Re: 48 JD 'B' DLTX 71 Carburetor Bowl Vent
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Posted by Gary on October 01, 1998 at 07:34:15:
In Reply to: 48 JD 'B' DLTX 71 Carburetor Bowl Vent posted by John Kerber on September 30, 1998 at 18:26:32:
: I recently bought about a 1948 all-fuel JD
: Model B (serial number plate is gone)and
: the carburetor kept flooding over even when sitting.
: After many wasted hours, I realized the bowl
: has to be vented or the gas just gets pushed out
: into the intake. I double gasketed the bowl
: and cut a slot in one of the gaskets to act as
: a vent. : Sure enough, the carb no longet floods, but
: it will not run smoothly at all. It actually runs
: smoother with the carb flooding over. : At idle, it continuosly hunts and has a sharp
: pop-pop instead of the thump-thump that I expect.
: I soaked the carb a couple days but cannot get
: what I think is the bowl vent clean(tiny hole on underside
: of main body, inside of float bowl). Also, at idle, the
: idle adjust screw has noe effect from wide open to all the
: way closed. : Is venting the bowl through the gasket causing
: me to run poorly or is something else? : Where exactly is the real vent, and where
: does it vent to? : Thanks for any help.
: john.kerber@ps.ge.com John, it sounds like you have a passage clogged in your carb. This is not unusual in these old carbs. I have successfully opened them by removing all the brass plugs in the carb. Then I soak the carb. in carb cleaner for a day or so. after that, I take a fine stainless steel wire and run it carefully through all the passages. For the over flowing problem, check the float level,the needle and seat and make sure the float is not leaking and filling with gas.
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