Originally Posted by psaboic

I will do that once I get a chance. My main thought is since it only does it when cold and/or under moderate load, and does NOT do it at idle and not much at all once warmed up, it isn't anything real serious like a rod or bearing knock. I guess I am looking for advice on how serious it sounds based on my description. I plan on looking into it as soon as I can just the same. I suppose it could even be just a bad batch of fuel but I kind of doubt it.