Posted by David Keelan (188.8.131.52) on April 25, 2004 at 19:40:06:
Regarding my A-4 with #4 exhaust valve stuck managed to get valve out thanks to moyermarine valve spring compressor Found valve very difficult to get out had to remove with vise grips turning at the same time I was pulling it out! B4 doing that I cranked engine and discovered valve came up when camlobe encountered it However the valve would not go back down could not get it free enough for that to happen Any ideas why so difficult I've ordered new valve What could be the cause of valve not closing ???