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Old 07-28-2019, 10:02 PM
[email protected] mjstonework122@hotmail.com is offline
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Boat: 2001 X Star, 1994 Prostar 190, 1989 SkiNautique.
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1994 prostar 190 erratic ignition

OK, any ideas on what could cause an erratic ignition?
Basically it's still running like crap and im trying to narrow it down. When I timed it he other day, I noticed that the ignition spark will vary quite a bit and I'm worried that I damaged something in the distributor when I replaced the cap and rotor.
also does anyone have a link to a marine distributer that might work with this boat?
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Last edited by [email protected]; 07-29-2019 at 10:19 AM. Reason: spelling
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Old 07-29-2019, 03:14 PM
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JMann JMann is offline
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My go to is always Skidim.com

They seem to have everything for this era boat.
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Old 07-29-2019, 11:19 PM
[email protected] mjstonework122@hotmail.com is offline
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Thanks.
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Old 07-29-2019, 11:49 PM
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Ignition Control Module at your distributor; not a whole lot under there to damage if you just changed cap and rotor. Wires all back on correctly? Check all your ground wires too.

Ign Module $45 amazon, rock auto $11 to $52.

https://www.amazon.com/ACDelco-D1943...33504755&psc=1
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Old 07-30-2019, 01:24 PM
shunra shunra is online now
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I had a problem like this and it took more than a season to track down.

In my case there is a rotating magnet and pickup in the distributor feeds a signal to the ignition module for base timing. Kind of like a crank position sensor, just not on the crank.

This magnet ended up cracking which no doubt messed with the north and south poles of the magnet and sent the whole system into chaos. I couldn't get the timing to stay consistent to save my life. New marine distributor and my problem was solved.

Last edited by shunra; 07-30-2019 at 04:43 PM.
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Old 07-31-2019, 10:43 AM
[email protected] mjstonework122@hotmail.com is offline
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Okay that's really good advice. Does my distributor technically have a pickup and magnet? Does anybody have any link to Amazon I am really bad with purchasing the wrong products lately.
I also should have mentioned that I replaced the ignition control module.
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Old 07-31-2019, 10:47 AM
[email protected] mjstonework122@hotmail.com is offline
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Also I don't know where to go to look this up I hooked up a light bulb to read the codes. I had one quick flash then two quick flashes cycled three times. Then I had four flashes followed by one flash cycle three times. Does this mean anything to anybody?
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Old 07-31-2019, 05:14 PM
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Flashing once, then twice, three times means that it's in diagnostic mode. The DTC is displayed after that. If you are seeing four flashes and then one, it's code 41. Just make sure that you observed correctly because DTC 14 is low engine temperature.
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Old 07-31-2019, 05:20 PM
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Old 08-01-2019, 09:20 AM
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So here's the update in case someone else trying to track down and erratic idle. By the way thanks for everyone's help...its likley that the timing light is picking up a crossfire from one of the other wire causing it to see more erratic than it should. the boat in fact did need a tune up despite the fact that supposedly the mechanic did one at the beginning of the season. It ran much better after new plugs. I guess at the end of the day we might have had several problems happening the thermostat definitely seemed non-functioning and may have cause the plugs to fowl way too soon. I don't know for sure if this is what was causing it to run poorly and I was just miss conflating interacted erratic timing. Although I am still not 100% sure of any of this. It did have a code 41 not a 14 haha this is very ironic because A 14 is low temp. Again I pre-checked a video that I took and it was certainly a code 41. I am thinking that it may have just been a loose connection somewhere on the electrical control module and I am going to go through again tonight and confirm that everything is tight and clipped properly. Basically while I was having a really hard time understanding why I would have an erratic ignition, a crossfire was likely to blame.
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Last edited by [email protected]; 08-01-2019 at 09:37 AM.
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