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Post by KSR Moto on May 4, 2018 3:40:10 GMT -5
How to test electric choke with multimeter?
50cc gy6
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Post by scooterted on May 4, 2018 7:20:23 GMT -5
Typically people remove the choke. measure the length of the tit. Apply 12v to the connector for 5 min. Then re-measure the length of the tit, it should be longer. This is what i did.
If you must use a multimeter. Check the resistance at the two pins of the connector. Im not sure what that should be, its a heating element so it should have *at least* a few ohms.
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Post by tocoo on May 5, 2018 0:19:14 GMT -5
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Post by greginisn on May 5, 2018 0:22:24 GMT -5
Typically people remove the choke. measure the length of the tit. Apply 12v to the connector for 5 min. Then re-measure the length of the tit, it should be longer. This is what i did. If you must use a multimeter. Check the resistance at the two pins of the connector. Im not sure what that should be, its a heating element so it should have *at least* a few ohms. My choke shuts off in less than a minute, others seem to take longer. Also my motor doesn't seem to rev as high as others seem to do when the choke is on. It makes me think these little choke heaters have no real consistency regarding an ohmic value. Greg |
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Post by tocoo on May 5, 2018 1:52:40 GMT -5
Here are the results of my test on two chokes
auto-enricher from the unbridled [black lid] carburetor
ohms in retractation before the erection = 8,9ohms
time to erect [hot] = 2min
ohms in erection [hot] = 4,2 ohms
time to retract [hot->cold] = 6--7 minutes
ohms in retraction [hot->cold] = 5,7 ohms at 7 minutes ; 6,2 ohms at 9 minutes ; 6,7 ohms at 12 minutes ; 7 ohms at 14minutes ; 7,3 at 17 minutes ;
auto-enricher brand new from aliexpress
ohms in retractation before the erection = 15 ohms
time to erect [hot] = 2min
ohms in erection [hot] = 10,6 ohms
time to retract [hot->cold] = 7--8 minutes
ohms in retraction [hot->cold] = 12,3 ohms at 7 minutes ; 12,4 ohms at 9 minutes ; 12,7 ohms at 12 minutes ; 12,8 ohms at 14minutes ; 13 at 17 minutes ; 13,1 ohms at 20 minutes
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Post by GrumpyUnk on May 5, 2018 11:06:28 GMT -5
tocoo, as you can see, the qaulity contlor is exact in the China facotry. Each comes out exactly the smae.
tom
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larrball
Scoot Enthusiast
2016 Genuine Scooter Rough House Sport Ti
Posts: 295
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Post by larrball on May 5, 2018 11:39:12 GMT -5
tocoo, as you can see, the qaulity contlor is exact in the China facotry. Each comes out exactly the smae. tom Nothing comes out the same from china tom, or we wouldn't need a form like this to ask why. What we need to know is a bace line value, like what tocoo outlined. Thank you kind sir. l:)------------------------------------------------------------------------------ Here are the results of my test on two chokes auto-enricher from the unbridled [black lid] carburetor ohms in retractation before the erection = 8,9ohms time to erect [hot] = 2min ohms in erection [hot] = 4,2 ohms time to retract [hot->cold] = 6--7 minutes ohms in retraction [hot->cold] = 5,7 ohms at 7 minutes ; 6,2 ohms at 9 minutes ; 6,7 ohms at 12 minutes ; 7 ohms at 14minutes ; 7,3 at 17 minutes ; auto-enricher brand new from aliexpress ohms in retractation before the erection = 15 ohms time to erect [hot] = 2min ohms in erection [hot] = 10,6 ohms time to retract [hot->cold] = 7--8 minutes ohms in retraction [hot->cold] = 12,3 ohms at 7 minutes ; 12,4 ohms at 9 minutes ; 12,7 ohms at 12 minutes ; 12,8 ohms at 14minutes ; 13 at 17 minutes ; 13,1 ohms at 20 minutes |
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Post by GrumpyUnk on May 5, 2018 17:08:45 GMT -5
That was a joke. You were spozta smile at my obvious misspelling, etc. Just like the quality control evidenced by the varying readings. Remember, there is also a 5W resistor tagged onto the choke heating element, which may not be so well controlled. Ceramic or cement resistors are 'all over the place' as far as their accuracy. Might behoove to measure without the resistor in circuit. Or maybe that was already taken into account.
tom
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Post by FrankenMech on May 5, 2018 18:20:03 GMT -5
A resistance measurement will tell you almost nothing about the choke operation other than if the resistor or connections to it is broken. The only real test is to remove the unit, connect it to a 12VDC power source and check to see if the 'tit' physically moves as outlined by scootertedYou can google for info about how the enricher works. |
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Post by greginisn on May 5, 2018 23:06:18 GMT -5
I am surprised at the ohmic changes while heating. I would have thought a common coil was involved and not have a thermistor effect. I've yet to find that giant 5w resistor in my scoot's wiring but it haven't looked to hard for it since it all seems to work so well as it is and it starts fine at 40F and colder than that is to cold for these old bones to go riding. Think chill factor.
Greg
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