Question about Ford F-350
Have you made sure there is power to the glowplug relay. If there is power to teh relay make sure the entire wire harness for the glow plugs is intact and there are no shorts or breaks. If all of the above are good . You can pull the plugs and bench test them with a pair of jumper cable . You will need to place the neg. clamp on the threaded part and touch the pos. clamp to the end that the wire harness attaches to for no move than 15 sec. the plug will glow red at the other end if the plug is still good. Carefully placed the plug on a non-flamable surface untill the plugs are cold. If more than 4 plugs test bad I would replace all of them at one time if you can afford that price.
Posted on Jun 27, 2009
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