Looks like I've killed my CDI+

[Peter Wilson]

Hi Jonny,

I think I may have killed my CDI+ (serial #1000). I was doing some CIS flow balancing and pulled the coil HT wire to ensure no sparks were going to happen when the ignition was on to energise fuel pumps, and I had measuring cylinders and fuel everywhere. The engine was never cranked in this configuration, but after reassembly I have no spark. The CDI+ is still powering up correctly and still does the tacho sweep, but it looks like the HT side is not functioning. The car ran fine when original Bosch CDI was swapped back in.

So my questions are:

1) Do you offer a repair service for CDI+ units?

2) Is this failure mode common/simple enough for you to be able to advise on how to repair locally? The unit has never been opened.

Many thanks, Peter.

[Peter Wilson]

More info... I remember that I also did a compression test and suspect that the coil lead may still have been disconnected. In which case I committed the bad mistake of powering CDI and triggering it with no secondary circuit resistance...

[Jonny Retrofit]

Yes, we can investigate and repair.   Please send the unit to us. 

[Peter Wilson]

Thanks Jonny. In the time since my post, I took the unit to a friend who runs an electronics repair business. They were able to identify and replace a surface mount IC which was the culprit, and the unit is now happy as ever. Between us we also made a test rig for the CDI unit to do some burn-in testing. I could probably get them to provide the part details if that is of use to you in diagnosing and repairing similar failures in the future? Regards, Peter.

[Jonny Retrofit]

Hi Peter, that is good to know and apologies your post slipped through the net.

 

 

[Jonny Retrofit]

29 minutes ago, Jonny Retrofit said:

Hi Peter, that is good to know and apologies your post slipped through the net.

I have DM'ed you.