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#1
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A buddy of mine has a Crownline 20 foot bowrider, with quicksilver
commander 3000 controls, a 350 MPI engine... at times, the engine won't fire or crank no click or nothing, however all electronics on board work properly. I.E. Bildge, blower, hatch, trim lights stereo so on so fourth, and when you take the power control lever, and run it full forward and full reverse then return it to neutral while the key is off, the engine will fire up right away.... I'm tempted to tell him to check the wires to the ignition switch from the neutral lock out switch, or the switch itself.. anyone have similar troubles?... how did it get resolved?.. Thanks. |
#2
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posted to rec.boats
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![]() And everyone said I was nuts to buy an old boat with OMC Drive....at least mine starts and runs EVERY time....., |
#3
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posted to rec.boats
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On Jul 7, 12:02 pm, wrote:
A buddy of mine has a Crownline 20 foot bowrider, with quicksilver commander 3000 controls, a 350 MPI engine... at times, the engine won't fire or crank no click or nothing, however all electronics on board work properly. I.E. Bildge, blower, hatch, trim lights stereo so on so fourth, and when you take the power control lever, and run it full forward and full reverse then return it to neutral while the key is off, the engine will fire up right away.... I'm tempted to tell him to check the wires to the ignition switch from the neutral lock out switch, or the switch itself.. anyone have similar troubles?... how did it get resolved?.. Thanks. |
#4
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posted to rec.boats
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On Jul 8, 11:52 am, Tim wrote:
On Jul 7, 12:02 pm, wrote: A buddy of mine has a Crownline 20 foot bowrider, with quicksilver commander 3000 controls, a 350 MPI engine... at times, the engine won't fire or crank no click or nothing, however all electronics on board work properly. I.E. Bildge, blower, hatch, trim lights stereo so on so fourth, and when you take the power control lever, and run it full forward and full reverse then return it to neutral while the key is off, the engine will fire up right away.... I'm tempted to tell him to check the wires to the ignition switch from the neutral lock out switch, or the switch itself.. anyone have similar troubles?... how did it get resolved?.. Thanks.- Hide quoted text - - Show quoted text - Hmm, I don't kwow how that happened. I hit reply and it made a blank post! Anyhow, I thinkt he problem is in the momentary kill switch. Mercruiser has a "kill" switch built into the mechanism, that will all the engin to be momtarily shut off while shifting to forward or reverse, to allow the gears to mech properly without any engine load. I feel it's not defective, but needs adjustment, but if it's defective, it's holding "open" untill the shift mechanism jars it loose. just an opinion. |
#5
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posted to rec.boats
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![]() "Tim" wrote in message ups.com... | On Jul 8, 11:52 am, Tim wrote: | On Jul 7, 12:02 pm, wrote: | | | | A buddy of mine has a Crownline 20 foot bowrider, with quicksilver | commander 3000 controls, a 350 MPI engine... at times, the engine | won't fire or crank no click or nothing, however all electronics on | board work properly. I.E. Bildge, blower, hatch, trim lights stereo | so on so fourth, and when you take the power control lever, and run | it full forward and full reverse then return it to neutral while the | key is off, the engine will fire up right away.... I'm tempted to | tell him to check the wires to the ignition switch from the neutral | lock out switch, or the switch itself.. anyone have similar | troubles?... how did it get resolved?.. | | Thanks.- Hide quoted text - | | - Show quoted text - | | Hmm, I don't kwow how that happened. I hit reply and it made a blank | post! | | Anyhow, I thinkt he problem is in the momentary kill switch. | Mercruiser has a "kill" switch built into the mechanism, that will all | the engin to be momtarily shut off while shifting to forward or | reverse, to allow the gears to mech properly without any engine load. | I feel it's not defective, but needs adjustment, but if it's | defective, it's holding "open" untill the shift mechanism jars it | loose. | | just an opinion. | | That's a popular opinion but couldn't be further from the truth. The shift interrupter will only cause the engine to stumble when pulling OUT of gear. 99.9% of the time that it closes and kills the ignition is because of a problem with the lower cable or linkage. |
#6
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posted to rec.boats
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On Jul 8, 12:11 pm, "Jim" wrote:
