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Leaky Carb
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DSeries4 View Drop Down
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Joined: 12 Sep 2009
Location: Ontario, Canada
Points: 7434 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DSeries4 Quote  Post ReplyReply Direct Link To This Post Topic: Leaky Carb
    Posted: 28 Mar 2012 at 9:47pm
I've been having a problem with the carb on my 58 D14 for quite sometime.  It leaks quite a bit of gas into the breather tube over time, as well as out of the bottom.  The carb has been cleaned, has new needle and seat, and the float is set where it should be.  Any idea what the problem could be?
Would a complete rebuild kit solve this?
 
I appreciate the assistance.
'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '61 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080
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Chalmersbob View Drop Down
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Joined: 11 Sep 2009
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Points: 2122 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Chalmersbob Quote  Post ReplyReply Direct Link To This Post Posted: 28 Mar 2012 at 10:11pm
Sounds like your needle valve isn't seating properly. Is it one with the rubber tip?
I like the steel ones. I had that problem with the newly rebuilt carb on my G. I took it off and turned it over several times and blew in the inlet tube, now it works fine. Some people like to tap the valve into the seat with a hammer when assembling. Bob


Edited by Chalmersbob - 28 Mar 2012 at 10:11pm
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Mike56073 View Drop Down
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Joined: 14 Nov 2010
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Points: 154 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike56073 Quote  Post ReplyReply Direct Link To This Post Posted: 28 Mar 2012 at 10:55pm
  This is probably not the problem, but make sure that your fuel cap is venting properly?
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acjwb View Drop Down
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Joined: 28 Oct 2009
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Points: 304 		Post Options Post Options   Thanks (0) Thanks(0)   Quote acjwb Quote  Post ReplyReply Direct Link To This Post Posted: 29 Mar 2012 at 9:06am
I had the same thing on my H-3 dozer.  I bought a new float and it has not leaked since.  I could not tell the float was leaking, but it was enough to cause problems.
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Steve in NJ View Drop Down
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Points: 11925 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Steve in NJ Quote  Post ReplyReply Direct Link To This Post Posted: 03 Apr 2012 at 11:21pm

You could have some debris lodged in the inlet canal getting though the needle valve and holding the needle valve a tic off its seat. This would let the fuel creep in every so slight. Also could be a sinking float. Pull the float out and give it a gentle shake by your ear. If you hear fuel sloshing around in the float, you've found your problem.....
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