[Andygoodbloke]

Hi all
My SJ50 project is nearing completion and almost ready for its legal tests - once it goes again - my SJ50 with a G13A, electronic ignition with a coil which I think was used by the flintstones

I was working on it with the engine running - idling nicely

I had an electrical test probe and was looking for a blown fuse on the radio/stereo circuit, but thought I would test all since I was there.

I was going through and getting a circuit test positive - passing current on fuses until I reached the left hand end and a 6amp fuse when I tested it I got a positive feed on one side but when I went to the other the engine just suddenly died - as if some one turned the key off and would not start again. I also noticed the oil pressure and electrical warning lights did not illuminate when switched to on and the engine not running as they should show.

My natural instincts was to check the fuel level ( the gauge read half a tank but I have not worked out if I can trust it), and also electrical so tested feed at the coil and the valve on the carb. I have not had a chance to test these but was going to check voltage at the coil, and maybe a spark by sticking a screw driver in the HT lead to the spark plugs and looking for a spark, I am not sure how to test the carb solenoid/valve - can anyone advise or do you take out the valve and replace it with a blanking bolt to make it always open? I could hear fuel slopping around in the tank so do not think it is lack of fuel. I am unsure if the fuse testing was just bad timing or caused the issue as the fuse was not blown and no fuses were out.

Any other ideas would be appreciated
Thanks Andy

[fordem]

If the oil pressure & charge warning lights do not light when the key is turned to the on position before the engine is started, there is no probably no power to the ignition circuit. I'm not familiar with the SJ50 wiring, but most Suzukis have an IG COIL/METER fuse, and that's where I would start.

[Andygoodbloke]

Thanks Foredom
I will start there
The SJ50s are basically the same as the SJ413's just a little newer, same everything as far as I can see.
Is it a standard fuse on the board or a link or relay under the bonnet?

Thanks Andy

[Gwagensteve]

SJ413 is the model, SJ50 is the variant. Suzuki NZ made the model ID/naming convention super confusing.

Blade fuse under the dash.
Note, if you still have a factory loom there is a fusible link on the positive battery cable, it just looks like about 60mm of different cable.

This does the job of an alternator fuse.

[Andygoodbloke]

Thank you Steve

[Andygoodbloke]

Solution has been found.
I went back to the vehicle and the lights appeared on, so I cranked it over and it started after pulling the fuel back through.
It was left to idle and charge the battery while doing other small fiddly jobs.
It was taken for a road test and it went perfectly until I turned back into the drive way where it died.

This indicated to me a loose connection, so went back to where it stopped running in the first place and the bottom row of fuses on the left end (found to be a ignition system fuse) by looking at fuse covers for sale on Ebay as my one has never been seen, it had loose connections which got a thin pair of pliers and a squeeze. - problem solved.

While running some tests the resistance seemed to be high so I attached another earth strap- since putting it on the thing has never run so well or started so easily. The starter seemed to have more guts, lights brighter, more life in the battery.

Next mission is to change the coil and wire in a kill switch. - happy days, thank you Foredom and Steve for a bit of guidence

Thanks Andy