supraGZaerotop Posted December 4, 2008 Share Posted December 4, 2008 theres a strange noise ive noticed over the last few weeks. basically in the morning when the car is cold there is a strange rattle sound at 2000k when moving! the oil pressure light goes out in a blink of an eye so im not worried about anything like that. This is what its doing. i jump in the car first thing, start up, put in D and off i go, after maybe 100yards @2000k i get a tappy sort of rattle which is intune with the revs/engine speed but can only first hear it @2000k when the car is moving, now ive stayed parked up first thing to see if it does it, but only seems to do it when moving. now if i pull over after ive started my journey maybe 100 yards and put it in N and blimp the throttle i can hear it plain as day. it only does this noise for a good few hundred yards and is then completely gone for the day. id describe it as a sort of a very loud injector/sticking hydralic tappet noise( but the supra has solid shims so it carnt be that). maybe even a ticking exhaust gasket noise, its really getting on my nerves to be honest. so what could make a rattle/tapping noise when cold, can only hear when moving @2000k and above?? Quote Link to comment Share on other sites More sharing options...
bignum Posted December 4, 2008 Share Posted December 4, 2008 I get excactly the same noise mate untill the oil is warm, i described it as valve clatter when i asked the question, in fact if you google valve clatter it throws a load of things up mainly toyota but not many supra related, it sounds like a dry shim until the oil is circulated fully. Quote Link to comment Share on other sites More sharing options...
Ian C Posted December 4, 2008 Share Posted December 4, 2008 How thick/thin is your oil? -Ian Quote Link to comment Share on other sites More sharing options...
bignum Posted December 4, 2008 Share Posted December 4, 2008 I`m on 10/50 pro-s Quote Link to comment Share on other sites More sharing options...
supraGZaerotop Posted December 4, 2008 Author Share Posted December 4, 2008 thanks for reply, i use the 10/ 40 semi. Quote Link to comment Share on other sites More sharing options...
supraGZaerotop Posted December 5, 2008 Author Share Posted December 5, 2008 I get excactly the same noise mate untill the oil is warm, i described it as valve clatter when i asked the question, in fact if you google valve clatter it throws a load of things up mainly toyota but not many supra related, it sounds like a dry shim until the oil is circulated fully. i just read youre thread. sounds the same. is it ok to ignore or should i get it checked. a mate of mine is a very good fitter and so i told him about it, he said dont worry about it, im mean the car when warm sounds perfect, smooth, and pulls like a train. i changed the oil about 5months ago, not done much mileage tho. my car has used 500ml of oil in 6 months tho, these supra seem to like a little oil. ive used magnatec 10/40. what the best oil to use in these engines, always being told not to put fully syn oil in her. Quote Link to comment Share on other sites More sharing options...
Ian C Posted December 5, 2008 Share Posted December 5, 2008 Crikey well I've only ever put fully synthetic oil in mine. To be honest without hearing it and seeing the behaviour myself I'm only guessing. I was wondering if the oil was either so thin it was draining out the top end overnight or so thick it wasn't getting there fast enough, causing valve rattle when initially started, but if you say it only happens when you drive... Tootling off on the cold start cycle shouldn't put any sort of unusual stress or strain on anything so I've no idea what it could be. -Ian Quote Link to comment Share on other sites More sharing options...
Big Supes Posted December 6, 2008 Share Posted December 6, 2008 I would be swaying towards big end bearing failure (death rattle), but I don't think this is common with the 2JZ..... I'd keep a very close eye on it. If it gets worse, stop the engine and take it to a garage or post a sound clip on here for diagnoses before continuing to use it. Hope this helps. Quote Link to comment Share on other sites More sharing options...
bignum Posted December 6, 2008 Share Posted December 6, 2008 My noise is definately coming from the top of the engine, like just under the rocker cover. Quote Link to comment Share on other sites More sharing options...
