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My 1991 Ski Nautique has, after years of trouble-free operation, (500+ hrs) has developed a misfire at all speeds except idle. Sometimes the engine will quit, but will restart immediately. Research has led me to suspect the coil packs. Any way to test them? Should I consider retrofitting a new distributor system? Cost?
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I’m not sure of a way to test them but go to www.correctcraftfan.com those guys know a ton about the older nautiques. I have a 92 sport nautique and they’ve helped me a lot over the years. -
Thanks. I'll give them a try. I guess I've got all winter to figure it out.....Comment
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Anybody have good results switching coil packs for a standard distributor?Comment
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Like Chris says get over to CCF for the older boats. Here is the best thread out of many on the change over. There are different ways of doing it- D.U.I's are one of the best choices. I believe there is someone who figured how to change the pro tec and keep the throttle body injection version as well.Last edited by gary s; 12-02-2018, 11:23 AM.Comment
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I would replace cap and rotor and make sure the points are adjusted correctly. I had the same motor in a '91 Ski Brendella and had the same issues you are having, and that's what mine ended up being.Comment
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That's normally a good idea but one of the concepts of the ProTec is no cap,points or rotor. A seemingly good first effort on engine management,the down side being no service parts or support.
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Get rid of the pro tech, it’s crap! Mine was converted a long time ago and it runs great. It runs nearly as good as a new efi engine.Comment
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Thanks all. I've decided to junk the pro-tech and retrofit a DUI system. Now the shopping begins!Comment
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Go to skidim.com and they sell a kit to get rid of the pro tech.Comment
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While your Protec may have crapped the bed, when was the last time you did plugs/wires? I'd at least start there before dropping the money on a conversion, since you can easily re-use the plugs/wires if you swap to a dizzy (unless any of the coil packs look melted/deformed - in that case just convert it). If you do convert, you won't notice any difference in power, and may even notice an improvement since you're dealing with a carb. When mine craps out, I'm going to have to do the distributor and replace the TBI unit with a carb, which doubles the cost...Comment
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No need to replace the TBI unless you want to......Comment
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The boat currently has a 4 bbl. Holley carb. Do I need to do any adjustments or modifications to it?Comment
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Shouldn't have to do anything to your carb (so long as it's not in need of a general tune-up or rebuild).Originally posted by LCIB View PostComment
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Ooh, I hadn't caught that thread on CCF, that's good news and will likely save me $500ish bucks down the road. For now, my Protec w/TBI is running pretty strong, but frankly I'll be surprised if it makes it to 1000 hours knowing when most seem to crap out.Originally posted by gary s View PostComment
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