got a new glow plug & put on new battery cables . it will now start after 5 minutes of glowing & cranking oh i also adjusted the valves ( went fine after i got the wrenches bent. 0
SO HERE IS THE PROBLEM THE GLOW PLUGS CONTINUE TO CYCLE WHILE RUNNING. I KNOW THIS BECAUSE THE RESISTER WIRES GLOW RED THEN SHUT DOWN THEN GLOW RED .
question is this the key switch or the glow relay?
HELP!!!!!

JOHN M