23-06-2018, 07:25 AM
I took my engine to bits, replaced (amongst other things) the valves and guides, and so far have done about 50 miles.
OK, until I was coming home yesterday. Then it goes on to three cylinders and makes a loud rattling noise.
Head off - No.1 valve stuck wide open, and it takes some effort to close it.
Manifold off, and valve out. It looks like some slight foreign body had gone down the guide and jammed the valve.
Does the "thumb" compression test feel different from No. 1 to the others?
Bite the bullet - it doesn't take long. Its getting the surfaces clean that takes the time.
And putting the collets back in. I gave up after an hour and a half, and made a tool to hold the collets.
Sorted, five minutes later!
Simon
OK, until I was coming home yesterday. Then it goes on to three cylinders and makes a loud rattling noise.
Head off - No.1 valve stuck wide open, and it takes some effort to close it.
Manifold off, and valve out. It looks like some slight foreign body had gone down the guide and jammed the valve.
Does the "thumb" compression test feel different from No. 1 to the others?
Bite the bullet - it doesn't take long. Its getting the surfaces clean that takes the time.
And putting the collets back in. I gave up after an hour and a half, and made a tool to hold the collets.
Sorted, five minutes later!
Simon