DAMAGE Caused By A Broken Spark PLug Ground Electrode
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- Опубліковано 15 чер 2016
- Ever wonder what happens when a spark plug electrode breaks inside your engine? Watch this video to see for yourself!
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Thanks a lot Donnyboy73... Keep up the good work👍
Great video and tips Don!
Great information. I had no idea. Thanks Doctor.
great video as always really helpful thanks donyboy73
Another great video.thank you
always great , thanks ...
Amazing the tool ran with a damaged spark-plug. cool vid thanks for sharing.
Wow ... never seen that happen before ... good to know !
you should do a toolbox/shop tour
I've never seen that before, he must of been reusing that plug for eons or something. I tend to clean and reuse my plugs (not for eons but a couple seasons or so), I will be stopping that practice immediately, not worth all that for a 3 buck plug.
Thanks for the vid neighbour, it opened my eyes.
Quite unusual to see this. Good to know!
good video
wow Don, that is a first for me. But. a loose plug and vibration looks like the cause of the damage. Good video as always.
Wow, that's crazy
Just WOW!
Never saw that before , wonder how it ran long enough to get that beat up .
I'm amazed it still ran with the plug broken like that
Honestly, I'd never heard of this happening! It's the little things that cause the biggest nightmares. Wow!
wow that's something to think about
Yep, that's an oddity. I have also seen that kind of damage in those series saws, caused by the wrist pin bearing cage breaking a small section off, then being ingested into the combustion chamber. It looks exactly like that.
Can't say I have ever seen that problem!
Would you advise repairing this or is it not worth the cost???
Thank you, Does your repair shop ever work on motorcycles, Excellent video as always
no I don't but if I wanted to I could
does the saw still kinda run?
nice video don, and you got a small typo in the title lol
this happened to me last week on my 4.5 evinrude outboard, it died on me on the river gonna try replacing the plug today, do you think it will start again by replacing the plug
on old motorcycle I have I found same kind of damage, after striping it down found out that both left and right wristpin clips where both missing and little bits loged in piston and cylinder
I know I am overdoing it and overthinking it but, if I get the chance and am able I like to start each season with new filters and plugs on everything and fresh gas of course. I have had a roto tiller with fresh gas on empty tank and new plug put in it before starting one season took one pull and fired right up after sitting all winter, of course it usually never took many more pulls than that.
I had the same exact thing happen to me on my ms 661 c
Wow, that sure beat the crap out of that piston!
WOW!
In my opinion this is not a weld failure directly. The electrode broke of just outside the spot weld. Remember that if the weld failed it would not leave this perfectly rectangular fracture zone but a wider more uneven shaped one. Fracture in a piece of solid steel is often related to undesired changes in the steels microstructure. When steel is heated to a cherry red color and cooled rapid in water, oil or with compressed air the molecule structure in the steel will lock together in a that state that makes it very hard and brittle. If the spark plug was brand new and failed without no reason this could very well be traced back to the manufacturer. Adjusting the spark gap on a plug with brittle ground electrode will push it even closer to the inevitable failure.
This could also be explained by incorrect treatment of the spark plug after it was bought. Work hardening because of repeatedly bending the electrode back and forth is my number one suspect.
where's the link??? I've never seen that before. strange.
Often has this happen over a period of time? kind of rare yes or no?
Great video. tu
Hey Doc what about those non electrode spark plugs , what up with them ?
HHHm , good idea to plugs each year since a plug isn't that costly!
So honing in the situation would not of been a good choice. Rather than just replacing. Or was the grooms entirely too deep?
I never would have thought of that part of a spark plug breaking off. Maybe welding them on isn't the best way after all.
If that was the correct spark plug (reach), then the only way i could see that happening is if the cylinder barrel is shimmed too low, or the Con Rod has stretched, or the rod bearings shot. Or the wrong piston, I suppose. Any of these things in this engine? If none of the above, I suppose a bad assembly at the plug manufacturer. What brand?
I want to see a spindle shaft repair on a mower deck 2-3 blade...please? Include bearing replacement vs rebuilt assembly..showing how mower companies cheap on no zerk fittings...yes.
Had the ceramic part break off in a car engine.
hey donyboy first off thanks for all the help you have gave me over the last few years.
I have a TS400 cut off saw that just wont start form cold. once its warmed up its sound or if you put fuel down the pot then start it it starts. its had new-
piston/pot/big end bearings and seals and compression is 125psi any ideas??
