2007 excalibur misfire
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=31735
Printed Date: May-06-2024 at 7:23am
Topic: 2007 excalibur misfire
Posted By: kapla
Subject: 2007 excalibur misfire
Date Posted: October-08-2013 at 6:48pm
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Boat 2007 sn 206 ex330 with around 400 hours. Ever since the test drive Julio boat is been experiencing a slight miss, more upon take off and when cold, like a small hiccups. Right after he bought the boat he had it serviced, fluids changed, along with spark plugs...problem persisted, mechanic went again and said a bad cable to the dizzy was going to ground causing missfires... Engine got better but still misses some. Last weekend he ploughed the bow letteing lots of water, some got into the bilge.He let the boat outside. Sunday when he went to start it again engine was full of condensation. Ran the boat and missfire were terrible...but went away once the engine got warm... At bf speed boat perform ok but if you lift the hatch you can hear the miss... Cables are original, so are cap and rotor... My guess is any of these 3 things... Thoughts?  ------------- <a href="">1992 ski nautique |
Replies:
Posted By: quinner
Date Posted: October-08-2013 at 7:11pm
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Cap and Rotor are cheap, you can use a standard automotive version, I would change cap for sure. |
Posted By: kapla
Date Posted: October-08-2013 at 7:16pm
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are there risks running the engine in this condition? like burning a piston or valve or whatever? ------------- <a href="">1992 ski nautique |
Posted By: quinner
Date Posted: October-09-2013 at 11:36am
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Had some rough running issues with my Excal and the cap solved it, cap did not even look bad. Also be sure the coil/center cap wire is good, they are known to fail sooner then the other wires. I got my cap and rotor at the local Auto Parts store, they are not marine specific. |
Posted By: kapla
Date Posted: October-10-2013 at 5:29pm
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Cris thanks for the info, anyway parts need to come from the US, so paying extra for marine isnt quite an issue... No local auto parts store carries V8 parts...our cars are european style with the little 4bangers... Even for my vette I need to order parts from you... ------------- <a href="">1992 ski nautique |
Posted By: Gary S
Date Posted: October-10-2013 at 6:55pm
They are starting that crap here too Kap. Guy's who would never have a 6 in their boat are prefectly happy to have one and pay more for one in their truck  ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1711&sort=&pagenum=1&yrstart=1966&yrend=1970" rel="nofollow - 69 Mustang HM SS 95 Nautique Super Sport |
Posted By: ArtCozier
Date Posted: October-13-2013 at 10:38pm
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Gary, they had a run of bad distributor caps about that time. You can do automotive, but I prefer to buy the upgrade ones with the brass contacts. I found them at O'Reily Auto parts. Art ------------- "Art" |
Posted By: kapla
Date Posted: October-14-2013 at 2:40am
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problem solved... removed dist cap and it was full of rust dirt...clean it out, put it again, and now runs like a champ! looks like it was never opened before... ------------- <a href="">1992 ski nautique |
Posted By: ArtCozier
Date Posted: October-14-2013 at 11:11am
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I'm glad to hear that it turned out to be something simple. No doubt the plug was cross-firing with another, and thus the erosion of the plug. Art ------------- "Art" |
Posted By: Andy3535
Date Posted: December-20-2013 at 3:13am
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I had the same problem and changed the cap and rotor arm and everything was ok for a short time and then the misfire started again... Changed the cam retardation as described in this PCM update and never had a problem since.. http://www.pleasurecraft.com/ServiceUpdate/SUP2009-01CAMRetard.pdf Andy |
Posted By: ArtCozier
Date Posted: December-20-2013 at 10:43am
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Andy, I think that Kapla's problem was solved back in April. If you continue to have the problem, the following might help you. True that the cam retard setting might be the cause. Check it as described. If you don't have access to a Diacom diagnostic system, at least check your engine serial number and specification decal against the information in the bulletin he mentioned. Once again, the distributor caps can be a problem. Try to find the one with the brass contacts, not the aluminum. You might want to check the resistance of the spark plug wires with an ohmeter if you have one. Resistance should be between 40 ohms and 10,000 ohms per foot, depending on the type of wire you have. Make sure that the porcelain insulators on the spark plugs are clean. Try running the engine in darkness and look for any sparks around the wires, especially around the boots at the distributor end and at the spark plug ends. Look at the spark plug electrodes for signs of abnormal performance on one or more plugs. Change the spark plugs and see if that helps. ------------- "Art" |
Posted By: Andy3535
Date Posted: December-20-2013 at 11:13am
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Hi Art many thanks for your reply. I have my own Diacom Techmate and the adjustment to the Cam Retardation cured the problem,which I already wrote in my first message... Andy |
Posted By: Bri892001
Date Posted: December-20-2013 at 11:40am
| Nice looking boat Andrew! |
Posted By: Andy3535
Date Posted: December-20-2013 at 12:14pm
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Hi Many thanks,yes it is a lovely looking boat sadly here in Germany nobody wants to buy it,I have been trying to sell it for ,about six months. Andy |