Carb sync on 4 stroke 50hp

[Boanyard]

Duh huh question for you master techs out there...I'm trying to sync carbs with carb tuner but can't find vacuum ports to hook the thing up to. I've heard all the horror stories about the carbs on these motors so I'm trying to do everything by the book. Any help will be greatly appreciated.

 

[carholme]

Re: Carb sync on 4 stroke 90hp

Re: Carb sync on 4 stroke 90hp

What is your engine s/n?

There should be four plugs on the side of the intake manifold, These plugs are removed and the hoses adapters provided in the carb tuner kit are installed.

Gerry

 

[Boanyard]

Re: Carb sync on 4 stroke 90hp

Re: Carb sync on 4 stroke 90hp

Thanks Gerry,
I knew i would feel like an idiot after getting a response. i stared at those shiny little bolts more than once but my brain was fixed on attaching to the carbs.

s/n OT069514

 

[carholme]

Re: Carb sync on 4 stroke 90hp

Re: Carb sync on 4 stroke 90hp

Your s/n comes up as:

MERCURY - ( 50 H.P. (2000 ))
Serial No: 0T069514 Model No: 1F50412WD

Parts Lisitng for model 1F50412WD:

40 ITALY/45 BODENSEE 50/50 BIGFOOT (4-STROKE) - Mercury, Mercruiser, Force, etc. Parts Lookup

If you need the serevice manual, send me a PM with an email address and I will send you one.

Gerry

 

[Boanyard]

Re: Carb sync on 4 stroke 50hp

Thanks again Gerry. Did the carb sync. Worked great. She purrs like a kitten, no stumbles or sneezes on acceleration but now it wont go over 3000rpm under load. played with air/fuel mixtures but no good. seems i traded one problem for another. Before i cleaned the carbs it would scream wot but not idle.
Im starting to thing I damaged a jet(s) during cleaning. ????