# 2008 Chevrolet Silverado - Not old enough to smoke yet **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** chevrolet, silverado1500\ **Created:** [July 10, 2018, 5:31pm UTC](https://community.cartalk.com/t/2008-chevrolet-silverado-not-old-enough-to-smoke-yet/120770 "2018-07-10T17:31:37Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![Cowboystx21](https://avatars.discourse-cdn.com/v4/letter/c/9e8a1a/32.png) [@Cowboystx21](https://community.cartalk.com/u/Cowboystx21)\ **Post date:** [July 10, 2018, 5:31pm UTC](https://community.cartalk.com/t/2008-chevrolet-silverado-not-old-enough-to-smoke-yet/120770/1 "2018-07-10T17:31:37Z")
White smoke comes out of my exhaust when i first start it… Why? ---
**Author:** ![pyrolord314](https://avatars.discourse-cdn.com/v4/letter/p/6a8cbe/32.png) [@pyrolord314](https://community.cartalk.com/u/pyrolord314)\ **Post date:** [July 10, 2018, 7:36pm UTC](https://community.cartalk.com/t/2008-chevrolet-silverado-not-old-enough-to-smoke-yet/120770/2 "2018-07-10T19:36:30Z")
if it’s only when you initially start and then goes away it’s most likely condensation. If it persists after the car warms up it could be a head gasket breach ---
**Author:** ![Cowboystx21](https://avatars.discourse-cdn.com/v4/letter/c/9e8a1a/32.png) [@Cowboystx21](https://community.cartalk.com/u/Cowboystx21)\ **Post date:** [July 10, 2018, 10:38pm UTC](https://community.cartalk.com/t/2008-chevrolet-silverado-not-old-enough-to-smoke-yet/120770/3 "2018-07-10T22:38:14Z")
Thank you… ---
**Author:** ![Cowboystx21](https://avatars.discourse-cdn.com/v4/letter/c/9e8a1a/32.png) [@Cowboystx21](https://community.cartalk.com/u/Cowboystx21)\ **Post date:** [July 10, 2018, 10:41pm UTC](https://community.cartalk.com/t/2008-chevrolet-silverado-not-old-enough-to-smoke-yet/120770/4 "2018-07-10T22:41:27Z")
I noticed it happens occasionally when it’s been sitting for a few hours and I start it. ---
**Author:** ![insightful](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/insightful/32/2732_2.png) [@insightful](https://community.cartalk.com/u/insightful)\ **Post date:** [July 10, 2018, 10:46pm UTC](https://community.cartalk.com/t/2008-chevrolet-silverado-not-old-enough-to-smoke-yet/120770/5 "2018-07-10T22:46:42Z")
> [@Gsproverbs31](#): > > I noticed it happens occasionally when it’s been sitting for a few hours and I start it. Valve seals might leak a little oil into one or more cylinders. ---
**Author:** ![Cowboystx21](https://avatars.discourse-cdn.com/v4/letter/c/9e8a1a/32.png) [@Cowboystx21](https://community.cartalk.com/u/Cowboystx21)\ **Post date:** [July 10, 2018, 11:02pm UTC](https://community.cartalk.com/t/2008-chevrolet-silverado-not-old-enough-to-smoke-yet/120770/6 "2018-07-10T23:02:54Z")
I’ll have to go get it checked. Thank you. 👍 ---
**Author:** ![yellowbal](https://avatars.discourse-cdn.com/v4/letter/y/258eb7/32.png) [@yellowbal](https://community.cartalk.com/u/yellowbal)\ **Post date:** [July 10, 2018, 11:14pm UTC](https://community.cartalk.com/t/2008-chevrolet-silverado-not-old-enough-to-smoke-yet/120770/7 "2018-07-10T23:14:58Z")
Valve seals leaking would tend to have more blue smoke right? ---
**Author:** ![insightful](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/insightful/32/2732_2.png) [@insightful](https://community.cartalk.com/u/insightful)\ **Post date:** [July 10, 2018, 11:18pm UTC](https://community.cartalk.com/t/2008-chevrolet-silverado-not-old-enough-to-smoke-yet/120770/8 "2018-07-10T23:18:15Z")
> [@yellowbal](#): > > more blue smoke right? I’ve always had trouble seeing “blue” smoke, but maybe just me… ---
**Author:** ![yellowbal](https://avatars.discourse-cdn.com/v4/letter/y/258eb7/32.png) [@yellowbal](https://community.cartalk.com/u/yellowbal)\ **Post date:** [July 10, 2018, 11:26pm UTC](https://community.cartalk.com/t/2008-chevrolet-silverado-not-old-enough-to-smoke-yet/120770/9 "2018-07-10T23:26:33Z")
You’ve probably had better running cars than me. I’ve had cars with _issues_. Super rich running (caused by misfires or leaky injectors) can release white smoke. So can condensation or head gasket leak. Black/blue smoke is usually oil burning. I was burning a quart every 150 miles. On start, uphill, downhill, black/blue smoke. A little blue/white smoke on start is probably just a tiny bit of oil past the valve stem seals accumulating in the combustion chamber along with rich cold open-loop mixture. ---
**Author:** ![Cowboystx21](https://avatars.discourse-cdn.com/v4/letter/c/9e8a1a/32.png) [@Cowboystx21](https://community.cartalk.com/u/Cowboystx21)\ **Post date:** [July 10, 2018, 11:44pm UTC](https://community.cartalk.com/t/2008-chevrolet-silverado-not-old-enough-to-smoke-yet/120770/10 "2018-07-10T23:44:40Z")
Mine is just clean white smoke. Clears up quickly. ---
**Author:** ![insightful](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/insightful/32/2732_2.png) [@insightful](https://community.cartalk.com/u/insightful)\ **Post date:** [July 11, 2018, 1:02am UTC](https://community.cartalk.com/t/2008-chevrolet-silverado-not-old-enough-to-smoke-yet/120770/11 "2018-07-11T01:02:20Z")
> [@Gsproverbs31](#): > > Mine is just clean white smoke. Have someone start it and you smell the smoke. ---
**Author:** ![keith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/keith/32/5518_2.png) [@keith](https://community.cartalk.com/u/keith)\ **Post date:** [July 11, 2018, 2:20am UTC](https://community.cartalk.com/t/2008-chevrolet-silverado-not-old-enough-to-smoke-yet/120770/12 "2018-07-11T02:20:37Z")
If you live in a humid climate, this is normal. Moisture will condense in the exhaust system and vaporize when the engine is started but not warmed up yet. As soon as the exhaust gets hot enough, the smoke disappears. Also, one of the by-products of combustion is water vapor. ---
**Author:** ![Cowboystx21](https://avatars.discourse-cdn.com/v4/letter/c/9e8a1a/32.png) [@Cowboystx21](https://community.cartalk.com/u/Cowboystx21)\ **Post date:** [July 11, 2018, 9:57am UTC](https://community.cartalk.com/t/2008-chevrolet-silverado-not-old-enough-to-smoke-yet/120770/13 "2018-07-11T09:57:09Z")
Thank you…