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Chris Davey Forums Junkie Location: sunny coast, qld Registered: October 2002	1jz problem Sat, 10 July 2004 06:17 Any help here would be greatly appreciated. My 1jz-gte developed a tapping noise on the journey to the drag strip while on the back of a trailer. That week, it had twin dump pipes and a boost controller fitted. The tapping noise is double the speed of the revs and it rises as the revs go up. To me it sounds like it is coming from either cylinder 1 or 2 by listening with a screwdriver. The noise is louder with the cam covers on as it seems to echo. it sounds exactly like a faulty hydraulic lifter but double the pace. The oil is brand new 5W40 semi synthetic. We thought it was the timing belt tensioner but that is not it. We thought it was the big ends but we pulled them off and they are fine. We pushed each valve down and they all seemed to be of equal tension meaning that it is unlikely that a valve spring is broken. We thought it was the buckets or something near there but we pulled it down and got the buckets and shims out and they were all in perfect condition. The compression was all good at around 180 and the leak down test was good at all around 13%. So to me this indicates that everything between the valves and the rings are in good condition. Somebody suggested that it was a gudgeon pin but my dad said that the noise is too fast for that as it taps twice a revolution? Does this sound right? I don't have an oil pressure gauge connected but the light doesn't come on and there seems to be quite a bit splashing around with the cam covers off. Also checked the valve clearances and they were all good. After all of this we decided to just put the turbo back on and the rest of it and start it to see if it had "magically" fixed itself. I was hoping it would but obviously it hadn't so now it is back to the drawing board. If anybody has any idea where to start looking, I would be very grateful as this is really starting to piss me off. thanks in advance Chris P.S only makes the noise when it is running not when it is cranking over? [Updated on: Sat, 10 July 2004 07:09] [Report message to a moderator]

	Subject	Poster	Date
	1jz problem	Chris Davey	Sat, 10 July 2004 06:17
	Re: 1jz problem	Mr DOHC	Sat, 10 July 2004 07:38
	Re: 1jz problem	7M-Brisbane	Sat, 10 July 2004 07:39
	Re: 1jz problem	Skip	Sat, 10 July 2004 08:32
	Re: 1jz problem	Chris Davey	Sun, 11 July 2004 03:24
	Re: 1jz problem	Chris Davey	Mon, 12 July 2004 02:30
	Re: 1jz problem	HyDrA	Mon, 12 July 2004 03:49
	Re: 1jz problem	Chris Davey	Mon, 12 July 2004 04:20
	Re: 1jz problem	HyDrA	Mon, 12 July 2004 04:27
	Re: 1jz problem	Chris Davey	Tue, 13 July 2004 13:38
	Re: 1jz problem	thechuckster	Tue, 13 July 2004 13:46
	Re: 1jz problem	Chris Davey	Tue, 13 July 2004 14:29
	Re: 1jz problem	Chris Davey	Tue, 13 July 2004 14:30
	Re: 1jz problem	7M-Brisbane	Tue, 13 July 2004 14:34
	Re: 1jz problem	Chris Davey	Tue, 13 July 2004 15:21
	Re: 1jz problem	Chris Davey	Wed, 14 July 2004 02:35
	Re: 1jz problem	Mr DOHC	Wed, 14 July 2004 10:27
	Re: 1jz problem	Skip	Wed, 14 July 2004 23:34
	Re: 1jz problem	Chris Davey	Wed, 14 July 2004 11:48
	Re: 1jz problem	Chris Davey	Thu, 15 July 2004 00:17
	Re: 1jz problem	Jag7799	Thu, 15 July 2004 00:34
	Re: 1jz problem	Chris Davey	Thu, 15 July 2004 00:43
	Re: 1jz problem	Jag7799	Thu, 15 July 2004 00:47
	Re: 1jz problem	Skip	Thu, 15 July 2004 01:38
	Re: 1jz problem	Chris Davey	Thu, 15 July 2004 01:42
	Re: 1jz problem	thechuckster	Thu, 15 July 2004 11:25
	Re: 1jz problem	Jag7799	Thu, 15 July 2004 11:20
	Re: 1jz problem	muzzyttt	Sun, 21 November 2004 14:07
	Re: 1jz problem	Chris Davey	Sun, 21 November 2004 23:21

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