Low RPM on 08 Merc opti 150 and now starting to miss (hickup)

Rodrunner

Petty Officer 3rd Class
Joined
Mar 2, 2008
Messages
77
Hi everyone. Normally my motor runs at about 5300-5400 RPM (on my gauge) Got it out this spring and now can only get 4200 RPM out of it. Had it out again yesterday and noticed a tiny little hiccup (for lack of better term) every so often while running up the lake. was pretty subtle and only for a split second but did it several times. I use good fuel and add marine stabil. Can anyone tell me what may cause either of these issues and if they are related? thank you very much.
 

Rodrunner

Petty Officer 3rd Class
Joined
Mar 2, 2008
Messages
77
I could sure use some opinions on this issue. I'll add that the hole shot is great and it planes out quickly. Just not gettig the RPM and speed i used to get.
 

quicktach

Petty Officer 1st Class
Joined
Aug 24, 2012
Messages
394
I'd stop using the marine Stabil...not needed if you use fresh decent octane gas. Make sure plugs are clean. may want to check throttle linkages to make sure nothing's loosened up
 
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