still good.
Old 12-24-2018, 11:38 AM
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Originally Posted by mltbus1 View Post
Starts and runs fine...throttle a
up and good for a cpl seconds then loses all power and dies..turn key off and back on, starts and runs fine...throttle up and loses power again. sometimes will run fine but problem does come back... coils are new...1994 johnson/evinrude 175
Try running on a portable tank with fresh fuel,start there............
Old 12-24-2018, 11:51 AM
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Could well be the computer. I had the same engine. mine would run for about 10 to 15 minutes and kick like i hit something. Eventually it got to run about 10 minutes and just die like the kill switch was activated. The crazy thing was that i could idle it for hours and wouldn't die. It only happened under load. I changed the computer and never had an issue again.That engine is a work horse. Sold it ten years later still running like new. Good luck.
Old 12-25-2018, 06:01 AM
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Check and clean motor positive and ground connections along with battery connections. With the motor running try moving the wiring harness around along with trimming the motor and turning left and right. Try and replicate the the motor dying. Also make sure the fuel bulb is staying firm when the motor dies, you could also try pumping the fuel bulb while running to see if that keeps the motor running. Do the basics first and go from there.

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