My 89 LX Carb runs rough only when the engine is cold. Once it warms up it's fine (in fact I just got back from a PASSED emissions test)
Even when it's cold it runs better when the throttle is open more than a tiny bit. Actually at full throttle it pretty much seems OK even when first started.
This makes me think it's carb related (?) but I'm not sure where to look, because despite reading this site, carbs are pretty much a mystery to me.
What specifically changes once the engine gets warm?
thanks
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