neilsmith Posted February 8, 2016 Share Posted February 8, 2016 After finally getting my car back on the road tonight I've discovered a small knocking sound when the engine is at about 2500rpm with no load on it, and only when at full operating temperature.I also noticed my oil light flickering when I was idling but my oil level is bang on, any suggestions?If it is the small end bearings, could this be sorted from the bottom by removing the crankshaft but without removing the head? Neil Quote Link to post Share on other sites
Starlet__SR Posted February 8, 2016 Share Posted February 8, 2016 Would have thought it would be easier to drop the head off than having to drop the crank out. Dont forget you'll need to drop the box/clutch/flywheel off just to release the crank. Day Quote Link to post Share on other sites
5e colin Posted February 8, 2016 Share Posted February 8, 2016 you test this with a very long screw driver down the plug hole hold the back end of the screwdriver and with other hand rotating the crank pulley left/right this way you can feel if there is play Quote Link to post Share on other sites
neilsmith Posted February 8, 2016 Author Share Posted February 8, 2016 Ok Colin I will check this tomorrow evening, thanks for the inputIl also get a video tomorrow and put it up Neil Quote Link to post Share on other sites
lukEp Posted February 8, 2016 Share Posted February 8, 2016 Small end doesn't have a direct oil pressure feed. Its more splash fed. If you've lost oil pressure it'll more than likely be big ends. If it's only slightly Knocking you might get away with a polish and new shells. If you carry on driving you'll spin a shell and you'll need a regrind and more than likely new rods and scoring in all areas of moving parts like cams and oil pump. Quote Link to post Share on other sites
neilsmith Posted February 9, 2016 Author Share Posted February 9, 2016 Luke am I correct in saying that the best way to check for the shells is to remove the sump and shake the rods about to check for play?Also just to throw it out there could it possibly be the shims rattling around? All shims were replaced around 2k miles agoNeil Quote Link to post Share on other sites
lukEp Posted February 9, 2016 Share Posted February 9, 2016 (edited) Yes that is. You might not get any movement the tolerance is only small and only needs to be out a little to make an impact on resonance noise. Your best taking each shell off and visually inspecting ever shell surface, it's clear when a shell is having surface to surface contact you'll find the cap shell will look fine and the rod shell will wear first as it's the shell that takes the beating on the power stroke. If there is signs of wear and no crank scoring have it micrometer measured up or polished and mic'd if needed and get geunine toyota shells. You'll probably already know They're 3 different sizes.Shims? You mean thrusts to stop crank float or valve bucket shims? So long as they are within tolerance, 2k won't wear them out unless they have oil starvation which would still point to big ends. Edited February 9, 2016 by lukEp Quote Link to post Share on other sites
neilsmith Posted February 9, 2016 Author Share Posted February 9, 2016 Ok I hear what your saying Luke, as for the different sized it it std size then +.25 then +.50 oversize?Shims I mean bucket shims in the head, just another option to rule outI've got a video of the engine running now I just need to figure out how to upload it lolNeil Quote Link to post Share on other sites
lukEp Posted February 9, 2016 Share Posted February 9, 2016 No toyota don't do over size bearing they are 3 different sizes which are very close to each other don't know what they are off the top of my head but someone will. Quote Link to post Share on other sites
neilsmith Posted February 9, 2016 Author Share Posted February 9, 2016 Ok il need to find this out. This is s link to a video of the engine >http://youtu.be/DUTcZfk6Kmk Quote Link to post Share on other sites
lukEp Posted February 9, 2016 Share Posted February 9, 2016 Is your manifold blowing/cracked? Quote Link to post Share on other sites
neilsmith Posted February 9, 2016 Author Share Posted February 9, 2016 Manifold does have a hairline crack in it yes but it doesn't seem to blow very bad at allNeil Quote Link to post Share on other sites
neilsmith Posted February 10, 2016 Author Share Posted February 10, 2016 Anyone else on here got any ideas or past experiences? Neil Quote Link to post Share on other sites
Faiyaz.123 Posted February 15, 2016 Share Posted February 15, 2016 Mine sound a bit louder then that before my oil pump could break. And with a new oil pump again .siezed .car is parked of for further inspection when I have time Quote Link to post Share on other sites
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