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Engine will not start when Hot |
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lowerygdl 
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Joined: June-01-2020 Location: 64086 Status: Offline Points: 11 |
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 Topic: Engine will not start when HotPosted: June-01-2020 at 7:09pm |
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My 1989 Nautique w/350FOrd starts missing after about 30 minutes of running and then dies when I slow to an idle. Then it will not fire, only cranks over. I have replaced the carburetor, coil, resistor and still have the same problem. It has a Mallory electronic ignition. If I jumper over the resistor or jumper from battery/pos to coil/pos it will start immediately.
I am stumped? Any ideas? |
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GDL
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desertskier
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Joined: December-19-2006 Location: Az Status: Offline Points: 1115 |
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Posted: June-01-2020 at 7:45pm |
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The Mallory module requires 12V (red wire) and should not be powered through the resistor.
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92 SN - Owned since 93
99 Pro Air 89 SN - Went to live on a lake in Texas 75 Donzi 16 - Sold in 93 |
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lowerygdl
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Joined: June-01-2020 Location: 64086 Status: Offline Points: 11 |
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Posted: June-01-2020 at 7:50pm |
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Interesting, the installation instructions say it requires an ignition ballast resistor. Is is the E-Spark PN 61002M. It was running fine for a couple of years with the Mallory and resistor as they are but then I started having issues last fall, and still.
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GDL
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desertskier
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Joined: December-19-2006 Location: Az Status: Offline Points: 1115 |
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Posted: June-01-2020 at 8:14pm |
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Did you replace the coil with the same one?
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92 SN - Owned since 93
99 Pro Air 89 SN - Went to live on a lake in Texas 75 Donzi 16 - Sold in 93 |
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lowerygdl
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Joined: June-01-2020 Location: 64086 Status: Offline Points: 11 |
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Posted: June-01-2020 at 8:44pm |
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I have replaced the coil twice. The first time last fall it was replaced buy Johns Marine where I was having it serviced. This week I replaced it again just in case the other one was bad. This time it is a coil I picked up at Advanced Auto. Both coils had the same result.
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GDL
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desertskier
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Joined: December-19-2006 Location: Az Status: Offline Points: 1115 |
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Posted: June-01-2020 at 10:28pm |
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Some coils have built in resistors. Did you replace it with the exact same coil as you had been using when it worked? Who is the current coil made by and what is the PN?
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92 SN - Owned since 93
99 Pro Air 89 SN - Went to live on a lake in Texas 75 Donzi 16 - Sold in 93 |
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lowerygdl
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Joined: June-01-2020 Location: 64086 Status: Offline Points: 11 |
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Posted: June-02-2020 at 12:27pm |
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I will need to check on the maker and P/N later today to let you know. Thank you. I discussed this with Advanced Auto when he was looking up what I needed, but I am not 100% sure about this.
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GDL
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lowerygdl
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Posted: June-02-2020 at 4:01pm |
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NAPA does not show a brand. It is P/N IC10SB, Says Line:MPE
Not sure if this helps, but appreciate any incite you might have |
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GDL
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