Best Spark PLugs

[rollakid]

eh now after engine warm up it jerks ler.. when engine cold it is smooth.. how how? change to colder plugs?

 

[miaovin]

hahahahahaha!!! see you guys say what 1st >>>>>!!! heheheh!!!!

 

[Maxx]

colder plugs more suitable to force induction engine, high compression engine.
as these engine create more heat.
usually heat range 6-8 dpends on engine.

using colder plug to normal engine will foul the plugs earlier and some power will be lost.

hotter plug (within range. 5-6 heat) more suitable for normal engine.

 

[Shamanraj]

so now what to use?? I am confused ready....isnt there any plugs that can be used for low reving and high reving....hmmm....

 

[rollakid]

i think i'd change to heat range 7 when these ones goes bad...

 

[huakenny]

so now what to use?? I am confused ready....isnt there any plugs that can be used for low reving and high reving....hmmm....

depends on car...high revving need colder plug....

 

[Maxx]

usually normal engine manufacture recommend 5 heat range (this is ngk's plug, other brand might have different no. of heat range that equilavent to ngk's. best to check service manual).

if high revving better get a bit colder like 6. this to prevent the plug from "glowing" n running engine after switch off.

 

[miaovin]

hohoho !!!