Spark Plug Gap - NGK Spark Plugs - Tech Video

Correct way to check, set and adjust your spark plug gap. NGK Spark Plugs USA.

Category:

Autos & Vehicles

Tags:

• Gapping
• Spark
• Plugs
• Tech
• Video

[dusch888]

ngksparkplugsusa,

I have a 2000 ski-doo mxz snowmobile that occasionally backfires on warm startups. Does this have anything to do with my NGK spark plug spark gaps? Timing? what else should i check? Thanks.

[ngksparkplugsusa]

@dusch888

This backfiring condition could have to do with timing or possibly fueling issues or maintenance issues. Generally backfiring will not have to do much with the plug unless it is gapped incorrectly.

[ngksparkplugsusa]

@fetymann

A coin style tool should be sufficient to find the approximate plug gap but a feeler gage or wire-style tool is preferred.

[insylem]

How do you close the gap? He never shows how. Only how to open?

[ngksparkplugsusa]

@insylem - Thanks for the question. This is highlighted @ 1:26. It shows how to adjust the gap with the correct tool.

[undertake782]

Hey, I would like to ask how you would know if your engine is misfiring as a result of plugging the spark plug wires in the wrong configuration? My dad has a 1995 Ford Explorer and the RPMs go up and down a bit about 200 RPMs when you first start it but you don't really notice it or it stops after about 2 minutes. Is that normal? I am just worried I might have plugged the spark plug wires with the wrong cylinders. Thank you.

[ngksparkplugsusa]

@undertake782

If you had switched the plug wires around you’d likely have a misfire that wouldn’t go away and it’d be felt under all conditions especially under throttle. It sounds like what you may be experiencing are issues with the idle air control valve or IAC. Sometimes these valves can get plugged with carbon and cause the symptoms you’re seeing. You may be able to clean the throttle body with a carburetor cleaner and help it to run more smoothly on the cold startups.

[hundredprizm]

most iridium plugs come pre gapped

[fatchrome]

Great Tech Video. Great help to a Spark Plug replacement NOOB/ VIRGIN like myself. Thanks Again :)

[sjagain]

how much resistance should there be when using a wire gapper?

[DubNubin]

I see that you guys show a NGK spark gap gauge tool that is fold out in this video...but i am unable to find this anywhere for sale. I would like to purchase one like this, can it be purchased?

[fatchrome]

Oh and yes I bought NGK's.

[abunaiN1]

@MrSnakeaholic hahah lool just be careful i made custom tool my shelf it works fine !

[MrSnakeaholic]

@abunaiN1 i just broke one.....lol

[abunaiN1]

@MrSnakeaholic i'll be careful !!

[MrSnakeaholic]

@abunaiN1 you can break the iridium tip