Topic: 1GM10 vibration

Sounds normal to me. The only way to get a smooth idle is to add a few more cylinders.  Any multiple of 3 will do.  Three and five cylinder diesels idle quite smoothly. Yours is fine.

Re: 1GM10 vibration

mine always a little rough until 2000 rpm its just the nature of a one cylinder

Re: 1GM10 vibration

thanks, it's good to know this.

I just installed the new shaft and cutlass bearing and it works very well now. There was also some play in the old cutless and the shaft was quite a lot thinner around the cutless and the packing gland so I guess some extra vibration happenned there.


thanks again for your input.

Christian

Re: 1GM10 vibration

Hi guys,

I'm replacing the prop shaft and the cutlass bearing and I noticed some increased vibration when I run the engine in idle. If I increase the revs it stabilizes but when idle the engine moves sideways quite a bit. Some people say this is normal.
Any comments?