broken spark plug
Joined: Aug 2001
Posts: 6,096
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From: So Cal where the OC/LA/SB counties meet
And while we're on the subject... good engineering practice is to screw the plugs in with your fingers... NOT an air tool. I'd say accidental cross threading occurs about as often as seizing.
i always tell my cousin to never use air tools to put the spark plug in the engine, and what does he go and do, he use an air ratchet to take the spark plugs out.......I gave him a smack and tell him to never use air tool removing or installing spark plugs LOL
What did you use to extract the spark plug? If it was a welder, I have to wonder where you placed the electrode. A lot of people don't understand that when welding on something that has moving parts, you don't place the electrode in a position that allows current to flow through something that moves. i.e. when welding a differential, don't just place the electrode on the case and weld the spider gears, it'll destroy the bearings. Same goes for the engine. Placing the electrode on front pulley (for instance) and welding on something else would destroy the eccentric shaft bearings, etc.
If you used a bolt extractor, then the likelihood of jamming something (porcelain, metal) inside the engine is pretty damn good. I've rescued numerous engines from certain doom by taking a little time to do things properly.
If you used a bolt extractor, then the likelihood of jamming something (porcelain, metal) inside the engine is pretty damn good. I've rescued numerous engines from certain doom by taking a little time to do things properly.
i always tell my cousin to never use air tools to put the spark plug in the engine, and what does he go and do, he use an air ratchet to take the spark plugs out.......I gave him a smack and tell him to never use air tool removing or installing spark plugs LOL
i also used to use it to install them..
AFTER installing the plugs a few threads by finger.
course i didn't crank down on them, just seated them and gave it a nudge by hand.
Joined: Mar 2001
Posts: 31,811
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From: https://www2.mazda.com/en/100th/
we used to have a tech who used his electric impact gun to put spark plugs in, which is ok, but the battery goes flat, and then it doesn't tighten the plugs! so they used to fly out (and wheels fall off)
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Last edited by mikey1992; Dec 18, 2011 at 08:18 PM.
yeah two of the apex seals got nicked by the bolt extractor but are still good. During disassembly the water jacket seals popped out and were stretched. Theres a kit on atkins for like 150.
wait.. here i was all feeling bad for being somewhat responsible for your fucked engine but then
...
how did the extractor "nick" two apex seals? what exactly did you do? i did this procedure with absolutely no problem..
...
how did the extractor "nick" two apex seals? what exactly did you do? i did this procedure with absolutely no problem..
Well i didn't know it broke. My brother and my friend pulled out the spark plug while i was at work then cranked it over. I'm not mad that any of this happened cuz it's all a learning experience. I just ordered the gasket kit off of atkins should be here in two days.
More importantly how the hell did this break off to begin with?
I had a bad lot of plugs once. Had two of them break off just as the crush washer was compressing. Luckily I used an easy out and got them out with no damage. I returned the rest of the plugs for new ones.
You can always use a q tip with grease to try to chase out most of the shavings too, but I wouldn't recommend this on a rotary because of the bathtub shaped combustion chamber.
I had a bad lot of plugs once. Had two of them break off just as the crush washer was compressing. Luckily I used an easy out and got them out with no damage. I returned the rest of the plugs for new ones.
You can always use a q tip with grease to try to chase out most of the shavings too, but I wouldn't recommend this on a rotary because of the bathtub shaped combustion chamber.
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