I have a 2005 blazer with ac delco plugs
the gap is at .130 right know, does anybody no the right gap

 

Should say right on the emissions sticker on the core support. I believe it is supposed to be 0.042".

 

I believe mine for AC/Delco is .060", but definitely check the emissions label.

 

my 98 (W) is gaped at .060 ac/delco

 

Any parts store should have this info.

 

Yah my 97 is .60 per the emission sticker the manual says .45 though,so find that emissions sticker they forget to update the manuals.

 

my clymers manual says .045

 

.045 is the gap I believe

 

0.130"....??..are you sure of this measurement?
Is this for a 2005 Blazer, 4.3L V6 or a Trailblazer, 4.2L inline 6?

 

I know what OEM likes to say spark plug gap should be .045 to .060. Just recently i had a HORRIBLE time trying to start the poor vehicle with starting fluid after every time of 17minutes of rest. I really got SICK of doing this for 32days. SO:::::::::>what i did is my old trick from 1978 was to change the spark plug gap FROM .045 (or .060) to the more sencable of .035 and WHA LA it has now starts up even after sitting for 3 or more days with no assitance other than the starter. I did however added the ECO OB2 (for $2.75) little green computer to the system and is do VERY GOOD
Forgot to mention my 1995 chevrolet blazer was a field/barn find found and abondoned with 44,767miles and has a slew of other problems cause a few years of negligent service