Smoke on start-up
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Cargo Master
Joined: Mar 2004
Posts: 2,221
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From: CA
Smoke on start-up
2022, 7.3 and about 250 miles. On initial start-up, there's a slight puff of the blue-white smoke common with burning oil. (you can also smell burning oil) This key cycle had less smoke, but sometimes there's more. Reminds me of the old Chevy that had worn out valve guide seals, but a lot less smoke. Could be some residual "something" burning off....I'm going to keep an eye on it, but was wondering if any 7.3 owners have noticed anything like this?
New User
Joined: Jun 2021
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2022, 7.3 and about 250 miles. On initial start-up, there's a slight puff of the blue-white smoke common with burning oil. (you can also smell burning oil) This key cycle had less smoke, but sometimes there's more. Reminds me of the old Chevy that had worn out valve guide seals, but a lot less smoke. Could be some residual "something" burning off....I'm going to keep an eye on it, but was wondering if any 7.3 owners have noticed anything like this?
Hope this is gone from yours by the time you get 1K on it. Thanks for the heads up
By the way, I see you're in Newman. I'm going to Roseville to pick it up. What's that I5 looking like heading south of you to Bakersfield? Last time I came that way, looked like a good stretch to test for death wobble!
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Cargo Master
Joined: Mar 2004
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From: CA
FTE Leadership Emeritus
Joined: Jul 2002
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From: Long Island USA
Does it do it only on startup and at no other time? Of course, watch it closely, but at this point, I'd suspect it''s more about burning crap off the inside of the exhaust and catalytic converters.
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Cargo Master
Joined: Mar 2004
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From: CA
On start-up cold or after sitting awhile. And the level of smoke varies as well from a light few puffs to a descent cloud. Smelling it, I can smell both oil and fuel.
Fleet Mechanic
Joined: Jul 2004
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Sure sounds like a loose valve guide/seal. Nothing should collect in a catalytic convertor and burn off on every cold start. I would at least get the problem documented at a dealership. Wonder what the spark plugs look like.
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More Turbo
Joined: Oct 2020
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Mine has never smoked on start up.
could be a ring has yet to set but I'd have it looked at none the less.
could be a ring has yet to set but I'd have it looked at none the less.
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