Thanks for your inputs Troy. I forgot to say that the first thing I did was change the glow plug and that's not the problem. The sputtering I am talking about is of the lean kind, not the rich kind. That much I am sure of. Now that you mention it, I do think it may be the injector check valve. I recall it being a little loose when I started having this problem. I just tightened it by hand andforgot about it. I will check on it tomorow and let you know what I find. Is the checkvalve inside the black plastic housing or is that the checkvalve itself? Any way to repair this or do I have to replce it? Thanks a lot.

Jayjay