Mystery object in cylinder
Discussion
I have found a strange bit of debris in cylinder 3 (images attached). Is it metal? Can't see anything in the oil. Any thoughts?
Background:
The car:
Vauxhall Corsa C
225,000 miles on the clock
Original engine and clutch
In 2008 after I passed my test I was given the car and used it until 2012 when I replaced it with a Corsa D, as at the time I started a job which was a 100 mile round trip, and at the time I did not want to push my luck with the mileage, so since 2012 the car has been in a garage.
I have recently moved the car over my house from the garage and am preparing to get it back on the road again. I have every confidence that I could charge the battery and it would fire up right now, however, as it has been parked up for 8 years I will be giving it a good service first.
Anyway I people seem very surprised everything still works properly on it, and following on from the popularity of the Youtube channel Car Throttle's "high mileage hero" I didn't want to just scrap it. It has been more reliable still today than some of the newer cars I have driven. It has never ever let me down.
This is the first time I have ever done any work on a car (something I have been wanting to get into for a while) and this seemed the perfect opportunity.
Background:
The car:
Vauxhall Corsa C
225,000 miles on the clock
Original engine and clutch
In 2008 after I passed my test I was given the car and used it until 2012 when I replaced it with a Corsa D, as at the time I started a job which was a 100 mile round trip, and at the time I did not want to push my luck with the mileage, so since 2012 the car has been in a garage.
I have recently moved the car over my house from the garage and am preparing to get it back on the road again. I have every confidence that I could charge the battery and it would fire up right now, however, as it has been parked up for 8 years I will be giving it a good service first.
Anyway I people seem very surprised everything still works properly on it, and following on from the popularity of the Youtube channel Car Throttle's "high mileage hero" I didn't want to just scrap it. It has been more reliable still today than some of the newer cars I have driven. It has never ever let me down.
This is the first time I have ever done any work on a car (something I have been wanting to get into for a while) and this seemed the perfect opportunity.
Hard to make out, but there shouldn't be anything in there so whatever it is needs to come out. Any chance of poking it with some gum on the end of a wide to pick it up? It looks big enough that you might have a chance at that, especially if you can get a wire in there alongside what I guess is an endoscope used to take that picture.
If it's a piece of piston ring the you're compression reading may be down on that cylinder. Is the earth electrode missing from the spark plug? That's the more likely possibility. It has the wrong section to be a piece of a ring.
Lastly can you 'get it' with a magnet on a stick or piece of string? Don't lose the magnet in there, obviously.
Lastly can you 'get it' with a magnet on a stick or piece of string? Don't lose the magnet in there, obviously.
Stretch Bluetac over a long wooden Skewer so its big/long enough to hold with your fingers.
Leave a knob of it at the end. Poke it in and Hey Presto.
Thing is it looks like a piece of Ring, so it'll come out when you pull the Piston out of the Block to replace it !
As said you should have low compression on that Cylinder.
Good Luck !
Leave a knob of it at the end. Poke it in and Hey Presto.
Thing is it looks like a piece of Ring, so it'll come out when you pull the Piston out of the Block to replace it !
As said you should have low compression on that Cylinder.
Good Luck !
te photo but it looks like detonation damage. OldGermanHeaps said:
thats what detonation damage looks like on a 2 stroke, like little dimples hammered indo the crown displacing the metal around the edge, usually around the circumfrence.
Imagine a 2 Stroke Corsa !That would be nippy on the Powerband !
Easy taking the Head off with no cams though.
This piece of Metal even has a reflection on the Cylinder Wall.
Edited by mickyh7 on Friday 27th March 09:36
I don't think you will be getting it out with a magnet or bluetac. That looks embedded in the piston.
Have you done any compression tests or did the engine have any poor running symptoms? Were you working on the engine and something dropped in and you haven't actually run the engine since? In the latter scenario you will be OK getting it out but if it has happened with the engine running then it could have damaged valves on the way in and maybe cylinder head and piston while running.
Have you done any compression tests or did the engine have any poor running symptoms? Were you working on the engine and something dropped in and you haven't actually run the engine since? In the latter scenario you will be OK getting it out but if it has happened with the engine running then it could have damaged valves on the way in and maybe cylinder head and piston while running.
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