SeaRayClyde37
Seaman Apprentice
- Joined
- Jul 26, 2014
- Messages
- 33
THE FAMOUS 460. I have an 86 or 87 Mercruiser 3.7 170 in a Sea Ray. Last summer It ran awesome until the starter burned up. Then the Fuel Pump decided not to work. Since I bought it I have rebuilt the carb, replaced the starter, and replaced the fuel pump with an electric fuel pump. My first issue was the Starter. It smoked so I replaced it. Next the mechanical fuel pump went out. Put an electric one instead, along with rebuilding the carb while I was at it and replacing fuel filters. It doesn't have a syphon valve at the tank pickup. Then soon after points went out. Replaced them. It runs great except for at higher rpms say around 3000. It starts to stumble...the first thing I'm going to do is replace the plugs. After the carb build and before the points it was backfiring a lot and running like crap. Maybe I fouled one before points and timing was set. Any advice after plugs??? Maybe too low of PSI on fuel pump? Guess I should double check that...