spark plugs
- Thread starter bubba 10
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greasefingers
New member
You could conceivably stick six different manufacturer plugs in the engine, if they all had the same exact specifications. So I would not worry. But yes, someone else here did state your exact findings (three of one type on one side and a different type on the other side)
NCSCOTT
New member
Bubba,
Here is a link to a thread I start about the same exact thing. Happy Reading!!!
http://www.toyota-4runner.org/showthread.php?s=&threadid=11682&highlight=ngk+denso
Here is a link to a thread I start about the same exact thing. Happy Reading!!!
http://www.toyota-4runner.org/showthread.php?s=&threadid=11682&highlight=ngk+denso
jeober
New member
I work for an automotive supplier and I'm going to take a stab at why we see the two spark plug suppliers in the same engine.
NGK and Denso have a 50/50 supply award for the engine and this is the most efficient way to guarantee this in production. It would be difficult to use Denso's on the line for a while and then alternate in NGK's fairly.
The plugs are put in using automated machinery and one side is always loaded with NGKs and the other side with Denso.
NGK and Denso have a 50/50 supply award for the engine and this is the most efficient way to guarantee this in production. It would be difficult to use Denso's on the line for a while and then alternate in NGK's fairly.
The plugs are put in using automated machinery and one side is always loaded with NGKs and the other side with Denso.
Sparkplugs
I have a 99 SR5. I found NGK on the passenger's side and Denso on the driver's side the first time I changed the plugs. I thought the previous owner was lazy since the driver's side plugs are a little harder to get to.
The gap on the NGk's was still around .043, the gap on the Denso's was over .054. The Densos had 73K on them. I think the previous owner was lazy or was taken advantage of by his mechanic.
I just replaced the NGK plugs again after another 30K. The gap was still around .043.
I have a 99 SR5. I found NGK on the passenger's side and Denso on the driver's side the first time I changed the plugs. I thought the previous owner was lazy since the driver's side plugs are a little harder to get to.
The gap on the NGk's was still around .043, the gap on the Denso's was over .054. The Densos had 73K on them. I think the previous owner was lazy or was taken advantage of by his mechanic.
I just replaced the NGK plugs again after another 30K. The gap was still around .043.
