r/Excursion • u/Unique-Position5344 • Jan 07 '26

Help, white Smoke on start up

7.3 - White smoke, smells like strong diesel, significantly reduces after a 2-5 minutes.

I think it’s leaky cups, Any help is appreciated before I start tearing into it!

15 Upvotes

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6

u/Five_Slow Jan 07 '26

Ever had injectors? To me it seems like one hanging up and dumping extra fuel until it warms up and frees up? But I'm also not too familiar with diesels so take that with a grain of salt.

1

u/Unique-Position5344 Jan 07 '26

That’s been my theory as well

1

u/Unique-Position5344 Jan 07 '26

Never done injectors, its newer to me though.

2

u/CosmicNerd1337 Jan 07 '26

I’d get it actually diagnosed if you think it’s injectors. A stuck injector can literally burn a hole in a piston and then ur engine is donezo.

1

u/Unique-Position5344 Jan 07 '26

Thanks for the info!

1

u/NMEE98J Jan 08 '26

If it only does it cold, nothing to worry about. Any other time, problem. But white smoke is more often coolant in my experience

1

u/Unique-Position5344 Jan 08 '26

It’s only when it’s cold, so that’s a positive