Spark Plugs update...
#21
RE: Spark Plugs update...
Its really simple Stone... I'll post up a few pics tomarrow... but yeah basically you just use a socket wrench to remove the bolt holding the ignition coil on and then use a socket wrench with a spark plug socket to remove the plugs and simply replace them all...
hm... I haven't seen that spark plug pic with the gapper... I'm actually very confused on where I got .35 from now... I could have sworn it said .35... but I just checked and your right it does say .42...
... Oh Well... [sm=oopssign.gif]
hm... I haven't seen that spark plug pic with the gapper... I'm actually very confused on where I got .35 from now... I could have sworn it said .35... but I just checked and your right it does say .42...
... Oh Well... [sm=oopssign.gif]
#22
RE: Spark Plugs update...
I noticed in th manual extract above it shows NGK plugs. Is the gap different for each plug/plug manufacturer or should all plugs from all manufactures use the same gap? I used to use the NGK "hot U" plugs in my old KZ1000 and could really feel a difference from other plugs.
#23
#24
#26
RE: Spark Plugs update...
ORIGINAL: luvmydak
Again, the oem plug (NGK) calls for a gap of .040. The recommended gap for the colder Autolite 3923 is .035. This is what I set mine at andmy truck('05 3.7)runs great, much smoother idle.
Again, the oem plug (NGK) calls for a gap of .040. The recommended gap for the colder Autolite 3923 is .035. This is what I set mine at andmy truck('05 3.7)runs great, much smoother idle.
Another interesting thing is that according to autolite, the recommended plugs for the 4.7 are the 3924's so going to the 3923's gets a little cooler heat range. The interesting part is that the recommended plugs for the 4.7 HO are 3922's which are cooler than the 23's. I'm wondering if the 22's might work even better on a 4.7 with aftermarket cams since the only difference for the HO is a different camshaft right? (Here's hoping superdak chimes in on this, I'd love to hear your thoughts about it)
#27
#28
RE: Spark Plugs update...
The perfect heat range depends on your specific driving style as well as quality of gasoline.
Hotter plugs will resist fouling because deposits tent to burn off better.
A higher voltage spark allows wider gap. Modern electronic ingition is much more tolerant of wider gaps. .035 or .040 will probablt not make a noticable difference. In theory, a wider gap will allow better fuel ignition but it would be surprising if anyone could detect a difference of .005" in either performance of mileage.
I think somebody on this thread should do the research...
Hotter plugs will resist fouling because deposits tent to burn off better.
A higher voltage spark allows wider gap. Modern electronic ingition is much more tolerant of wider gaps. .035 or .040 will probablt not make a noticable difference. In theory, a wider gap will allow better fuel ignition but it would be surprising if anyone could detect a difference of .005" in either performance of mileage.
I think somebody on this thread should do the research...