HackAbuse's Car is Down
New Member
Joined: 02-22-07
Posts: 58
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From: Hagrerstown MD
New Member
Joined: 02-22-07
Posts: 58
Likes: 0
From: Hagrerstown MD
dont know for sure i think with bosch the problem is that the gap is preset . i dont know if its too much or too less . but with ngk you gap those yourself and you have control over in terms of the gap. Im not familiar with whether adding more gap adds more spark or less . If someone here knows plz post for others to learn from
Senior Member
Joined: 02-23-07
Posts: 1,120
Likes: 0
From: Orange, CA
You want to run the widest gap possible without having the spark blow out.
The larger the gap, the more area for the spark to travel across, igniting more fuel faster. Although when the gap gets too large, the spark can no longer jump across the gap. A small gap is beneficial for someone who doesn't want to have to worry about checking their plugs every week or two.
It does sound as if the Bosch have a huge gap, and to counter the spark blow out, they up the heat alot. This would burn out the coils.
To answer your question, plug gap does not change the spark intensity, just the distance that the spark travels.
The larger the gap, the more area for the spark to travel across, igniting more fuel faster. Although when the gap gets too large, the spark can no longer jump across the gap. A small gap is beneficial for someone who doesn't want to have to worry about checking their plugs every week or two.
It does sound as if the Bosch have a huge gap, and to counter the spark blow out, they up the heat alot. This would burn out the coils.
To answer your question, plug gap does not change the spark intensity, just the distance that the spark travels.
New Member
Joined: 02-22-07
Posts: 58
Likes: 0
From: Hagrerstown MD
You want to run the widest gap possible without having the spark blow out.
The larger the gap, the more area for the spark to travel across, igniting more fuel faster. Although when the gap gets too large, the spark can no longer jump across the gap. A small gap is beneficial for someone who doesn't want to have to worry about checking their plugs every week or two.
It does sound as if the Bosch have a huge gap, and to counter the spark blow out, they up the heat alot. This would burn out the coils.
To answer your question, plug gap does not change the spark intensity, just the distance that the spark travels.
The larger the gap, the more area for the spark to travel across, igniting more fuel faster. Although when the gap gets too large, the spark can no longer jump across the gap. A small gap is beneficial for someone who doesn't want to have to worry about checking their plugs every week or two.
It does sound as if the Bosch have a huge gap, and to counter the spark blow out, they up the heat alot. This would burn out the coils.
To answer your question, plug gap does not change the spark intensity, just the distance that the spark travels.
New Member
Joined: 10-16-07
Posts: 134
Likes: 0
From: Ohio
i was wondering the same thing. I've always just ran plain jane plugs in all of my cars with no issues at all. What exactly are +4s supposed to do? is it the ZOMG IT HAS 4 METAL THINGYS ON IT...DIS WILL SPARK HOTTER AND GIVE ME UBAH POWAH!!?
Senior Member
Joined: 11-10-05
Posts: 13,359
Likes: 5
From: TX
all the splitfire and +4 things are marketing jargon. they dont do **** for your car. stay with autolite or ngk plugs. bosch +4's are just a parts stores way of giving it to you up the ass. my father in law tells people to take them out of their cars if they come in with them.
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