nwboater45
Petty Officer 3rd Class
- Joined
- Sep 6, 2012
- Messages
- 91
I have an 1989 Mercruiser 470, 224, 3.7L. I have been doing a lot of work on this engine over the last year. It seems lately that there is more steam coming out of the exhaust then usually. This is on muffs in my driveway. I have added a video on Youtube. Does this look normal for this motor? This video is after running the motor for about 20 minutes. The video was taken while running it at 900 rpms. The water temp never got above 180 and there was steam coming out of the valve cover relief vent. The outdoor air temp was about 70 degrees. I was just curious if this looks normal or not. I am wondering if I need to replace the head gasket or not.
Thanks.
Thanks.