What is the ideal voltage to a spark plug?

**FJRider** · 19th June 2015, 19:00

Originally Posted by Nobbsie

My question is if you where running say 16-18 volts to your spark plugs would there be more spark?
Would this more spark ignite the fuel better?
Which in turn would run better?

Actually ... you should expect upwards of 20,000 volts. Some reach about 40,000 ...

You don't know much about vehicle electrical systems do you .. ???

**husaberg** · 19th June 2015, 19:04

Originally Posted by nodrog

http://sparkplugmagazine.com/spark20...ue-750x410.jpg

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**Nobbsie** · 19th June 2015, 19:04

no i am so crap but im slowly getting better

**jellywrestler** · 19th June 2015, 19:22

Originally Posted by FJRider

Actually ... you should expect upwards of 20,000 volts. Some reach about 40,000 ...

You don't know much about vehicle electrical systems do you

seems you don't either, the voltage isn't that high very often as if you can't crack it with less there's another issue

**bogan** · 19th June 2015, 19:29

Originally Posted by jellywrestler

seems you don't either, the voltage isn't that high very often as if you can't crack it with less there's another issue

Right you are, to measure it that high you'd have to pull the lead off the plug; which could be an issue

To nobbsie, Voltage is just on aspect of a spark. The energy of it is another which can be visibly seen as how bright and fat (and hot)it is, and is the important bit for ignition; hence the term 'weak spark'.

**FJRider** · 19th June 2015, 19:33

Originally Posted by jellywrestler

seems you don't either, the voltage isn't that high very often as if you can't crack it with less there's another issue

https://www.gsparkplug.com/shop/how-spark-plugs-work

**jellywrestler** · 19th June 2015, 19:54

Originally Posted by FJRider

https://www.gsparkplug.com/shop/how-spark-plugs-work

and you believe that shit????? real
ity is that most electrical coils and cables simply couldn't stand that rate without their insulation breaking down, as i said, if it can't work with less voltage there's other things to sort before crowing off about how high your voltage is that's masking another issue.
try searching further if you need to.

**FJRider** · 19th June 2015, 20:09

Originally Posted by jellywrestler

and you believe that shit????? real
ity is that most electrical coils and cables simply couldn't stand that rate without their insulation breaking down, as i said, if it can't work with less voltage there's other things to sort before crowing off about how high your voltage is that's masking another issue.
try searching further if you need to.

Google the purpose of the coil.

And educate yourself.

It's not the volts that do damage ... it's the amps ... and the amps to the plugs are low.

**jellywrestler** · 19th June 2015, 20:21

Originally Posted by FJRider

Google the purpose of the coil.

And educate yourself.

It's not the volts that do damage ... it's the amps ... and the amps to the plugs are low.

bullshit, amps are current flow, volts is pressure in essence, same as water pressure, been a sparky for 38 years i should know, the higher the pressure (volts) the higher spec the components need to be to withhold the extra 'pressure'.

**ellipsis** · 19th June 2015, 20:29

...i was waiting for that...

**bogan** · 19th June 2015, 20:30

Originally Posted by FJRider

Google the purpose of the coil.

And educate yourself.

It's not the volts that do damage ... it's the amps ... and the amps to the plugs are low.

No it's the volts that do damage to insulation in HT leads, generally in conjunction with heat (provided by the engine and to a much smaller degree, the amps); and often with a grounding source coming closer than normal (wedged in frame, water running to contacts, etc).

The coil's purpose is to create a high energy spark, the voltage is simply a threshold for its creation, not a benchmark to measure the strength of what has been created.