marine carburetor?

biggjimm

Chief Petty Officer
Joined
Jul 15, 2015
Messages
403
As I was priming my carb today before trying to fire it up for the first time in a couple seasons, it dawned on me that the vent tube did not bend over & point into the throttle bore, as I was filling the float bowl via the straight vent tube. The part # on the mercruiser tag & the stamped code # all check out to be for the year, model & serial # of the engine & the picture in the Sierra catalog of their replacement is the same as mine so I guess I'm ok. I just figured they all had the "J" type vent tubes, but apparently not. Scared me, I thought I was going to have to by a new carb.
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,357
Ayuh,.... 'n J tubes are I believe a Holley thing,....
 

biggjimm

Chief Petty Officer
Joined
Jul 15, 2015
Messages
403
The fuel pump will fill the bowl on it's own. No need to prime it.

I had just put a new fuel pump on & cleaned the fuel tank & replaced the lines & did not want to crank & crank until the pump pulled fuel through 16' of fuel line on an engine that had not been started in 2 years. So I prime the carb & she'll fire right up.


Thanks bondo, I guess I just assumed it was a "coast guard approved/marine thing" for safety.
 

Grub54891

Admiral
Joined
Jun 17, 2012
Messages
6,404
I had just put a new fuel pump on & cleaned the fuel tank & replaced the lines & did not want to crank & crank until the pump pulled fuel through 16' of fuel line on an engine that had not been started in 2 years. So I prime the carb & she'll fire right up.


Thanks bondo, I guess I just assumed it was a "coast guard approved/marine thing" for safety.

I see....
 

NHGuy

Captain
Joined
May 21, 2009
Messages
3,631
and my Quadrajet has a straight one. There are many versions!
 
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