225 Opti drooping rpms

jeffrey.bean

Seaman
Joined
Jan 12, 2008
Messages
60
Hello all,

Yesterday I was out on my 23' Pro-Line WA, ( bought it this past Sept.) it's powered by a 2003 225 Optimax with approx 650 hrs. At about 4500 rpm's it would drop 20-30 rpms for a second or two, then jump back up with out me touching the throttle. It would do this at random, I dropped down to 4100 rpm's and didnt experience the problem.

I just replaced the fuel filter/ water seperator, there are 2 or 3 in-line filters that I havent changed.

I have a 140 gal fuel tank that had 90 gal.( told it was treated) in it when I purchased the boat in Sept. I have since added 55 gal to the tank with quickleen and startron. I was told the 90 gal was put in this past spring.

I plan on changing the in-line filters this week, any other ideas?

Thanks,
Jeff
 
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