Question about 1995 Geo Prizm

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Wow no engine stated, 1.6L or the 1.8L , they are not the same.
working with no shop manual, why>?
its toy corolla in snake (gm) skins
they made 40million corolla, a record,
means ,no lack of info on it ever.
the spark plugs in screw, like all do, right tighty lefty loosy.
do not exceed 15ft/lbs, tightening torque , on alum heads.
spark plugs have many sizes,
if you pretend to buy one from NGK
go to NGK dot com, look, yours up, see that p/n
then click that number (its data sheet on this shows spark hex sizes. in clear text... 13/16" or 5/8's or what ever.
a real shop has all sizes, so, its gander pick.

the cat is just bolts and nuts.
what is there to ask here.????
sure rust.
many will be real hard to remove with rust
there is no limits on rust and its effects.
what will be, will be.
in a real shop they have tools to handle all states here.
1-cut off the bolt and replace them.,
2-or use lots of Penetrating oil and muscle.
way 3 is , use a torch and heat them real hot, the metal explands.
the rust bond breaks and bam its loose. (turned)

why not read a book first???? or youtube all day and pretend,
like "autorepairs for dummies".
amazon has it.
buy it and read all those warnings first.

ill not do the NGK trick for you.
i pick 1.6L
the oem plugs
the click tab , part info
bingo 5/8": hex. is the spark plug deep socket size.
is that hard>
works on all cars.

it must be gaped to YOUR ENGINES, spec.
unstated engine.

Posted on Dec 29, 2016

  • Anonymous Dec 30, 2016

    what is required is tools and skills
    ask your muffler guy how to change
    it, he will through back his head and go
    well let me try, rust happens, a duh factor in all exhaust work,
    If you do it, you learn what he know.
    rust happens, and can be a small horror.
    YMMV your muffler may vary.... LOL

    the sparks are turn counter clockwise. 5/8" spark plug deep wall socket.
    they come out.
    we blow the pocket out first with shop air
    so sand dont fall into the engine.
    but it will be there. sand,grit.
    they come out, we gap the new ones,
    we dont guess, the gap matches 2 things.
    the engine compression ratio and the power level of the spark system. yours is weak.
    its not classed high energy yet,
    on usa cars the hood sticker clearly stated
    the gap, read it or read the service manual.

  • Anonymous Jan 23, 2017

    do not mix wires up
    do not strip the head out. (14mm head holes that the sparks fit) do not or cry for week.



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