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Smashed spark plugs; 1999 Chevy Metro
Topic Started: Jan 19 2012, 12:03 AM (2,887 Views)
ChevyMetro
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So I was driving down the road one day and the car was kinda sputtering at sometimes but had to make it home, so I made it home and then the next day it didnt start. That was like a month ago and I now looked into it more. So its the 1.0 3 cyln with 130,000 and I pulled the plugs and the 2 outside plugs were smashed by the pistions. The middle one was fine, What could this be? Broken timming belt? Crank walk? Or? I love this car so any help would be great!! :D P.s What is the correct spark plugs for this car? Ill double check I that i have the right plugs
Edited by ChevyMetro, Jan 19 2012, 12:22 AM.
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HelterSkelter
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#1 Pizza Driver

i'm pretty sure any plug that has the thread that fits your geo is the right one. if your plugs are all smashed up you probably had debris inside the combustion chamber that the piston was smashing up against the plug.
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DesmondGhostRider
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Yea I'd take the plugs out and try to start it. It will shoot all the crap out of the combustion chamber...or at least some.
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Coche Blanco
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Troll Certified

Did it happen all of the sudden?
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Deleted User
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HelterSkelter
Jan 19 2012, 12:34 AM
i'm pretty sure any plug that has the thread that fits your geo is the right one. if your plugs are all smashed up you probably had debris inside the combustion chamber that the piston was smashing up against the plug.
:gp

If the proper spark plugs are installed, this is the understatement of the century. Shine a flashlight down in the spark plug holes and rotate the crankshaft so you can see the top of the piston. You might have quite a bit of carbon on top of your pistons.

A 17mm socket on the crankshaft bolt will rotate the crankshaft.

Let us know what you see.

:popcorn
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Woodie
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Something is horribly wrong and that engine needs to come apart to see what was wrong. There's no putting spark plugs in and hoping for the best, you're way past that point.
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Tofuball
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Strange Mechanic

The shape of the combustion chamber and the way the spark plugs are positioned make it so that even if the piston somehow detached from the rod and flew up it would hit the head and never reach the spark plug.

Pics of plugs please?
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Coche Blanco
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Tofuball
Jan 19 2012, 07:23 AM
The shape of the combustion chamber and the way the spark plugs are positioned make it so that even if the piston somehow detached from the rod and flew up it would hit the head and never reach the spark plug.

Pics of plugs please?
My thoughts exactly.
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ChevyMetro
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I will get some later today when I am done with school. While doing this last night I had my spark plugs wires sitting on top of the my NEW BATTERY... Boom she went..... I never new that batterys blow up like that... my head still hurts still :banghead
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Georgboy
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Ummmmmm. Yeah... Careful dude!
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BillHoo
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If there's some ferro-metallic debris inside, maybe you can use one of those telescopic magnets to fish it out via the spark plug hole. Don't know if it would be able to pull up a loose piston to see if it's disconnected.

If there is excessive carbon, maybe you can get a short length of cable and cut off a few inches of insulation and attach one end to a drill and route it somewhat clean and use a vaccuum hose to suck the carbon fragments out - just looking for ways to avoid dissassembly of the engine.

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billy508
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billy508

Maybe you should name your Geo "Da Bomb" :banana :banana :banana
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ChevyMetro
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So what are the correct plugs?
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Eric J
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Formerly CEJ93

Autozone lists :
NGK Iridium3903
Autolite XP 63
NGK Platinum : 7084
Bosch platinum : 4019

I believe the NGKs are recommended most of the time from what I recall reading around here....I could be wrong.
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Georgboy
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I run Bosch platinum +4 ...
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