Does it matter which is carb 1,2 and 3?

perreau

Cadet
Joined
Oct 23, 2013
Messages
19
Hi Guys,

I have been looking at my carbs and they look exactly the same. Why are they numbered and why does the order matter?

Newby here :)
 

wired247

Lieutenant Commander
Joined
Oct 8, 2011
Messages
1,557
Re: Does it matter which is carb 1,2 and 3?

They are jetted differently on some motors. Some cylinders run hotter than others depending on the position, cooling system and air flow through the crankcase and the jetting helps control heat and power production from each cylinder.
 

Dukedog

Captain
Joined
Oct 6, 2009
Messages
3,508
Re: Does it matter which is carb 1,2 and 3?

If it has an enrichner they need ta be in order ta accommodate tha primin' circuit. Each has a different "bib" on it. That's tha main reason for tha V6's anyway. Has "flapper" type, disregard.............But like said, some early V6 Merc/Mariners had a larger size jet for cly 2 and 5 plus the enrichner......
 
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