Posted By: sae
Merc 90 h.p. 3 cyl. 2009 - 06/14/18 01:31 PM
Just bought ,changed plugs ,champions, tpo rpm 4000 on a 18 ft pontoon.
Changed to nkg plugs top r.p.m. 2200?.
help please.
Posted By: Pat Goff
Re: Merc 90 h.p. 3 cyl. 2009 - 06/14/18 11:12 PM
You’re running on two cylinders. Recheck your plug wires.
Posted By: sae
Re: Merc 90 h.p. 3 cyl. 2009 - 06/17/18 03:37 PM
Thank you Pat,did a compression test,no1 -zero!
Posted By: Pat Goff
Re: Merc 90 h.p. 3 cyl. 2009 - 06/17/18 04:02 PM
Well that would sure do it right there, sorry to hear.