7.3 cold start white smoke issue - Ford Powerstroke Diesel Forum
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Old 11-30-2012, 01:16 AM
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7.3 cold start white smoke issue

All mods less than yr old. Engine has 12k on it. Below 50 not plugged in it takes several attempts to start. White smoke til it hits temp. When plugged in its fine. ??????

What chip setting is best for cold starts?
When at work there is no way to plug in. Any ideas
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Old 11-30-2012, 02:01 AM
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How long are you letting the glow plugs heat before cranking? You shouldn't have to plug in until It's below freezing. And white smoke is cold unburnt fuel. Sounds like you need to give the glow plugs time to warm the cylinders.

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Old 11-30-2012, 03:02 AM
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I turn it over once the wts light goes off. I had been told they start to cool back off once this light goes out?

Guess I should plug my fuel bowl heater back in? Lol
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Old 11-30-2012, 05:30 AM
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The wts light is a dummy light. The cycling period of the glow plug system is up to 2 minutes depending in temperature. Give it about 30 seconds or so and it should fire better

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Old 12-02-2012, 07:08 AM
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Yes, the light in you cab is a dummy light. It only cycles for 30 sec then turns back off. I wired up a led light inside the cab that run to the glowplug side of the glow relay. That way you know when and how long your glow plugs are on. The other reasoning of this is it will show you if your GPR is working right. Your problem used to sound like mine. I ended up having a couple glow plug not working.
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Old 12-16-2012, 01:39 AM
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I'd bet your gpr has failed and likely have bad gp's


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Old 12-16-2012, 05:43 AM
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Learn something on here daily... Didn't know the gp's were still heating once the light went out... Thanks.
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Old 12-17-2012, 08:48 AM
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If you didn't already, install the Stancor Glow Plug Relay. Mine has gone through 2 winters now and 40,000 miles and have not had a problems since installing it.
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