Did you replace the spark plug?
Hey, listen to this coincidence, I got a used craftsman lawnmower with a Tecumseh engine that wasn't running. I got it running by cleaning the carburetor. Then there was a gas leak at the carburetor bowl. I replaced the bowl and gasket, gas leak fixed, then a oil leak sprouted, it turned out, there was no gasket at the dipstick tube. Put a gasket on, oil leak fixed. But then another gas leak sprouted, this time, it was where the primer bulb was, haven't fixed it yet, but i'll try. By the way, I'm 13 and I got a lawnmower running.
Hi: I cannot imagine how the broken-off electrode could damage the underside of the piston. How would it get past the rings?
This is the top of the piston. Note, the cylinder head is part of the cylinder bore on this engine
If the cylinder was too scored couldn't you hone it? Jack
my 9 year old b&s Murray 4.5hp still has the original spark plug, now after i just seen this video i think i should change the spark plug even though my mower is falling apart lol!!!!
Is it possible to replace a scratched bore or are you better off getting a new saw?
It's possible. But sometimes, you're better off to get a whole new unit.
That's a first for me. Never seen that before.
it can happen ... like bad gas mix in a carb ..
This is exactly what happened to my car two years ago. I still feel the 2100€ bill from the repairs. Does anyone knows how could such a thing have happened ? I asked my mechanic. He basicly rebuilt the top of the engine (replaced the cylinder head), but didn't know how such a thing could have happened and I find very little information about it on the internet. Some say the cylinder would have ran lean.
When I first replaced the spark plugs, the one that was on the cylinder where the problem occured was black. The other ones were like new. The car was not always running fine. Then I used some injector cleaner additive on my gas and it ran better after that. When I replaced the spark plug again 2 weeks ago, all of them looked fine after about 12 000 miles. Any tips ? Thanks !
THIS just happened inn a car I JUST purchased while checking the spark plugs yesterday for a fresh maintenance start. Plug in Cylinder 4 was LOOSE when taking coil off and there was lots of black soot/carbon build up on intake head walls. I unscrew plug fully & there’s NOT “L” TIP, just center nipple! I made a “straw funnel” & attached it to my vaccum and put it in the cylinder to suck up any debris. I’m not sure if plug tip is in there or not, even when test driving the car for 40, mins and driving it hard…... The Engine seems to run fine. There are NO CEL’s. I ordered a endoscope off Amazon so I can see what’s in the cylinder for sure. What’s the chances the spark plug tip went out the exhaust valve and into the car converter?! 😅 wishful thinking, I know….. 😢😢
Had this happen on a 07 Chevy equinox. Half of the top was gone. The spark plug was lose I could remove it with my hand.
This happened to my car
How old is this Ngk spark plug ? Or is it material fatigue ? Thats really odd.
it's quite a few years old and the plug was loose in engine
I think that I am seacond one who got this problem, right when i tuned my bike this shit happend, and for me only tip broke off, this unbelievable... i wish i would see this video faster😪... this ruined only piston for mee and cylinder is safe.
ngk or chanpion or boch ?
NGK
just found this on my ford focus st.....not happy...do you think this could pass thru exhaust on a car?
it might have, if it runs ok then don't worry about it
ordered me a borascope that plugs into my cell phone...gonna look around in there and try and blow it out before i put a new plug in....kinda shitty how the ground breaks off in there.
Will a spark plug still spark even though the electrode is broken.
It could. The sparks will try to find the nearest piece of metal. Like the piston.
How is that even possible for a plug to fire like that?
The spark could have jumped to the piston.
Ah right. Could those high voltage sparks also eat away at the piston? Or did the repeated bouncing of that piece of metal created the damage?
It's probably the repeated bouncing of the ground electrode because if the sparks damaged the piston, it would probably affect the one area the sparks were the sparks were jumping to because the sparks will likely jump to the nearest piece of metal around.
ouch that is a junk engine now and your newest videos is private, still working on it?
yes lol, it was scheduled for friday
Husky quality...
Donny, I received a notification under your logo by email that warned me the content was private and required me to log in to view. This indicated to me the content was suspicious. This is also a marked departure from what I have received from your web site in the past. I did not open the content and did delete it. Are you doing something different that I don't know about with respect to your viewers, or is this some sort of malware taking advantage of your logo?
could be the new video that went public this morning but was only supposed to be for Friday so I made it private until friday
Wow Just one ring on a Husky,, Cheap Crap ,,,,,