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'04 Colorado, I-5, 195,000 Miles, Smokes on startup sometimes.

Discussion in 'Chevy Colorado Forum (GMC Canyon)' started by ClydeWigg3, Aug 5, 2014.

  1. ClydeWigg3

    ClydeWigg3 New Member

    Occassional, but becoming more frequent smoke on startup, that smells like heavy exhaust. The check engine light is on. Burning oil, but runs like a champ. Made a trip of about 800 miles this weekend that was mostly highway driving and went through about 3 quarts of oil. Around town oil use is nowhere near as bad. Again, truck runs great and very quiet. Switched to full syn about 100K miles ago. I would love for someone to tell me I don't need a valve job and there is some other less expensive fix. How long can I baby this engine and add oil before something drastic happens, and/or can I change oil to prolong or help the valves??

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