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I have a 2002 SAN with a 2002 PCM Excalibur. This boat has been run exclusively in salt water. I got over 2000 hours on the original engine. Not sure exactly how many as the digital hour meter doesnt work anymore. I just swapped that with the analog teleflex. I changed the oil on the original engine every 50 hours but other than that I was really hard on the engine. Lots of weight while wakeboarding and wakesurfing. I overheated the engine twice and changed the exhaust maninfolds only once. In the end that cost me the engine as I got water in two cylinders and the engine seized. I spent the last month replacing my engine with a rebuilt/remanufactured chevy 350 long block from a marine engine rebuilder in my area. I bought the long block from him but I pulled the old engine, swapped/cleaned/painted components (FCC, wiring harness, altenator, pumps, new manifolds, intake manifold, etc) and dropped the rebuilt block in myself. Last weekend I finally finished the job and ran the engine. The engine started but it will not idle. In fact below 1500 rpm the engine hunts a little and below 1300 rpm it just dies. The engine "sounds" good while running and I have no engine alarms or lights. Oil pressure and engine temperature are normal. Any ideas what might cause this problem. The boat has been out of service since last August. I have a feeling it may be a computer problem. I did pump out all the old gas and replace it with new gas. I have only run the engine on the trailer. I'm not willing to water test until I figure out this idle problem. Any input would be much appreciated. If I can't figure it out I have set up an appointment to take it to a mechanic next week.
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RE: 2002 PCM Excalibur idle problem after rebuild...
sounds like the idle circuit is not doing what it is supposed to do? I am no FI guru but I would guess it's not a difficult fix once you talk to somebody that knows the system. Did you download the engine manual and go through the testing procedures? -
RE: 2002 PCM Excalibur idle problem after rebuild...
http://www.planetnautique.com/Correc...s%20Manual.pdf
http://www.planetnautique.com/Correc...ls/2004PM2.pdf
Looks like there are no real "testing procedures" for this motor but knowing where the sensors are and what they do might help if you don't already know them.Comment
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I used both manuals during the entire project. The parts manual was really helpful especially when I needed to replace certain parts. I work at a power plant and several guys there work on and rebuild engines for fun. They have been a great source of info but no luck with the idle problem. I'm dropping the boat off with a mechanic tomorrow. I hope its a sensor problem and not the ECU. Thanks for your input!Comment
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