Reyft Posted October 24, 2014 Share Posted October 24, 2014 (edited) I came home then find space to park my car, stopped the car (automatic 2jz gte) to reverse in parking space when i put reverse gear and full acceleration in 2000 rpm, same time i heard knocking noise from engine or gearbox!!, I just turn off engine & pushed with friend to parked, UnTill i put reverse gear every thing was sound perfect idle, push it hard or even cold start first in morning not any little knocking from engine.. It is just happened in sec!! I cant believe that very good condition 77,000 mile engine does to me that!! Before i came home i drive it hard 1.4 bar & pushed hard ect.. So now when i start engine anytime it is makes loud knoking, just started 6 sec to learn what is it!! But hard to say What could be this knocking do you are think ? Any one had like this experience!? I have some idea but tell me what do you think you are first please, Thanks for interesting.. Edited October 24, 2014 by Reyft (see edit history) Quote Link to comment Share on other sites More sharing options...
wile e coyote Posted October 24, 2014 Share Posted October 24, 2014 Oh dear! Quote Link to comment Share on other sites More sharing options...
add heywood Posted October 24, 2014 Share Posted October 24, 2014 It cant be...? Can it? Quote Link to comment Share on other sites More sharing options...
The Raven Posted October 24, 2014 Share Posted October 24, 2014 Erm. 1.4 bar? on stock tubbies? Im interesting Quote Link to comment Share on other sites More sharing options...
Dnk Posted October 24, 2014 Share Posted October 24, 2014 Maybe it's done 177,000 miles. Not many things knock inside an engine, bottom end possibly, post up a video, whats the oil like in it ? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted October 24, 2014 Share Posted October 24, 2014 It's a six cylinder piston engine that works just like piston engines have from the year dot. *ANY* decent mechanic should be able to listen to it offer a professional opinion as to what it may be. You are far better finding such a person locally and asking them to listen to it. Diagnosing by e-mail, from afar is just a waste of time. Just do the basics and check there's oil in the sump, no lights are staying on on the dash that should not be, and there's no oil under the car, and get local advice. That's my advice anyway I wouldn't keep starting it to attempt a diagnosis, given the symptoms. Quote Link to comment Share on other sites More sharing options...
Reyft Posted October 24, 2014 Author Share Posted October 24, 2014 That make me mixed up because it is just happened in idle!!! No it is 1.4 bar 607 hp 700cc injectors and every think it is need.. All done professional.. I know it is low mileage engine! Anyway i think big end bolt or crack piston! I hope engine block is fine. I will check cylinders with camera to find any mark there, if not, will check piston movement with turn crank by hand if any free play piston rods then open sump. Time to spent money then!! So i think i have enough idea myself!! may be it is flywheel but sound like i'm not that lucky this time!! Thanks all Quote Link to comment Share on other sites More sharing options...
jazz1 Posted October 24, 2014 Share Posted October 24, 2014 Pay membership and join up this is a great forum . Quote Link to comment Share on other sites More sharing options...
Reyft Posted October 24, 2014 Author Share Posted October 24, 2014 Maybe it's done 177,000 miles. Not many things knock inside an engine, bottom end possibly, post up a video, whats the oil like in it ? New Oil gets dark in it 1,500 mile after hard use, i use valvoline 10w - 60 oil is good Service done 2500 mile ego Quote Link to comment Share on other sites More sharing options...
Reyft Posted October 24, 2014 Author Share Posted October 24, 2014 Pay membership and join up this is a great forum . Supra's are great to I had not problem with this toy yet this way, I love old shape Toyota's they are very strong & good choose to hardly use.. Japan engineers build this cars very attentive, They are not like new shapes Chinese shit!! especially when open heater fan to full power first few sec fan-motor start low voltage to rev little up then later gives full power, technic to save fan-motor doesn't makes to much resistance in system & motor soon as will get member, thanks.. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted October 24, 2014 Share Posted October 24, 2014 You could cut the oil filter open and endoscope through the sump plug to look for shrapnel in the oil filter, or on the oil pump pick up gauze. A leakdown test should show piston damage sufficient to cause a knock. If a big end bolt has failed you'd experience a lot more than just a knock Good luck, hope it's nothing too dire. Quote Link to comment Share on other sites More sharing options...
