Canadianboater228
Recruit
- Joined
- May 21, 2017
- Messages
- 5
Hey there, long time reader, first time poster!
So I'm working on a 1974ish mercuiser 165 with the GM 250 in it. It's been parked for a few years now and I've just pulled it out to tackle the rebuild / restore. I've been fighting trying to get the motor to turn over and I'm not having much luck. The starter is getting 12.75 volts. When you put power directly to the starter, it makes a whirling noise like it's free spinning. But when the engaged with the solenoid it will make a loud clunk like it trying to turn over the motor, and you can see the pulleys twitch. I can't figure out for the life of me why the starter is acting differently when the power is received directly or through the solenoid. So thinking my motor was piled up or the starter was weak, I pulled my spark plugs to try to reduce the compression (with no change in the starter's behavior) I noticed what looks like rust when you peer though the spark plug bores. I'm not certain if the boat was winterized properly so it could be a cracked block which has seized the motor, or if my starter is the issue.
Thanks for the help.
So I'm working on a 1974ish mercuiser 165 with the GM 250 in it. It's been parked for a few years now and I've just pulled it out to tackle the rebuild / restore. I've been fighting trying to get the motor to turn over and I'm not having much luck. The starter is getting 12.75 volts. When you put power directly to the starter, it makes a whirling noise like it's free spinning. But when the engaged with the solenoid it will make a loud clunk like it trying to turn over the motor, and you can see the pulleys twitch. I can't figure out for the life of me why the starter is acting differently when the power is received directly or through the solenoid. So thinking my motor was piled up or the starter was weak, I pulled my spark plugs to try to reduce the compression (with no change in the starter's behavior) I noticed what looks like rust when you peer though the spark plug bores. I'm not certain if the boat was winterized properly so it could be a cracked block which has seized the motor, or if my starter is the issue.
Thanks for the help.