Hello All,
I'm kind of new to the vintage tractor thing and have just take over a part restored B275 that had already had some work to the cylinder head (skimmed and valves re ground) but on turning the engine over by hand it seemed to be loosing compression past 2 of the pre combustion chambers (obvious hissing) so I figured that the upper and lower injector seals needed changing.
As the pre combustion chambers could not be removed externally. I had to remove the head to push them out form the inside (they were held in pretty tight with some sort of sealant around the sides). anyway...once removed (all 4 of them) the were cleaned up and replaced with new upper and lower injector seals but I saw no reason to use extra sealant. Which brings me to my problem..... I now seem to have poor compression (turning engine by hand) on all 4 cylinders, but no apparent hissing past the pre chambers
So what went wrong? should I have used sealant around the Pre chambers, as I had found it? or if the valves had been put back in different positions during when I re assembled the head, could that be the cause? ...although they seemed air tight.
Any other possible issues?
Any advice for a newbie very welcome......
I'm kind of new to the vintage tractor thing and have just take over a part restored B275 that had already had some work to the cylinder head (skimmed and valves re ground) but on turning the engine over by hand it seemed to be loosing compression past 2 of the pre combustion chambers (obvious hissing) so I figured that the upper and lower injector seals needed changing.
As the pre combustion chambers could not be removed externally. I had to remove the head to push them out form the inside (they were held in pretty tight with some sort of sealant around the sides). anyway...once removed (all 4 of them) the were cleaned up and replaced with new upper and lower injector seals but I saw no reason to use extra sealant. Which brings me to my problem..... I now seem to have poor compression (turning engine by hand) on all 4 cylinders, but no apparent hissing past the pre chambers
So what went wrong? should I have used sealant around the Pre chambers, as I had found it? or if the valves had been put back in different positions during when I re assembled the head, could that be the cause? ...although they seemed air tight.
Any other possible issues?
Any advice for a newbie very welcome......