More bad OMC coils made in China

[DAN UMBARGER]

Just another heads up for you all…had ordered a pair of Zhongfa Tec coils on Amazon and neither of the coils work and only one of the coils allows the good original coil to spark while the other wont. Am sending them back and gonna try some coils from BRP…hopefully they will work.

[Mumbles]

Your posts title says ‘More Bad Coils’ so have you had bad Zhongfas before?

I’ve purchased close to a hundred of them over the last few years straight from China and haven’t had a failure yet.  I trust the rest of your motors electrical system was up to snuff or replaced at the same time.

[crosbyman]

never really had issues myself….

I find their  secondaries high like  8-9 kohms  but in theory more  windings the better or…. they use smaller  wire diameters  which produce a higher resistance overall.

Cheaper thinner  wire would not suprise me  one bit  seeing how they would skip on parts quality  and metal thickness  on bicyle my son had made in China for a large  store company

but….more  and closer turns may increase chances  of insulation jumping but so far so good …

 

anybody  ever check old coil secondary wire size  to the chineese coils ??

Joining AOMCI has priviledges 🙂

[DAN UMBARGER]

No Mumbles I haven’t purchased any of the Zhongfas coils before but have read that other Chinese coils have been bad. I did install a new tune up kit and neither coils worked when installing them…played around for several hours swapping parts. Can get one of the original coils to work and it will only work with one of the new coils installed but not the other…swapped condensers and still the same results. Also checked the coil wires and they are clean and check fine with an ohm meter. BRP coils are coming so we’ll see how that works. Crosbyman…secondaries on the new coils were 8.5 on both and primaries were 1.1 on one coil and 1.8 on the other. The good original was 4.5 and .8  and the bad original was infinite and .8 hopefully I’m not missing something STUPID !

[crosbyman]

I had a similar issue on a 6hp Fisherman about 3 years ago  and was going nuts swapping parts.   Never did find out why I lost ignition  but suddenly  it all cleared up.  go figure.

Carfull with condensers unless they are tested at high voltages as in the M.Mohat test box  you may have bad old or new condensers

 

take a  break…… leave evrything aside…. and  rebuilt the ignition  at a later day.    clean clean clean points

Joining AOMCI has priviledges 🙂

[Mumbles]

The spring terminals inside the plug boot which snap onto the sparkplug can cause issues as they can get cotrroded and loose contact with the core wire, They may pass an ohm reading but wont have enough contact to carry the volts needed to fire the spark plug.  It might be an idea to slide the boots back and see how everything is in there. 

[Mumbles]

That tank photo wasn’t supposed to show up. One more attempt.

[Mumbles]

Once more tryafter changing the name.

[Mumbles]

Time to put the mouse away for the night…..

[opposedtwin]

Mumbles wrote:

Time to put the mouse away for the night…..

🤣🤣🤣

[Author]

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