1991 Nautique Excel PCM 5.8L
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=50646
Printed Date: April-28-2024 at 7:11pm
Topic: 1991 Nautique Excel PCM 5.8L
Posted By: TimN
Subject: 1991 Nautique Excel PCM 5.8L
Date Posted: May-25-2022 at 10:54am
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My 1991 PCM 5.8L is surging while under throttle at 3,000 RPM. Seems like it is not running at full efficiency then all of sudden it is fine then drop back down again. I just had new plugs, wires, carb cleaned etc... Any suggestions? Tim
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Replies:
Posted By: KENO
Date Posted: May-25-2022 at 2:04pm
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Do you have a distributor or the protec ignition system? That might affect the suggestions
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Posted By: Jonny Quest
Date Posted: May-25-2022 at 4:04pm
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If you have the ProTech system all of the spark plug wires will run to four coil packs at the rear of the engine. If it is not a ProTech engine then you’ll have a standard distributor. ------------- Current 2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
Posted By: TimN
Date Posted: May-25-2022 at 6:36pm
| I have a distributor. Not a ProTec engine |
Posted By: KENO
Date Posted: May-26-2022 at 7:46am
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Since it has a distributor, I'd might be thinking about replacing the cap,rotor,(and points and condenser if it still has points) Or is there an electronic module in the distributor instead of points? What brand of distributor is it? There should be a tag on the housing identifying it. How's it run at speeds higher than 3000 rpm? Does it just keep getting worse or does it smooth out or does it just not go over 3000 rpm? Do you have an inline fuel filter just before the fuel pump? Just some questions for you to answer to try to help you try to figure out if it's ignition or fuel related
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Posted By: CanvasVapor
Date Posted: May-26-2022 at 9:15am
| Could a partially blocked fuel vent or check valve at the tank cause that? |
Posted By: TimN
Date Posted: July-05-2022 at 1:38pm
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As a follow up the distributor cap and rotor needed to be replaced. Problem solved. I appreciate the help from all. Tim
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