Erratic Idle RPM's and stalling when up to temp
#11
12-29-2016, 01:36 AM
Curious as to how you made out..
If you want to see if it's running lean or rich you can hook up a Propane bottle to a vacuum port on the intake and slowly crack the valve at idle, If the idle goes up then it's running lean. If the idle goes down, it's running rich...
When the idle circuit is adjusted properly it should increase 50 rpm with a slight amount of propane..
If you want to see if it's running lean or rich you can hook up a Propane bottle to a vacuum port on the intake and slowly crack the valve at idle, If the idle goes up then it's running lean. If the idle goes down, it's running rich...
When the idle circuit is adjusted properly it should increase 50 rpm with a slight amount of propane..
#12
12-29-2016, 05:59 AM
Seasoned HDF Member
This is how we did it when I was a Chrysler Mech....
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skinman13 (12-31-2016)
#13
01-03-2017, 04:46 PM
Your factory needle is not adjustable so that needle is not stock. Could be an issue. If it is the dynojet needle and emulsion tube then good luck tuning that junk. Not saying it is, but heads up, their jets don't match Harleys and the threads are different.
You plugs look sooty (black fluff on the plug base). It is clean where the spark occurs, but that base circle is sooty and to me that says rich.
Take a look at the stickeys for plug reading. I like this diagram:
http://sbftech.com/index.php?action=...0;attach=37284
This is a good read also:
http://www.crankshaftcoalition.com/w...ng_spark_plugs
YD
You plugs look sooty (black fluff on the plug base). It is clean where the spark occurs, but that base circle is sooty and to me that says rich.
Take a look at the stickeys for plug reading. I like this diagram:
http://sbftech.com/index.php?action=...0;attach=37284
This is a good read also:
http://www.crankshaftcoalition.com/w...ng_spark_plugs
YD
Last edited by Yankee Dog; 01-03-2017 at 05:22 PM.
#14
01-03-2017, 05:10 PM
Seasoned HDF Member
Your factory needle is not adjustable so that needle is not stock. Could be an issue. If it is the dynojet needle and emulsion tube then good luck tuning that junk. Not saying it is, but heads up, their jets don't match Harleys and the threads are different.
You plugs look sooty (black fluff on the plug base). It is clean where the spark occurs, but that base circle is sooty and to me that says rich.
Take a look at the stickeys for plug reading. I like this diagram:
http://sbftech.com/index.php?topic=30469.0
This is a good read also:
http://www.crankshaftcoalition.com/w...ng_spark_plugs
YD
You plugs look sooty (black fluff on the plug base). It is clean where the spark occurs, but that base circle is sooty and to me that says rich.
Take a look at the stickeys for plug reading. I like this diagram:
http://sbftech.com/index.php?topic=30469.0
This is a good read also:
http://www.crankshaftcoalition.com/w...ng_spark_plugs
YD
Good find YD....
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