[bassballer]

Originally Posted by zacs

how old are the plugs?
Turn her on, let her run at idle in the driveway with muffs for a while and come up to temp.
turn off, cool down, replace plugs (& filters if you haven't already.)
Take her for a test spin not too far from the ramp and see how she runs. give her a few nice wide open runs. If you are noticing performance issues at that point, bring her in.

assuming you changed gear oil in winter. if not, change now.
assuming your impeller & tstats are changed last year or this. if not, do it now.

if she runs well you just saved yourself 3-5 bills. if not, you still saved yourself 3-5 bills, you just have bigger issues at hand...
JMHO

This sounds like a plan. Picking up the filters and new plugs this week.