Merc 65 type 111 ignition still no spark

[english boy]

After posting a few topics and doing a lot of research, I (or you!!) worked out that it was either my trigger or switch box that was stopping the above engine from sparking.<br /><br />It is the 3 cylinder model with one coil (type III ignition) It would spark one day and run like a dream then the next day it would not. I had it down to the trigger.<br /><br />I took both the trigger and switchbox to be tested. The bloke at the shop let me use the analyser, the trigger tested good and the switchbox bad. I then ordered a new switchbox which I have just picked up and fitted (332-4796a).<br /><br />The bloody thing is still not sparking. The box is brand new, but could it be faulty straight from the shop? If it was working would I have voltage at the green terminal going to the coil? I think so and if I am right, how much?<br /><br />I do have 12v to red and white wire.

 

[english boy]

Re: Merc 65 type 111 ignition still no spark

All earths seem fine as well.<br />Any ideas or comments would be great.

 

[english boy]

Re: Merc 65 type 111 ignition still no spark

Could it be the coil???

 

[skeets]

Re: Merc 65 type 111 ignition still no spark

Hello english boy<br />yes..

 

[english boy]

Re: Merc 65 type 111 ignition still no spark

Hi skeets,<br />I have just tested the coil (I think I have done it right but not sure)and seem to have continuity between negative and coil tower. This means it is bad????<br /><br />Do you know if I should have current at the lead from switch box to coil? Or can it only be measured with a DVA?

 

[echozulu]

Re: Merc 65 type 111 ignition still no spark

eb, i person would lay odds its the TRIGGER in 25 yrs ive changed at least a 100 unless youve reversed polarity they are super expensive now, man i dont want to hurt your feelings but let it die it aint worth it,its like givin a80 yr old a heart transplant