TOPIC: Merc 650

Merc 650 12 years 2 months ago #66191

tim_c
Offline
Junior Boarder
Posts: 87
Karma: 11
Thank you received: 0

I have a mid 80s merc 650 3 cyl that has me baffled. It runs perfectly from 3/4 to WOT & idles nice & runs well up to about 1/4 throttle. But between 1/4 &3/4 throttle It just quits. Anybody ever run into anything like this ?? BTW the carbs & fuel pump are rebuilt & all lines have been replaced & the ignition tests OK.
Tim

Please Log in or Create an account to join the conversation.

Re:Merc 650 12 years 2 months ago #66275

JetDeville700 Offline Platinum Boarder Posts: 3271 Karma: 38 Thank you received: 3	Tim, any chance the fuel pump valves are worn or warped? That might do it. When the carbs were rebuilt, new floats? I'm putting new ones in my 1350 carbs. Good luck! Frank Check this box to be notified of replies to this topic. Note: BBcode and smileys are still usable.
	Please Log in or Create an account to join the conversation.

Re:Merc 650 12 years 2 months ago #66285

tim_c Offline Junior Boarder Posts: 87 Karma: 11 Thank you received: 0	Yup all that stuffs new. Think it's got to be something with the ignition. Link & sync . I also misspoke it's a 1989 60 with ADI ignition. Check this box to be notified of replies to this topic. Note: BBcode and smileys are still usable.
	Please Log in or Create an account to join the conversation.