Benny1963
Lieutenant
- Joined
- Sep 17, 2006
- Messages
- 1,476
have9.9 yamaha plugs in engine are b 7 hs-10
they are 3 yrs old bout new b7hs-10s gaped correct and ran went from
21 mph on gps to 17mps on the new plugs used to start 2 pulls
now 6or 7 pulls anyone have a better solution or plug reinstlled old plugs .
gps back to20mph on 3year old plugs . anyone with same probs or sugesstions
please chime in
thanks b 1963
they are 3 yrs old bout new b7hs-10s gaped correct and ran went from
21 mph on gps to 17mps on the new plugs used to start 2 pulls
now 6or 7 pulls anyone have a better solution or plug reinstlled old plugs .
gps back to20mph on 3year old plugs . anyone with same probs or sugesstions
please chime in
thanks b 1963