swampyankee
Contributing Member
Although the starboard engine cooling system was giving me fits until last weekend (new raw water pump, new thermostat, sealed leaking raw water strainer), the port engine on my '78 Silverton was running cool and losing no fluids - until last weekend. Just when it looked like I had a squared away engine room, I noticed greenish discharge from the exhaust water on my port engine. On my next fluid check I found low coolant on the port engine.
I topped it off and at the next startup I found a greenish discharge again. I did a cooling system leak test and it held 15 lbs. for at least 15-20 minutes. But when I removed the heat exchanger end cover during the test I got green tinged raw water out of it. I would assume that even though the leak test didn't show a pressure loss, the heat exchanger is leaking and needs to be replaced (it looks rather dodgy). But is there another source of coolant loss into the exhaust I should look at?
I topped it off and at the next startup I found a greenish discharge again. I did a cooling system leak test and it held 15 lbs. for at least 15-20 minutes. But when I removed the heat exchanger end cover during the test I got green tinged raw water out of it. I would assume that even though the leak test didn't show a pressure loss, the heat exchanger is leaking and needs to be replaced (it looks rather dodgy). But is there another source of coolant loss into the exhaust I should look at?