Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: ngrainqey on 28 December 2008, 19:05:32

Title: something in cylinder bores...
Post by: ngrainqey on 28 December 2008, 19:05:32
okay, iv been having problems with my 2.5 recently... think i know why it's been missing on cylinders 3 and 5....cranked the engine over with a socket and it turns then gets stuck and to add to that i'v got sort of electrode splatters on the cylinder heads and some squished spark plugs lol but it looks like eg a female torx socket has fallen into the bores (i dont know how it'll have happened if it has lol)

anyway so i need to take the head off and retrieve whatevers in there but does anybody think maybe the pushrods have gone or big ends?

thanks
Title: Re: something in cylinder bores...
Post by: Matchless on 28 December 2008, 19:10:55
If it is something hardened like a socket then there could be severe damage to both piston and head. You wont know until you get the head off.

Post some pics once its in bits.
Title: Re: something in cylinder bores...
Post by: ngrainqey on 28 December 2008, 19:14:13
ok if i can be arsed to take the head off then i'll get pics,
i'm on about having a rumage around with a magnet on a long stick thing first (see if anything comes out)
i'd have thought that something like a socket would just bounce around and stay within the combustion chamber area rather than actually hit anything

thanks for the reply anyway!
Title: Re: something in cylinder bores...
Post by: Marks DTM Calib on 28 December 2008, 19:14:54
Pushrods will be fine....as it does not have any!
Title: Re: something in cylinder bores...
Post by: ngrainqey on 28 December 2008, 19:15:40
sorry i mean conrods is it? from the crank to the cylinder
Title: Re: something in cylinder bores...
Post by: Marks DTM Calib on 28 December 2008, 19:15:55
On a more serious note.....do all the valve guides look to be intact (inlets and can be viewed with the heads on)
Title: Re: something in cylinder bores...
Post by: Elite Pete on 28 December 2008, 19:23:47
Quote
sorry i mean conrods is it? from the crank to the cylinder
Crank to pistons :)
Title: Re: something in cylinder bores...
Post by: ngrainqey on 28 December 2008, 19:25:17
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On a more serious note.....do all the valve guides look to be intact (inlets and can be viewed with the heads on)

yeah mark all the inlet valves look fine looking between the two banks down the intake ports
Title: Re: something in cylinder bores...
Post by: ngrainqey on 28 December 2008, 19:27:03
oh well... if in doubt i can take the heads off and rag the bottom end out and swap for the spare i have ;)

maybe a good time to swap to an ar35 too lol!
Title: Re: something in cylinder bores...
Post by: dbug on 28 December 2008, 22:31:47
What tw*t managed to drop a female torx socket into an engine & then run it!!!
Title: Re: something in cylinder bores...
Post by: ngrainqey on 29 December 2008, 13:20:30
lol well as far as i know it wasnt me
Title: Re: something in cylinder bores...
Post by: Marks DTM Calib on 29 December 2008, 13:39:00
Quote
Quote
On a more serious note.....do all the valve guides look to be intact (inlets and can be viewed with the heads on)

yeah mark all the inlet valves look fine looking between the two banks down the intake ports

Its not the valves....its the guide that you can just see poking out the heads.

I have had experience where some have cut corners on head re-builds following belt failures where new valves were fitted but, the guides were cracked...the result was an ingested lump of valve guide!

e.g.:

(http://i23.photobucket.com/albums/b394/Marks_DTM_Calib/IMG_0646.jpg)
Title: Re: something in cylinder bores...
Post by: Ian_D on 29 December 2008, 14:51:25
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Quote
sorry i mean conrods is it? from the crank to the cylinder
Crank to pistons :)
oh dear alex... Are you 'sure' you know what your doing?  :-X ;) :y
Title: Re: something in cylinder bores...
Post by: ngrainqey on 29 December 2008, 14:52:55
lol piss off ian :P
i have two good heads if the valve guides are fubar'd lol
Title: Re: something in cylinder bores...
Post by: Ian_D on 29 December 2008, 23:11:32
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lol piss off ian :P
i have two good heads if the valve guides are fubar'd lol
Hehehe!!

Still havent answered the question!  ;D

Im sure you will fix it!  :y

Which engine are you turboing btw, is it in a car? Need an update with more pics!!
Title: Re: something in cylinder bores...
Post by: Christian on 29 December 2008, 23:15:14
Pretty sure you would get a magnet down the plug hole and pull it out with the Piston head in the right place, saying thatits not gunna help matters by the sounds of things if its already not running properly  :-/
Title: Re: something in cylinder bores...
Post by: ngrainqey on 30 December 2008, 13:27:55
i think the reason it's not been running properly is because it's not been firing on two cylinders since the plugs got attacked with something inside the bore lol!
Title: Re: something in cylinder bores...
Post by: ffcgary1 on 30 December 2008, 15:50:02
This rough running issue is very similar to the problem i had with a v6 veccy that i worked on, the spark plug failed and the ceramic core dropped into the cylinder causeing it to wedge its self between the piston and cylinder bore, causing damage to ther bore and breaking a piece off the piston crown, thus a BAD misfire and no power. Lets hope that it is a valve issue rather than a bore problem. ::)