Proper spark plug gap?
Thread Starter
Le Mans Master
Joined: Oct 2001
Posts: 5,302
Likes: 2
From: Atlanta GA
Proper spark plug gap?
I can't find any info on what I should set my gap to. I'm running 3 heat range plugs right now, but they are fouled from fuel. On the advice of several people, I'm going up two heat ranges to a 5. The current gap is .035. Should I stick w/ the same gap, or what?
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Re: Proper spark plug gap? (dtorc4)
:eek:
damn. have you checked the web sites for the spark plug makers?
according to the NGK site, fouling is caused by:
Fouling
* Will occur when spark plug tip temperature is insufficient to burn off carbon, fuel, oil or other deposits
* Will cause spark to leach to metal shell...no spark across plug gap will cause a misfire
* Wet-fouled spark plugs must be changed...spark plugs will not fire
* Dry-fouled spark plugs can sometimes be cleaned by bringing engine up to operating temperature
* Before changing fouled spark plugs, be sure to eliminate root
cause of fouling
I know some of it's a "duh", but it makes me wonder if the heat range change will not fix it... I would also try going up to .040 for the gap...
damn. have you checked the web sites for the spark plug makers?
according to the NGK site, fouling is caused by:
Fouling
* Will occur when spark plug tip temperature is insufficient to burn off carbon, fuel, oil or other deposits
* Will cause spark to leach to metal shell...no spark across plug gap will cause a misfire
* Wet-fouled spark plugs must be changed...spark plugs will not fire
* Dry-fouled spark plugs can sometimes be cleaned by bringing engine up to operating temperature
* Before changing fouled spark plugs, be sure to eliminate root
cause of fouling
I know some of it's a "duh", but it makes me wonder if the heat range change will not fix it... I would also try going up to .040 for the gap...
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Re: Proper spark plug gap? (bogus)
:eek:
damn. have you checked the web sites for the spark plug makers?
according to the NGK site, fouling is caused by:
Fouling
* Will occur when spark plug tip temperature is insufficient to burn off carbon, fuel, oil or other deposits
* Will cause spark to leach to metal shell...no spark across plug gap will cause a misfire
* Wet-fouled spark plugs must be changed...spark plugs will not fire
* Dry-fouled spark plugs can sometimes be cleaned by bringing engine up to operating temperature
* Before changing fouled spark plugs, be sure to eliminate root
cause of fouling
I know some of it's a "duh", but it makes me wonder if the heat range change will not fix it... I would also try going up to .040 for the gap...
damn. have you checked the web sites for the spark plug makers?
according to the NGK site, fouling is caused by:
Fouling
* Will occur when spark plug tip temperature is insufficient to burn off carbon, fuel, oil or other deposits
* Will cause spark to leach to metal shell...no spark across plug gap will cause a misfire
* Wet-fouled spark plugs must be changed...spark plugs will not fire
* Dry-fouled spark plugs can sometimes be cleaned by bringing engine up to operating temperature
* Before changing fouled spark plugs, be sure to eliminate root
cause of fouling
I know some of it's a "duh", but it makes me wonder if the heat range change will not fix it... I would also try going up to .040 for the gap...
Open the gap to .050, will give you a much larger exposed spark area and more power
but will also result in decreased plug life.
:seeya
:steering:
Thread Starter
Le Mans Master
Joined: Oct 2001
Posts: 5,302
Likes: 2
From: Atlanta GA
Re: Proper spark plug gap? (jackdaroofer)
:iagree: But here's an old hot rodders trick
Open the gap to .050, will give you a much larger exposed spark area and more power
but will also result in decreased plug life.
:seeya
:steering:
Open the gap to .050, will give you a much larger exposed spark area and more power
but will also result in decreased plug life.
:seeya
:steering:
