MoNkEy MaGiC
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Registered: 12th Apr 03
Location: West - London Drives: Corsa GSi
User status: Offline
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i was just checking if the spark plugs were ok in my car, when i put them back in and started up, the car was sort of juddering and wen i hit the accelerater it seemed to judder and slowly rev up,took for a spin and their wasnt as much power as usual!!!
checked spark plug n one of them had a crack in the centre, the bit thats not metal!!! is this the problem???
also topped the engine up with oil i used a 10-40w gtx semi-synthetic magnatec, But the oil in their already is a 15-40 gtx non synthetic!! will this cause any problem???
please help guys 
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Cybermonkey
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Registered: 22nd Sep 02
Location: Sydney, Australia
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you should never mix different oil types for a start!! Magnatec is utter tosh anyway. standard vauxhall oil is just fine.did you tighten the plugs up to the correct amount?
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MoNkEy MaGiC
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Registered: 12th Apr 03
Location: West - London Drives: Corsa GSi
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oh shite, well will the mixed oil cause any problem, and should i drain it and make it jus one type of oil then??
i tightened them but not a lot at all, coz dey were well hard to take of in first place!!! thats how i think the crack happend, in fact its two little cracks not very easliy noticable tho but i spotted it!!
what u think could be wrong??
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stuyw
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Registered: 15th May 02
Location: North West Drives: Rev3 MR2 Turbo
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take the plugs back to where u got them from and ask them to change them as this could be ur problem m8
[Edited on 17-08-2003 by stuyw]
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MoNkEy MaGiC
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Registered: 12th Apr 03
Location: West - London Drives: Corsa GSi
User status: Offline
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nah bruv ive had them for 2 months and have been fine,all i did was just check them to see if they were ok and when i put them back in and started up is when the car started to sort of judder/hesitate and so i took them of again and noticed 2 small cracks on one of the plugs!!
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miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
User status: Offline
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Change the cracked plug for sure. If that white stuff goes into your engine it aint going to be good.
Could be the problem, check all the leads etc.
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MoNkEy MaGiC
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Registered: 12th Apr 03
Location: West - London Drives: Corsa GSi
User status: Offline
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cheers miles
its not fully cracked or peeling.....yet, but could get worse init.
yeah i checked the leads and stuff and seemed fine.
i really hope its just the spark plug thats causing this problem coz i can sort it out myself otherwise will have to take to a garage!!!!
cheers guys 
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Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Online
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Change the plugs, drain and change the oil.
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MoNkEy MaGiC
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Registered: 12th Apr 03
Location: West - London Drives: Corsa GSi
User status: Offline
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isit really worth changing the oil??? coz my car is drinking a lot of oil, give it 2 weeks and it will probly be down to half way!! i think the valve stem seals are gone coz oil is getting into cylinders 2 and 4???
shall i still change it?? or shall i take to a garage first to see what they say???
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Adam-D
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Registered: 11th May 02
Location: Cheshire
User status: Offline
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id say change the oil and filter use vaux oil or a good aftermarket make
change plugs and tighten up to correct torque
and ive just read that last bit
get a new engine! naa mate take the poorly car to garage an get it fully fixed and some tlc
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Bart
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Registered: 19th Aug 02
Location: Midsomer Norton, Bristol Avon
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if i was you, i'd just buy new oil and filter, and new spark plugs, your only looking at £30 for a piece of mind.
Most oils these days are multigrade so they should mix ok, but i still wouldnt try it myself.
Adam
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Fad
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Registered: 1st Feb 01
Location: Dartford Kent Drives: 330cd
User status: Offline
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quote:
Originally posted by Cybermonkey24
you should never mix different oil types for a start!! Magnatec is utter tosh anyway. standard vauxhall oil is just fine.did you tighten the plugs up to the correct amount?
what makes u say magnetec is utter shite? what is ur basis for this bold statement cos i find its really good and quietend down my engine.
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MoNkEy MaGiC
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Registered: 12th Apr 03
Location: West - London Drives: Corsa GSi
User status: Offline
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yeah i thought gtx magnatec was meant to be quite good
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Adam-D
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Registered: 11th May 02
Location: Cheshire
User status: Offline
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ive got semi sinthetic but ive got a 8v engine
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oztek corsa
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Registered: 31st Jan 03
Location: luton
User status: Offline
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I would change the oil and filter with standard vauxhall stuff,change the spark plug and put new valve stem oil seals in,none of them are really a big job.new plug £3,oil £15, filter £4, top end gasket kit £20.£42 in all and should run sweet as a nut!
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Cybermonkey
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Registered: 22nd Sep 02
Location: Sydney, Australia
User status: Offline
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quote:
Originally posted by fadscorsa
quote:
Originally posted by Cybermonkey24
you should never mix different oil types for a start!! Magnatec is utter tosh anyway. standard vauxhall oil is just fine.did you tighten the plugs up to the correct amount?
what makes u say magnetec is utter shite? what is ur basis for this bold statement cos i find its really good and quietend down my engine.
I used 15w-40 magnatec about 6 months back, car ran like a bag of nails, so i just put standard GTX in and it was much happier.
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ReeF
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Registered: 19th Jun 02
Location: Castleford West Yorkshire
User status: Offline
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mine seems to do that.... when it gets to about 60mph it starts juddering n revs up. i havent checked my spark plugs lol best have a look
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MoNkEy MaGiC
Member
Registered: 12th Apr 03
Location: West - London Drives: Corsa GSi
User status: Offline
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finally the car seems fine now, ive changed the oil, oil filter and spark plugs and its running sweet again, but i have to get the valve stem seals checked also the head gaskets look like they are leaking a bit too!
thanks for the avice guys
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