Reyft Posted October 24, 2014 Author Share Posted October 24, 2014 (edited) Ok i just make sure no more i will start this engine, sound to me small end (crack piston) or big end free play, conrod bolt, bearing!! Here is video & picture of engine https://vimeo.com/109945627 Thanks Edited October 24, 2014 by Reyft (see edit history) Quote Link to comment Share on other sites More sharing options...
Ian C Posted October 24, 2014 Share Posted October 24, 2014 It's making the noise at 900rpm so not valves or cams... Quote Link to comment Share on other sites More sharing options...
Reyft Posted October 24, 2014 Author Share Posted October 24, 2014 You could cut the oil filter open and endoscope through the sump plug to look for shrapnel in the oil filter, or on the oil pump pick up gauze. A leakdown test should show piston damage sufficient to cause a knock. If a big end bolt has failed you'd experience a lot more than just a knock Good luck, hope it's nothing too dire. Thank you MR Chris.. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted October 24, 2014 Share Posted October 24, 2014 Im interesting Haha not heard that for ages Quote Link to comment Share on other sites More sharing options...
Reyft Posted October 24, 2014 Author Share Posted October 24, 2014 It's making the noise at 900rpm so not valves or cams... You think so hmm!! i know timing belt need replace. I just bought timing belt for change it, it is coming saturday.. Quote Link to comment Share on other sites More sharing options...
Reyft Posted October 24, 2014 Author Share Posted October 24, 2014 (edited) so this engine pistons are low compression are they easy to hit valves? Thanks Edited October 24, 2014 by Reyft (see edit history) Quote Link to comment Share on other sites More sharing options...
Lee P Posted October 24, 2014 Share Posted October 24, 2014 That doesn't sound very nice, also has a compression issue as you can here on cranking As Chris said, get a local mechanic to have a quick listen as its hard to tell on a video Quote Link to comment Share on other sites More sharing options...
TBDevelopments Posted October 24, 2014 Share Posted October 24, 2014 Compression test before anything else Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted October 24, 2014 Share Posted October 24, 2014 So hard to say from a video, but if I *HAD* to guess, it's sounds outside of the engine internals. Maybe loose crank damper, cam belt tensioner issues or loose flywheel. But *JUST* a guess!! Does not sound like big end or piston, so hard to tell..... Quote Link to comment Share on other sites More sharing options...
Paul Whiffin Posted October 25, 2014 Share Posted October 25, 2014 Oh dear, sorry to hear that noise, could be a lot of things causing it though. If you want us to look we are in North London so probably not too far. Thanks Paul Quote Link to comment Share on other sites More sharing options...
Dnk Posted October 25, 2014 Share Posted October 25, 2014 (edited) Pretty easy to rule out the CP and other pulleys, if they're making that much noise they should be on the verge of falling off Edited October 25, 2014 by Dnk (see edit history) Quote Link to comment Share on other sites More sharing options...
np89 Posted October 25, 2014 Share Posted October 25, 2014 it actually sounds a bit like when I had a blow in the manifold gasket at the turbo. Doesn't really sound like a mechanical knock as such. Sounds like a diesel which usually means a gasket leak Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted October 25, 2014 Share Posted October 25, 2014 It's an automatic isn't it? If so does the noise stop or change when you put it in "D"? If it does stop or change radically it suggests a loose flex plate or torque converter. Quote Link to comment Share on other sites More sharing options...
Paul Whiffin Posted October 25, 2014 Share Posted October 25, 2014 It's an automatic isn't it? If so does the noise stop or change when you put it in "D"? If it does stop or change radically it suggests a loose flex plate or torque converter. We've seen that where the bolts actually sheared off! That made a right racket but still drove somehow. Quote Link to comment Share on other sites More sharing options...
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