How have we managed all these years?

Another brilliant piece of marketing to convince you to buy something you never knew you needed but is now essential if you want to keep your street cred, along with other posers, sky high.....:rolleyes:
I've ordered a dozen for christmas presents....;)
 
Or the quaint NGK product catalogue section on giving two gaps for the B8ES, closer gap on the left and right plugs, over the center, concession for the deplorable BTZ. any gap had the aforementioned well challenged, j.

You all know you should be using wire type plug gap tool, i see you, yes you.... keep your hands above the workbench... all hiding your flat feeler gauges.... more so you Hamish... like new, not out of spec worn blades... hardly used, only on Sunday once a year, temperature calibration chart included... grin. j.
 
I watched an online video a couple of weeks ago about a Mercedes AMG engine that blew because a spark plug wasn't indexed to point in the right direction in the chamber, as a service directive required. Craziest YouTube video I ever saw.
 
iis_iis said:
Or the quaint NGK product catalogue section on giving two gaps for the B8ES, closer gap on the left and right plugs, over the center, concession for the deplorable BTZ. any gap had the aforementioned well challenged, j.

You all know you should be using wire type plug gap tool, i see you, yes you.... keep your hands above the workbench... all hiding your flat feeler gauges.... more so you Hamish... like new, not out of spec worn blades... hardly used, only on Sunday once a year, temperature calibration chart included... grin. j.
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Absolutely Jon, I have flat blade feeler blades and a plug gap set of wire type guages...

However, despite checking over many years it has been many decades since needing to adjust the gap in a new plug!!
 
I've never used anything but flat feeler gauges to do spark plugs. You just have to make sure you don't poke them in at a wonky angle. A feeler gauge greater than about 20 thou is stiff enough to use as a tool to pry the gap open a bit. Only mild tool abuse. I've never used a hammer to close up the gap. I just tap the electrode against something thick and dense, like my head.
 
....the only ignition system that struggles with variable gaping is inductive discharge, as a guide. That is most of what is applied these days, including iis in the day, though we had the CDI variant which could strike a gap of up to more than 10mm.

Overall the gap is not too critical, given the most demanding instance is cold cranking, sagging battery/system voltage, at lower temperatures, rich mixture. Up to 1mm should be a working gap.

Cam..."no wire form gapping tool for me thank you.. am a non believer..." a laugh here, j.
 
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