spark plug electrode broke off went into cylinder
spark plug electrode broke off went into cylinder. what damage did it do.
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Hi Linda, The only way to tell for sure the amount of damage and to keep more from happening is to remove the head and look. If there is metal floating around the cylinder it could be scoring the cylinder walls or damaging valves. Not getting it looked at could lead to big repair bills down the line. Are you certain a piece of the sparkplug broke off? Ralph
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Or buy a cheap boroscope off of Amazon that plugs into a cellphone and look inside. Removing the head co$ts many monie$!
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Chances are you have nothing to worry about. The electrode most likely went out the exhaust valve and is now stuck in the catalytic converter (something this small will not cause an issue) or it passed entirely out of the exhaust system.
If the car is running fine, not overheating, does not feel or sound like it is missing then I wouldn't worry about it.
I don't think the part is stuck between a piston and cylinder wall. The normal piston to cylinder wall clearance is from .003 to .008 of an inch (it can be less or more depending on engine, components, intended use etc). The piece that broke off would have to be very small and land perfectly for it to be wedged in this small gap.
If you want, you could have a mechanic do a compression check on each cylinder. This will show possible bent valves or other possible problems.
Some mechanics also have a diagnostic scope or camera that can be put into each cylinder via the spark plug hole. With this tool you can sometimes see physical damage inside the cylinder.
My opinion, if it's running fine, don't worry about it. I do wonder why it came off in the first. This is not common.
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Good answer + Ralph
like +
Thanks Rob! This happen to me it's 2/07/2020 did a compression test it was OK stuck a camera inside the spark plug hole and everything was fine so its probably in the muffler. This post is 10 year old and still helping people! Thank You again, mechanic told 2,000 to fix it.
A peace of the spark plug broke off and fell into the cylinder wall and I started it and now it's knocking
engine was rnning $@$*!&
no piwer
gutless
Rep: 13
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Still attempting to figure this one out? I think Bosch answered correctly…
Bosch indicates low KV will cause ground electrode damage, aka barely enough spark to fire the plug, additionally they indicate additives can be the cause.
Other manufacturers indicate loose plugs can be the cause due to vibration (NGK), also loose plugs tend to damage plug threads, as the thread is the point of electrical connection and loose plugs would experience intermittent grounding.
Historically its been contributed to tick over or run on from deposits on the top of the pistons, caused from low octane fuel …. but this is an old 1980s problem prior to fuel injection, where carburetors would feed continuous fuel to the engine.
Other proclamations are lean mixture and Rich mixture in the cylinders, however with todays vehicles this is doubtful unless one modified their engine, and fuel system.
Finally there are stories of this condition (missing ground electrode) occurring often with Subaru vehicles. The owners remove all of the plugs, throughly clean the threads and clean out the bores, replace the plugs and plug wires, and the problem goes away. Therefore its highly likely the Bosch answer is correct, as dirty plug threads would cause problems with electrode grounding. This can be exacerbated with the use of anti-seize compound on the spark plug threads, which is a mistake common among mechanics who ignore the fact later plugs have anti-seize nickel applied during manufacturing and therefore need no further anti-seize applied to the threads.
Hope this helps resolve the issue for folks with this predicament
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My 2007 ford expedition has been breaking off the electrode tips of my plugs. It has 114k miles. I have already replaced plugs and coils at 100k miles. Too rich fuel mixture? Thanks
88 chevy engine
marine
any deas?
Rep: 3,4 mil
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Hi,
that depends on what happened to the electrode. First scenario would be that it was blown out of the cylinder and is now somewhere in your exhaust pipe. Second scenario would be that the electrode is still somewhere in the cylinder, maybe between the piston and the cylinder, that might lead to scratches and that to severe damage of the engine. Third scenario would be that the electrode stuck between the valve and the valve seat, the piston went up and hit the valve, and now the valve is bent.
The scenarios are sorted from: sounds logic, maybe and ......naaah
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r those the only scenrios
As someone who has had the unfortunate experience of this happening, you definitely do not want to start the engine. For me, the electrode did not blow out of the exhaust instead it stayed in the piston area damaged the piston, valves and head. Luckily it was not so bad it could not be repaired (the cylinder block did not get scratched) but it definitely caused other problems. I repaired it myself but if you had to take this into a shop it would have been costly. See if someone can scope it and see if the electrode is in there, otherwise the engine head may need taken off to check.
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any ideas with a chevy mericruiser 88
I had a coil plug break the threads off in the engine. I got a easy out- reverse thread bolt. I dug out the porcelain and the electrode, and blew it all out with air nozzle. So I get a easy_out reverse thread bolt. Well now it's stuck in the broken thread hole , and the bottom of the broken threads is the little bent piece that the electrode sparks too. But now it's stuck in the hole, my coil fit perfectly over the dye . I put everything back together and started it. By the way it's a Durango 5.7 ltr 16 plugs , We'll 15 & one metal die. The engine runs excellent, and I'm changing the oil & filter tomorrow. Will this go bad for me?????? If your just guessing please don't answer, experience only please life of car if wrong. Thank you. I plan on trying to get it out, but I have worked on this for 3 days straight and have damaged quite a few tools. Even bought some and still no deal. !&&* the engine ate it too.. Sooo.....
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I have a 2014 Audi A4 I change the ignition coils and spark plugs and noticed one of my spark plugs cap broke and fell off and cylinder three and it is Reagan misfire and my engine light is on with the PCV light and I can’t seem to fix it while I’m losing power on my car does anybody know what I could do
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I recently changed my spark plugs coils and spark plugs and noticed that one of my spark plugs tip was broken and cylinder three and now I’m reading misfire and I have my PCV valve light on and my engine light and seems that I’m losing power when I try to takeoff does anybody know how I can fix the problem please
dude same s3 here just found one of my spark plugs broke n im really hoping it just blew out of the exhaust because if not sounds like this is going to be an expensive fix
I believe a ez out went straight to the cly 5.4 1998 ford I used a ratchet to turn the motor around by hand and it stopped I went the other way till it bottom again what can I do
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7 comentários
What liability of this is fords
por aaronscottartist
aaronscottartist none. Why?
por oldturkey03
.the electrode put a hole in the piston when it came out
por aaronscottartist
I was doing plugs today and when I took my first plug out. Half of the ceramic casing on the plug I pulled out was gone. When I started it when I got my first plug and wire done it was tapping ...I shut it off. I turned it back on too see if it was still doing it and it was..so I'm thinking when I took the plug out the half of the ceramic on the plug fell down into the hole right?????? And what would have to be done to fix it!?! Its a 2000 ford escort zx2 coupe!!! Comment please!!!!!!!
por Scottie
I accidently dropped pencil in spark plugs and hole while mesuring tdc how can I remove it?
por christao.g.4141971
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