supraGZaerotop Posted December 6, 2008 Author Share Posted December 6, 2008 I would be swaying towards big end bearing failure (death rattle), but I don't think this is common with the 2JZ..... I'd keep a very close eye on it. If it gets worse, stop the engine and take it to a garage or post a sound clip on here for diagnoses before continuing to use it. Hope this helps. im pretty sure its not that mate, the engine is sweet as a nut, from what ive read on these forums about rattles it sounds common and could be anything. big ends!(surely if it was bottom end it would rattle all the time even more when warm?). its got full service and has only done 82,000miles so i carnt see it being big ends. after christmas im going to leave it up my mates garage so he can take it out in the morning one day and he can listen to it for him self. personally im thinking very loud injectors, valve clatter or maybe something else maybe pulley wise. again ive started the car up outside the house and sat there for ex amount of time and it does nothing, only happens after i pull off about 30 yards up the road @2000rpm+. funny because i was up the garage the other day and my mate had a zetec ford in for service, he had it running in the garage and it was making a loud ticking/tapping noise, and i mean pretty loud and i said to him, thats what my supra sounds like, he said injectors, are the injectors on the supra after a few miles excessive loud or? Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted December 6, 2008 Share Posted December 6, 2008 Its not injectors, theyre just a solenoid, if its noisy its noisy all the time. JZ's use hydraulic actuated valves, bucket type, if the shims need doing they will be noisy regardless. My Soarer is noisy when cold, one valve makes a noticable noise. But when warm all you hear is the quiet ticking of the injectors. I hate recommending engine flushes cos they do more harm than good generally but Id recommend one for you, just to clear any shit out of the head that might be there. Quote Link to comment Share on other sites More sharing options...
supraGZaerotop Posted December 7, 2008 Author Share Posted December 7, 2008 (edited) Its not injectors, theyre just a solenoid, if its noisy its noisy all the time. JZ's use hydraulic actuated valves, bucket type, if the shims need doing they will be noisy regardless. My Soarer is noisy when cold, one valve makes a noticable noise. But when warm all you hear is the quiet ticking of the injectors. I hate recommending engine flushes cos they do more harm than good generally but Id recommend one for you, just to clear any $#@! out of the head that might be there. thanks for the info fella, il get to the bottom of it soon, what i want to try first off is a good oil change with the best fully syn oil i can get. what is the recommend oil for these cars, just day to day driving no track days or nothing like that, the odd bypass blast thats all:d. http://www.mkivsupra.net/vbb/showthread.php?t=165344&highlight=rattle Edited December 7, 2008 by supraGZaerotop (see edit history) Quote Link to comment Share on other sites More sharing options...
Ian C Posted December 7, 2008 Share Posted December 7, 2008 JZ's use hydraulic actuated valves Are you sure... Quote Link to comment Share on other sites More sharing options...
Big Supes Posted December 7, 2008 Share Posted December 7, 2008 im pretty sure its not that mate, the engine is sweet as a nut, from what ive read on these forums about rattles it sounds common and could be anything. big ends!(surely if it was bottom end it would rattle all the time even more when warm?). its got full service and has only done 82,000miles so i carnt see it being big ends. after christmas im going to leave it up my mates garage so he can take it out in the morning one day and he can listen to it for him self. personally im thinking very loud injectors, valve clatter or maybe something else maybe pulley wise. again ive started the car up outside the house and sat there for ex amount of time and it does nothing, only happens after i pull off about 30 yards up the road @2000rpm+. funny because i was up the garage the other day and my mate had a zetec ford in for service, he had it running in the garage and it was making a loud ticking/tapping noise, and i mean pretty loud and i said to him, thats what my supra sounds like, he said injectors, are the injectors on the supra after a few miles excessive loud or? True it would rattle all of the time, but that would depend on the degree of the failure. Also, no, it wouldn't get worse when it's hot... if anything, it would get better; the play is taken up due to the heat (expansion). To reiterate though, I would be surprised if it WAS the big ends due to the trend among other JZ's. It could be a number of things without hearing a sound clip/it in person. Quote Link to comment Share on other sites More sharing options...
supraGZaerotop Posted December 7, 2008 Author Share Posted December 7, 2008 il try and get a video/sound clip of it. Quote Link to comment Share on other sites More sharing options...
