How many Volts???

[audi321]

Ok, so I've got a weak spark from my XP 657. I just wondered what voltage I should be getting both sides of the coil?

I'll check again tomorrow, but IIRC I think I was getting 32v and 24,000v at each side of the coil. Obviously 24,000v isn't enough to get the spark plug to spark properly.

What is the normal output for a decent spark from the plug? Can you buy 'special' spark plugs which don't need as many volts to spark?

Thanks for any help guys.

 

[- BiRkS_]

Normally you check the coil via Ohm readings. However I would trim back your plug wires 1/4'' and re-install the plug boots. Also, make sure your coil is properly grounded and there is no corrosion on the mounting bracket and the block.

 

[audi321]

Cheers, I've replaced the Plug and HT lead so I know these are ok. I'll check the grounding of the coil tomorrow too.

 

[audi321]

I've checked the earth on the coil and all looks fine. Can anyone help with what Voltage I am supposed to be getting at both sides of a coil? I guess any engine will do? Just so I know if I'm in the ball park with the readings I'm getting.

Cheers all

 

[audi321]

I've checked the earth on the coil and all looks fine. Can anyone help with what Voltage I am supposed to be getting at both sides of a coil? I guess any engine will do? Just so I know if I'm in the ball park with the readings I'm getting.

Cheers all

 

[Robj]

Make sure the plug is gapped correctly. I think it needs to be at 20 thou.

 

[Minnetonka4me]

Unfortunately their isnt a good way to check components on the XP with 5 wire stator. If there is a small black box bolted to the same screw as the coil. its the 5 wire setup.

If it happens to be a 4 wire setup its a easy diagnosis procedure.