1969 40 HP Johnson - Slow to accelerate

Joined
Oct 19, 2011
Messages
65
I just test ran this thing on the lake after its been in the shop for three weeks. Compression test was good, good spark, rebuilt carb, new fuel pump, spark plugs. It ran real good, and sounded real good, the only thing is it is slow to accelerate. It takes a good 2 minutes sometimes for it get to full throttle, other wise the engine runs and sounds good. Any thoughts? Three week old fuel? it hasnt ran this long in 8 months either.
 
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