Hello,
The Dorman valve cover kit has absolutely nothing to do with your start-up smoke issue.
Two things: Coolant does not cause white smoke, but will cause white steam, and you'll be able to smell the sickly sweet coolant smell at your exhaust.
White smoke is caused by burning oil and will smell like burning oil or rubber at the exhaust.
For this engine and mileage, white smoke on cold start-up is completely normal. First, you'll always have some oil leak past the valve seals, especially on higher mileage engines.
Second, the catalytic converter is not yet to operating temperature so it can't burn the oil. Once the cat is to temp, you'll not see engine emissions unless they are more than the converter can handle.
That said, why exactly did you have the valve cover gaskets replaced?
Valve seal leaks will cause an engine to smoke on start until the oil burns off. If a head gasket were leaking it would be smoking constantly.
If you need further help, reach me via phone at https://www.6ya.com/expert/james_8f14c50d9c6cdea8
SOURCE: my truck blows white smoke
white smoke is is antifreeze problem cracked head.. head gasket.. intake gasket .. pull yout spark plugs check color of plugs if one looks real clean compared to the rest that will give a point where the problem is
SOURCE: 1999 Ford F 350 7.3 blowing white smoke
Check the EGR and the fuel pressure regulator.These are very common culprits.
SOURCE: 2006 FORD F-350 6.0 115,000
Ya sounds like a blown head gasket. Look for coolant in the oil. If it looks like chocolate milk there is your problem.
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What part was installed? The white smoke is antifreeze burning or oil burning. When you are behind the vehicle does it smell like oil burning or antifreeze? If a head gasket goes bad to determine this the compression will make bubbles in the radiator with the cap off and engine running! I'd need more info on the part installed and that will tell me where to look next! thanks
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