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Discussion Starter #1
When I started my truck cold today..it puffed blue smoke when it started..What does blue smoke mean..It doesnt smoke when idling just when it started.. Thanks
 

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Mine did the same thing... Injectors
 

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nhraracer90;1569368; said:
When I started my truck cold today..it puffed blue smoke when it started..What does blue smoke mean..It doesnt smoke when idling just when it started.. Thanks

Let me guess, it was cold out? 20 degrees or colder. Fuel enrichment smoke when cold is normal. It warms up, the fuel volitalizes and burns clean - no smoke.

At -15F it does it for longer....
jb
 

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Discussion Starter #4
Yes it was cold out, but it just has never done it before..I thought fuel enrichment or something like that would be black smoke instead of blue. Thanks
 

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my 02 started to do the same thing as well as the injectors getting noisy. ended up being injector replacement time. Good luck!!!!
 

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Blue smoke is oil burning, black smoke is un burned fuel and white smoke is water
 
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