luke gsi16v
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Registered: 3rd Jan 07
Location: Staffordshire
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my car started knockin the other day from top end an lost all power, took the head off an found nothin wrong wit the valves an that, but it blew a piece out the head gasket between the 2 pistons like burnt it away. i replaced the head wit a new one today an now it want fire up, also did compresson test an was fine?
cud it be the crank sensor that cud make it fire wrong an knock?????????????
[Edited on 07-07-2007 by luke gsi16v]
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Dave A
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Registered: 10th Dec 03
Location: County Durham
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usually the fire ring between 2 cylinders goes between 3 and 4 on these engines. can happen over time with normal wear and tear etc... can be a sign of running lean as well.
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luke gsi16v
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Registered: 3rd Jan 07
Location: Staffordshire
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yh thats were it was, its usin more fuel, wat cud that be then to solve it
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Dave A
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Registered: 10th Dec 03
Location: County Durham
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get it tested on a RR to find where and why its running rich
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craig_s
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Registered: 5th Mar 06
Location: Birmingham Drives: mk4 astra gsi
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running rich could be a couple of things mine was doing this.partly because the lamba sensor had gone and the nock sensor was unplugged.is your eml light on?
[Edited on 07-07-2007 by sri power]
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luke gsi16v
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Registered: 3rd Jan 07
Location: Staffordshire
User status: Offline
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cums on now an again were is the knock sensor
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craig_s
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Registered: 5th Mar 06
Location: Birmingham Drives: mk4 astra gsi
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on teh back of the engine under the inlet manifold.its easier to get at from underneath.have you done a fault code test on it?
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luke gsi16v
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Registered: 3rd Jan 07
Location: Staffordshire
User status: Offline
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not yet no
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luke gsi16v
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Registered: 3rd Jan 07
Location: Staffordshire
User status: Offline
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so u had a knockin noise to??
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craig_s
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Registered: 5th Mar 06
Location: Birmingham Drives: mk4 astra gsi
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nah no nockin noise.mine just ran like crap over fueling and smoking.is it turning over?
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luke gsi16v
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Registered: 3rd Jan 07
Location: Staffordshire
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its turnin over yh but not hardly firin, timin mite be wrong
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craig_s
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Registered: 5th Mar 06
Location: Birmingham Drives: mk4 astra gsi
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how did you time it up?using the original marks?or did you check tdc with a screw driver?
[Edited on 07-07-2007 by sri power]
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luke gsi16v
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Registered: 3rd Jan 07
Location: Staffordshire
User status: Offline
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lined all the marks up
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craig_s
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Registered: 5th Mar 06
Location: Birmingham Drives: mk4 astra gsi
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you need to check tdc with a screw driver really.don't just rely on the marks.did you empty the hydraulic lifters too?
[Edited on 07-07-2007 by sri power]
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luke gsi16v
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Registered: 3rd Jan 07
Location: Staffordshire
User status: Offline
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put a new head that has bin rebuilt an it was clean. wats the knock sensor look like
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craig_s
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Registered: 5th Mar 06
Location: Birmingham Drives: mk4 astra gsi
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its just like a plug that had a bolt through the middle of it going on to the block.it would probably still run though.so i doubt it would be that.if i was you i would check the timing then do a fault code test
[Edited on 07-07-2007 by sri power]
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luke gsi16v
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Registered: 3rd Jan 07
Location: Staffordshire
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i will have to have a look at that
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Dave A
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Registered: 10th Dec 03
Location: County Durham
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quote: Originally posted by sri power
you need to check tdc with a screw driver really.don't just rely on the marks.did you empty the hydraulic lifters too?
[Edited on 07-07-2007 by sri power]
cant check timing marks by finding tdc with a screwdriver as TDC is about 15-20 degrees out from the timing marks on a c20xe.
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