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Ref my ski buddy’s 2003 5.7L PCM Excalibur 330 engine, 1670 hrs,mechanical throttle linkage, normal mx accomplished annually.
The boat is used 4-5 times a week; normally, 3 ski sets each time out. It iskept outside on a lift. The past month or so, the engine will either not startfor the first set of the day or dies while idling during the ski sets (nosputtering, just quits); does this whether the engine is hot or cold. Theengine will turn over strong, but absolutely no indication of a start. Let itsit for a while, crank it several times, then it will finally start.
The only other problem which may or may not be related is the engine will alsogo in reduction/limp mode while pulling up a skier. We pull the throttle backto idle, pull up the skier again and it works fine. This happens maybe onceevery 2-3 weeks for past several months.
The engine runs great except for these sporadic problems…the “die at idle”problem may happen once a week or every other day…no consistency.
We initially thought it was the kill switch going bad; took it out and splicedthe wires together. That “cure” only lasted a few days. Next we noticed thebutterfly plate in the throttle body had some carbon build up. We sprayed itthoroughly with carb cleaner and it seemed to fix the idle/die issue for abouta week. Now we are back to the engine just sporadically quitting; again, onlyat idle. We also drained a bottle worth of fuel from the fuel canister/filter,no water.
Appreciate any thoughts…tks, mac
The boat is used 4-5 times a week; normally, 3 ski sets each time out. It iskept outside on a lift. The past month or so, the engine will either not startfor the first set of the day or dies while idling during the ski sets (nosputtering, just quits); does this whether the engine is hot or cold. Theengine will turn over strong, but absolutely no indication of a start. Let itsit for a while, crank it several times, then it will finally start.
The only other problem which may or may not be related is the engine will alsogo in reduction/limp mode while pulling up a skier. We pull the throttle backto idle, pull up the skier again and it works fine. This happens maybe onceevery 2-3 weeks for past several months.
The engine runs great except for these sporadic problems…the “die at idle”problem may happen once a week or every other day…no consistency.
We initially thought it was the kill switch going bad; took it out and splicedthe wires together. That “cure” only lasted a few days. Next we noticed thebutterfly plate in the throttle body had some carbon build up. We sprayed itthoroughly with carb cleaner and it seemed to fix the idle/die issue for abouta week. Now we are back to the engine just sporadically quitting; again, onlyat idle. We also drained a bottle worth of fuel from the fuel canister/filter,no water.
Appreciate any thoughts…tks, mac
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