Hey guys. I have an old IH 2606 backhoe with the 236 diesel.
Last year I had the injection pump rebuilt by Rich here on the forum and it works great.
My only issue is the tractor runs with a "miss" unless you leave the glow plugs on all the time. It sounds just like a gas engine that lost spark to one cylinder. RPMs drop about 50 rpms once glow plugs are off too. Flip the glow plugs back on and it will pick right up and sounds good.
I know this tractor was probably road hard in a past life, so the engine is tired, but for as little as I use it I don t see a need to rebuild it. Wondering if this could be something simple maybe? I haven t had the injectors out, but don t these have some kinda odd pre combustion cup? Could one of those be messed up? It seems like it has to be something simple if turning the glow plugs back on can "fix" it
Last year I had the injection pump rebuilt by Rich here on the forum and it works great.
My only issue is the tractor runs with a "miss" unless you leave the glow plugs on all the time. It sounds just like a gas engine that lost spark to one cylinder. RPMs drop about 50 rpms once glow plugs are off too. Flip the glow plugs back on and it will pick right up and sounds good.
I know this tractor was probably road hard in a past life, so the engine is tired, but for as little as I use it I don t see a need to rebuild it. Wondering if this could be something simple maybe? I haven t had the injectors out, but don t these have some kinda odd pre combustion cup? Could one of those be messed up? It seems like it has to be something simple if turning the glow plugs back on can "fix" it