Engine will not start when Hot
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=48777
Printed Date: October-06-2024 at 12:23am
Topic: Engine will not start when Hot
Posted By: lowerygdl
Subject: Engine will not start when Hot
Date Posted: June-01-2020 at 7:09pm
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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Replies:
Posted By: desertskier
Date Posted: June-01-2020 at 7:45pm
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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Posted By: lowerygdl
Date Posted: June-01-2020 at 7:50pm
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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Posted By: desertskier
Date Posted: June-01-2020 at 8:14pm
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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Posted By: lowerygdl
Date Posted: June-01-2020 at 8:44pm
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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Posted By: desertskier
Date Posted: June-01-2020 at 10:28pm
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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Posted By: lowerygdl
Date Posted: June-02-2020 at 12:27pm
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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Posted By: lowerygdl
Date Posted: June-02-2020 at 4:01pm
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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