Big Supes Posted December 7, 2008 Share Posted December 7, 2008 Sweet. I'm sure someone will be able to shed some light on here. Quote Link to comment Share on other sites More sharing options...
supraGZaerotop Posted December 8, 2008 Author Share Posted December 8, 2008 (edited) i will get a video of it very soon, tomorrow probably. but for a little update, i did for the first time today be bothered to stop and get out of the car before the noise went away. surprised as i was sure it was coming from the top end/shims sort of thing etc. anyway i stopped at 5.30am this morning and popped the hood, i was under there and could not here anything what so ever, just a sweet 2jz on cold idle, gave the throttle a blip a few times but nothing, i thought thats strange so i sat back in the car with the door open, gave the throttle a blip, there this noise is again, but only then did i hear where it was really coming from and thats underneath the car towards the front/turbo side of the engine. so its not top end. whatever it is, its down below. i really am thinking small manifold/turbo gasket leak to be honest, would explain the noise and how it goes away so quick after maybe 200/300yds, the supra gets hot very quickly as we all now, so maybe its expanding and sealing its self very quickly. this is what i hope it is rather than bottom end rattle. Edited December 8, 2008 by supraGZaerotop (see edit history) Quote Link to comment Share on other sites More sharing options...
Big Supes Posted December 8, 2008 Share Posted December 8, 2008 Could be well be. I genuinely hope so in any case. Exhaust gas leaks usually have a distinctive sound. If I was in your position I would get under the car, even if you lay down next to it and try to see if it's coming from the exhaust system, then get someone to blip it. TBH, you should be able to hear a exhaust leak on idle though... Quote Link to comment Share on other sites More sharing options...
supraGZaerotop Posted December 9, 2008 Author Share Posted December 9, 2008 (edited) here is a vid i done this morning. think its about the best quality i can do, if you listen to it, listen for that weird ticky tap. THIS IS VID OF JUST THE END OF THE CLIP, THE NOISE THIS A FULL CLIP SHOWING FIRST START UP AND DRIVE MAYBE 250YDS Edited December 9, 2008 by supraGZaerotop (see edit history) Quote Link to comment Share on other sites More sharing options...
Big Supes Posted December 9, 2008 Share Posted December 9, 2008 Hmmmm... had a good listen through the headphones and it doesn't sound like the big ends. From the high pitched ring to it, I can't help but think it's a lose bracket/heat shield/pipe vibrating. I've asked for opinions on another tech forum I post on for extra help. Quote Link to comment Share on other sites More sharing options...
bignum Posted December 9, 2008 Share Posted December 9, 2008 Sounds different to my noise, yours does actually sound like a gas leak. Quote Link to comment Share on other sites More sharing options...
supraGZaerotop Posted December 9, 2008 Author Share Posted December 9, 2008 (edited) i couldint really say, i dont 100% know what a gas leak would sound like, im puzzled myself. all i know is you cannot hear it up top under the bonnet, only in the cab or outside under the car. the only thing ive done recently is had a new exhaust fitted, maybe june. maybe il try and get under the car to see if i can spot anything, il leave the car up my mates garage at some point over night so he can take it out when cold, funny thing he said he had a supra twin in the other day for its turbos to be changed. does the vid/audio sound ok to you POSTED ANOTHER VID NEXT TO THE OTHER ONE Edited December 9, 2008 by supraGZaerotop (see edit history) Quote Link to comment Share on other sites More sharing options...
Luka-P Posted December 9, 2008 Share Posted December 9, 2008 When you start the car up, keep an eye on the oil pressure light. If the noise is there when the light is on, you have a big end problem. That video doesn't sound as if it's bottom end. Quote Link to comment Share on other sites More sharing options...
supraGZaerotop Posted December 10, 2008 Author Share Posted December 10, 2008 When you start the car up, keep an eye on the oil pressure light. If the noise is there when the light is on, you have a big end problem. That video doesn't sound as if it's bottom end. the light goes off straight away as you can see in the video, i didint think it sounded like it aswel, could the autobox make this sort of noise maybe, but how about when ive put it back in to park? reason i ask this is becasue as i said in the earlier post i can jump in the car and start up, sit there for as long as i want and it does not do this noise, it only does this noise under load/select drive and go. i still think its exhaust gaskets around the manifold/turbo. Quote Link to comment Share on other sites More sharing options...
Luka-P Posted December 10, 2008 Share Posted December 10, 2008 When my big end went it would only knock upon start-up. No noise was there during driving/under load. It then began to do it whilst I was driving. I thought it was an autobox issue at first but found out it was worse Quote Link to comment Share on other sites More sharing options...
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