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gerkendave 
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Joined: 08 Jul 2013
Location: York, Nebraska
Points: 568
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 Topic: D17 IV timing problem?
Posted: 09 Jul 2017 at 7:24pm |
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Ok guys got the PTO lever fixed. Changed the plugs and let the cylinders soak in sea foam over night. The smoke problem I had seemed to go away. Father in-law wanted some small squares done for his land lord so I hooked the 17 to the NH 269 and headed his way. It's right at an hour drive with the tractor and the thing ran like a top. I think my carb is a little rich as it puffs black smoke when throttled up fast or pulling up a big hill. Get to his house and went to shut it off and the thing diesels like crazy, leading to a puff of smoke out of the intake. What am I looking at now? Timing issue? Carb issue? Valve issue? Needing guidance please.
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DSeries4
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Joined: 12 Sep 2009
Location: Ontario, Canada
Points: 7580
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Posted: 09 Jul 2017 at 8:22pm |
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Carb is set too rich.
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'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 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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gerkendave
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Joined: 08 Jul 2013
Location: York, Nebraska
Points: 568
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Posted: 09 Jul 2017 at 8:24pm |
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Could that be the sole cause of the dieseling?
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DougS
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Joined: 03 Nov 2011
Location: Iowa
Points: 2490
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Posted: 09 Jul 2017 at 8:37pm |
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Dieseling from carbon deposits because the carb is too rich.
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gerkendave
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Location: York, Nebraska
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Posted: 09 Jul 2017 at 8:54pm |
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Thanks guys. I'm not in any way a carb expert. What's the best way to adjust? And do I need to be adjusting the power screw on the bottom or idle screw in top?
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DougS
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Joined: 03 Nov 2011
Location: Iowa
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Posted: 09 Jul 2017 at 9:51pm |
Have you checked the air intake, including the air cleaner? The float level could be set too high on the carb as well. I'd buy a carb overhaul kit if the air cleaner and hose are ok.
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MACK
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Joined: 17 Nov 2009
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Posted: 09 Jul 2017 at 9:52pm |
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Timing is too fast. 25 degrees wide open. MACK
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gerkendave
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Location: York, Nebraska
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Posted: 09 Jul 2017 at 10:00pm |
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Thanks gentleman. I'll check that filter in the a.m. I'm assuming the flywheel has timing marks in it?
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Dave H
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Joined: 11 Sep 2009
Location: Central IL
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Posted: 10 Jul 2017 at 7:32am |
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That happens when the idle is too high on some motors. Not sure on yours.
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gerkendave
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Location: York, Nebraska
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Posted: 10 Jul 2017 at 7:56am |
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Thanks Dave. I'm waiting on a track cable so I'm not positive where the idle is for sure but it sounds really slow. I can try backing it down a touch more
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