"Tim" wrote in message ups.com... | On Jul 8, 11:52 am, Tim wrote: | On Jul 7, 12:02 pm, wrote: | | | | A buddy of mine has a Crownline 20 foot bowrider, with quicksilver | commander 3000 controls, a 350 MPI engine... at times, the engine | won't fire or crank no click or nothing, however all electronics on | board work properly. I.E. Bildge, blower, hatch, trim lights stereo | so on so fourth, and when you take the power control lever, and run | it full forward and full reverse then return it to neutral while the | key is off, the engine will fire up right away.... I'm tempted to | tell him to check the wires to the ignition switch from the neutral | lock out switch, or the switch itself.. anyone have similar | troubles?... how did it get resolved?.. | | Thanks.- Hide quoted text - | | - Show quoted text - | | Hmm, I don't kwow how that happened. I hit reply and it made a blank | post! | | Anyhow, I thinkt he problem is in the momentary kill switch. | Mercruiser has a "kill" switch built into the mechanism, that will all | the engin to be momtarily shut off while shifting to forward or | reverse, to allow the gears to mech properly without any engine load. | I feel it's not defective, but needs adjustment, but if it's | defective, it's holding "open" untill the shift mechanism jars it | loose. | | just an opinion. | | That's a popular opinion but couldn't be further from the truth. The shift interrupter will only cause the engine to stumble when pulling OUT of gear. 99.9% of the time that it closes and kills the ignition is because of a problem with the lower cable or linkage. I stand corrected. Pulled this from another board: "The switch in question is common to many engines. What it does is to momentarily kill the engine, only for a few milliseconds, as the clutch dog or cone disengages. For a brief moment while the clutch mechanism is moving, its teeth or surfaces are only just on the verge of being engaged, and if a power pulse from the engine coincides with this instant, a bit of metal can be scraped off of the clutch mechanism. So by killing the engine for a few milliseconds as the clutch moves, we can guarantee that no power pulse will coincide with that instant where the mechanism is most vulnerable. Once the clutch has moved, the spark plugs get their power back and the engine keeps on turning. (All of this should happen in less than a couple of revolutions, usually, and so the engine doesn't actually stop turning.) What we have here appears to be that the momentary-kill switch is jammed, and so does not return to its normal position quickly enough after the shift. I would suggest thoroughly inspecting all throttle/ shift connections and cables, then replacing the switch...." |
#7
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posted to rec.boats
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On Jul 8, 1:48 pm, Tim wrote:
On Jul 8, 12:11 pm, "Jim" wrote: "Tim" wrote in message oups.com... | On Jul 8, 11:52 am, Tim wrote: | On Jul 7, 12:02 pm, wrote: | | | | A buddy of mine has a Crownline 20 foot bowrider, with quicksilver | commander 3000 controls, a 350 MPI engine... at times, the engine | won't fire or crank no click or nothing, however all electronics on | board work properly. I.E. Bildge, blower, hatch, trim lights stereo | so on so fourth, and when you take the power control lever, and run | it full forward and full reverse then return it to neutral while the | key is off, the engine will fire up right away.... I'm tempted to | tell him to check the wires to the ignition switch from the neutral | lock out switch, or the switch itself.. anyone have similar | troubles?... how did it get resolved?.. | | Thanks.- Hide quoted text - | | - Show quoted text - | | Hmm, I don't kwow how that happened. I hit reply and it made a blank | post! | | Anyhow, I thinkt he problem is in the momentary kill switch. | Mercruiser has a "kill" switch built into the mechanism, that will all | the engin to be momtarily shut off while shifting to forward or | reverse, to allow the gears to mech properly without any engine load. | I feel it's not defective, but needs adjustment, but if it's | defective, it's holding "open" untill the shift mechanism jars it | loose. | | just an opinion. | | That's a popular opinion but couldn't be further from the truth. The shift interrupter will only cause the engine to stumble when pulling OUT of gear. 99.9% of the time that it closes and kills the ignition is because of a problem with the lower cable or linkage. I stand corrected. Pulled this from another board: "The switch in question is common to many engines. What it does is to momentarily kill the engine, only for a few milliseconds, as the clutch dog or cone disengages. For a brief moment while the clutch mechanism is moving, its teeth or surfaces are only just on the verge of being engaged, and if a power pulse from the engine coincides with this instant, a bit of metal can be scraped off of the clutch mechanism. So by killing the engine for a few milliseconds as the clutch moves, we can guarantee that no power pulse will coincide with that instant where the mechanism is most vulnerable. Once the clutch has moved, the spark plugs get their power back and the engine keeps on turning. (All of this should happen in less than a couple of revolutions, usually, and so the engine doesn't actually stop turning.) What we have here appears to be that the momentary-kill switch is jammed, and so does not return to its normal position quickly enough after the shift. I would suggest thoroughly inspecting all throttle/ shift connections and cables, then replacing the switch...."- Hide quoted text - - Show quoted text - I really apreciate the help everyone, but I don't think the fix that has been suggested is an accurate one. as his problem doens't happen when the engine is running, it happens when he tries to start the engine. the symptoms he experiences are very similar to a dead car battery, but you can't hear anything clicking or even trying to work. play with the power controls go all forward to all reverse then to neutral again and then it starts right away. this is the sort of problem that happens when launching at a marina... he is quite embarrassed.... I told him to buy a Checkmate. ![]() all kidding aside, I told him I'd do some fishing for him, but looks like he's gonna have to go to the Merc dealer for his anual rape session... unless ofcourse someone has any other ideas besides that kill switch....? thanks! |
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