Excessive white smoke, backfire. - Ford Truck Enthusiasts Forums



Excessive white smoke, backfire.

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Old 08-25-2014, 11:54 AM
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Excessive white smoke, backfire.

Pickup starts and runs fin untill about 1,800 rpms then it barrels out white smoke and back fires.
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Old 08-25-2014, 01:33 PM
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That doesn't sound too good! Check your fuel filter and see if it's all black and oily looking.
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Old 08-25-2014, 03:17 PM
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Nope fuel filter looks good, full of fuel. Changed the CPS and same symptoms.
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Old 08-25-2014, 04:03 PM
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Also Injectors and turbo has less then 10,000 miles on them. New fuel filter.
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Old 08-25-2014, 08:25 PM
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Broken valve spring or burned valve, maybe?
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Old 08-25-2014, 09:23 PM
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When you say "backfire" is it coming from the exhaust or air intake filter ?
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Old 08-25-2014, 10:56 PM
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Possibly valve spring or burnt valve. I was racing when it started.

It's coming from the exhaust. Sounds perfectly normal until about 1,800 rpms. When it starts missing at 1,800 and I let off the throttle it sounds normal then climbs to about 2,000 rpms before the rpms drop back down.
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Old 08-26-2014, 06:03 AM
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If you were racing when it happened I think I would open up the valve covers and look for a broken rocker or bent pushrod.
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