White smoke

Hello,

Does the white smoke has a 'sweet' smell to it? If so it means the engine is burning coolant.

Here is a helpful article on white smoke:

https://www.2carpros.com/articles/white-smoke-or-steam-coming-from-the-exhaust-pipe

This can happen by one for four ways the most popular failures is a blown head gasket which can be tested for.

https://www.2carpros.com/articles/head-gasket-blown-test

https://youtu.be/5zpNjYmmiYY

Additional causes include a cracked cylinder head or engine block or the intake manifold gasket failure. Many times you will get white smoke if the engine overheats.

Please let me know what you find or if you need any additional information.

Thank you.

For the code P0302 and P0303 are typically for ignition systems (i.E Spark plugs or coils).
It would be a reasonable to step to get the plugs changed.
Did the plugs have white residue on them?

Good morning,

White smoke is an indication of burning coolant. If you had a misfire on a cylinder, you would have black smoke.

I would have a leak-down test done on each cylinder to see if it is the head gasket leaking. You remove the spark plugs and add shop air into each cylinder and watch for bubbles in the radiator assembly.

The truck does not have to overheat to have a failed head gasket.

Roy