Last year my check engine light went on. Went to dealer and was told I had a bad glow plug but it was not necessary to fix it right away and when I did I should just do all 8 since if I had one bad o...
My old Perkins 4-cylinder had 3 plugs go out before I had cold weather starting problems and I diagnosed the failure. I kept thinking I was measuring something wrong with that many out, but it was simple job on that engine to replace those three.