Question about 1988 Ford F 350

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When I turn igition on my 88F-350(7.3 diesel), I have smoke coming from the 'glow-plug' relay(where the ground strap attaches from relay) when first turned on and while cranking engine.The wires do get hot and the insulation burns for a bit. The engine is also very hard starting after 24hrs,but tarts easily when warm. Any way to test the 'relay' before buying a replacement?

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Put it on a push button that way you know it gets tne right amount of power

Posted on Feb 03, 2009

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glow plug wire harness under valve covers often deteriorates causing no glow plug heating. The connectors and wire terminals are available from Ford as a kit or individually. Do not replace the harness. $600!
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