A 2004 Chevrolet Trailblazer that has a 4.2 liter engine will have a spark plug gap of .044 inches. The best spark plugs for this vehicle are iridium spark plugs.
motorcraft plugs are always the best in a ford any cheep ones
I have had the best luck using NGK. Obtain proper plug number and gap from owners manual.
Answeri have ngk spark plugs in mine and it seems to work for me and i have an 88 rx-7...hope i helpedAnswerI have an 84 and I go to Mazda and get the second generation plugs.
You have to use platinum-tipped spark plugs ONLY.
the best spark plugs for all ford vehicles are the motorcraft type, which they come from ford.
The best spark plugs are the original equipment plugs that were installed by the manufacturer at the factory. Sometimes you may need to go to a dealer to get the exact plugs.
THERE ARE SIX COILS MOUNTED ON TOP OF THE ENGINE ON THE VALVE COVERS.IF YOU TAKE ONE OF THOSE COILS OFF YOU WILL BE ABLE TO SEE THE SPARK PLUG,THEY ARE UNDER THOSE COILS.THE BEST WAY TO REPLACE THOSE SPARK PLUGS DO IT ONE AT A TIME.
ngk 3741(pzfr5f). do NOT use pzfr5f-11. -11 means the gap is 1.1mm, WAY to big
No! Best way is to remove the driver's side, front tire all four plugs are easy to reach from there. Just don't mix the leading and trailing plugs up. The two different type plugs are clearly marked with either an "L" or "T" next to the spark plug well.
AC plugs
if you call autozone or checkers they can tell you over the phone which is best and if they have any instock and what is closest to you