Logo
FULL SITE MENU

Carburator problems.

F

Fisherman_7

Member
I don't know what is going on with this carburetor, but here it is, please tell me what's wrong? Had rebuilt the carburetor's with new kits, cleaned and put back together according to instruction video. I have a 1984, 115hp, V4 Evinrude. It has two carburetors, 1 on top, 1 on the bottom. When I squeeze the gas primer bulb that connects to your engine. Gas starts flooding out of the bottom carburetor. Now before you tell me the float is not adjusted right. I have had this carburetor off 5 times already, to re-adjust the float level, less or more either way, and nothing I do will keep the gas from flooding out of the carburetor. This problem has got me baffled. Can anybody give me some suggestions on what is wrong. Oh one more thing, I did try a different Carburetor with a new kit in it, and it still does the same thing. Never seen nothing like it. Thanks
 
Hvaing two (2) carburetors do the same exact thing only means that one of three (or all) causes exist in the two carburetors. The thing to do is to concentrate on one carburetor until the cause of the problem is found and eliminated.

The causes of having a carburetor are:

1 - The float needle valve assembly is faulty (usually a scored tip).

2 - The air vent from the float chamber to the outside atmosphere is clogged at some point (if air can't get out, fuel can't enter the float chamber).

3 - The float is not set properly (see below).

(Carburetor Float Setting)
(J. Reeves)

With the carburetor body held upside down, the float being viewed from the side, adjust the float so that the free end of the float (the end opposite the hinge pin) is ever so slightly higher (just ever so slightly off level) than the other end. And when viewed from the end, make sure it is not cocked.

Thousands of parts in my remaining stock. Not able to list them all. Let me know what you need and I'll look it up for you. Visit my eBay auction at:

http://shop.ebay.com/Joe_OMC32/m.html?_dmd=1&_ipg=50&_sop=12&_rdc=1
 
I was about to suggest a bowl vent problem till I saw that you tried another carburetor. Joe listed the common problems. Obviously, you do not have a common problem. It would be very difficult to figure it out from here. You aren't "standing" on the bulb, are you? Nah, you wouldn't.
 
What is the position of the red lever on the primer ?------------Is the motor tilted up slightly.----I am curious how these carburetors could both leak and not the top one.
 
I am going to check the red lever that is connected to the auto choke solenoid. I think it is pointed in the right direction but I will see if that does anything. Where is the air vents located for these carburetors? Because where the air is suppose to go into the carburetors in front, is where the gas is flooding out of them. Top carburetor is fine, seats fine, just the lower carb I am having fits with. I will check the red lever though.
 
The RED lever on the primer solenoid should be pointed straight at the other end of the solenoid body (closed/automatic position). If the lever was in the manual position, fuel would be flowing freely to both carburetors when you pump the fuel primer bulb.

The float chamber air vent.... look closely at the bottom area of the upper body, you will see a hole there which is the entrance to the vent passageway. The outlet hole varies with the different carburetors but I'm sure you'll figure that out. You should be able to physically blow pressure thru a piece of fuel line hose into that hole and feel it escaping via the outlet hole.

Not likely that the following is your problem but it's worth mentioning.... there have been occasions where a boater would install the float upside down and this would surely cause the unit to flood. The small flange at the end of the float hinge should be pointing at the upper body.
 
Last edited:
Back
Top