Canadianboomer
Recruit
- Joined
- Jul 8, 2012
- Messages
- 5
Hi Everyone. I just found this website and have been reading for hours and have learned many cool new things. I figured I try posting my issue to get some idea's.
I have an older 1975 Glastron boat with a mercruiser i/o and a chev 250 - 165Hp straight 6 motor. It runs great year after year but a few years ago while testing in my driveway with the rabbit ears, I turned the key off and the motor kept running. We couldn't find the exact cause but suspected the ignition relay or solonoid. A few taps on that seemed to make it all better. Never had an issue since.
This year it seems to be doing the opposite. I have purchased two new batteries, cleaned all connections, replaced one semi worn wire, made sure my battery switch was good, and as usual, the never die engine roared to life. It ran for about 10 minutes like a dream and then stopped by itself with no fuel problem at all. When I tried to turn the key to the "run" position, I noticed that my instruments did not come to life as they normally would. It was dead of power. We turned the switch on and off, tapped the solonoid thing again as well as the second solenoid thing? and the power came back on and it started with no problem. Right now it is all working well but I am worried it will show up again at the worst possible time.
I am thinking of replacing whatever it is that is intermittent. I'm pretty sure it's the cylindrical looking thing that sit's on top of the starter with the big pos wire. Starter solenoid? I always thought the starter solenoid was only responsible for pulling the gear over to engage the flywheel and start the engine. I didn?t know that it distributes the 12v power in the run position. I don't suspect the actual key ignition switch. I'd love to find some kind of electrical drawing showing me where the 12 volts go after I turn the key to the run position. It must go to some kind of relay which sends power to have my instruments come to life. And then it would send 12 volts to starter when I turn key to start. So is it the starter relay or solonoid or could it be the second solenoid ? Because I can see some other module looking thing with wires as well. Anyone have a link or info for a service manual for this old Nova type motor?
Thank you,
Boomer
I have an older 1975 Glastron boat with a mercruiser i/o and a chev 250 - 165Hp straight 6 motor. It runs great year after year but a few years ago while testing in my driveway with the rabbit ears, I turned the key off and the motor kept running. We couldn't find the exact cause but suspected the ignition relay or solonoid. A few taps on that seemed to make it all better. Never had an issue since.
This year it seems to be doing the opposite. I have purchased two new batteries, cleaned all connections, replaced one semi worn wire, made sure my battery switch was good, and as usual, the never die engine roared to life. It ran for about 10 minutes like a dream and then stopped by itself with no fuel problem at all. When I tried to turn the key to the "run" position, I noticed that my instruments did not come to life as they normally would. It was dead of power. We turned the switch on and off, tapped the solonoid thing again as well as the second solenoid thing? and the power came back on and it started with no problem. Right now it is all working well but I am worried it will show up again at the worst possible time.
I am thinking of replacing whatever it is that is intermittent. I'm pretty sure it's the cylindrical looking thing that sit's on top of the starter with the big pos wire. Starter solenoid? I always thought the starter solenoid was only responsible for pulling the gear over to engage the flywheel and start the engine. I didn?t know that it distributes the 12v power in the run position. I don't suspect the actual key ignition switch. I'd love to find some kind of electrical drawing showing me where the 12 volts go after I turn the key to the run position. It must go to some kind of relay which sends power to have my instruments come to life. And then it would send 12 volts to starter when I turn key to start. So is it the starter relay or solonoid or could it be the second solenoid ? Because I can see some other module looking thing with wires as well. Anyone have a link or info for a service manual for this old Nova type motor?
Thank you,
Boomer
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