Page 1 of 1

4d56t knocking/tapping noise after new rings and bearings

Posted: Sat Nov 15, 2014 9:16 pm
by scruff123
any ideas on what this noise could be? has me stumped. have reset tappets, cracked injectors-slight decrease in noise but not shure if it just because the revs drop and it stutters wen only running on 3.
https://www.youtube.com/watch?v=Wizl0zQvaqs&list=UUiEufeFGBcIVor-sVIFp9fA

Re: 4d56t knocking/tapping noise after new rings and bearing

Posted: Sat Nov 15, 2014 11:33 pm
by FORGE1
At a guess I reckon it could be one of the injectors is stuffed. Do the old screw driver up to the ear on all of the, and see if that narrows it down bro.

Re: 4d56t knocking/tapping noise after new rings and bearing

Posted: Sun Nov 16, 2014 7:28 am
by wopass
not even goint to watch the vid but a real common one is

did you de lip the bore?

new rings in old bore will tick like a boss and probly wreck all the new rings you just put in.

just an idea

:mrgreen:

Re: 4d56t knocking/tapping noise after new rings and bearing

Posted: Sun Nov 16, 2014 7:33 am
by Crash bandicoot
yep, also happens to the face of the head too, the very edge of the lip burs over normally on the driver's side of the cylinders for some reason too.

Re: 4d56t knocking/tapping noise after new rings and bearing

Posted: Sun Nov 16, 2014 8:20 am
by yael
Did you get the correct thickness head gasket?

Re: 4d56t knocking/tapping noise after new rings and bearing

Posted: Sun Nov 16, 2014 11:44 am
by scruff123
Yup correct head gasket thickness used. It is a non turbo head on turbo block but shuldnt make a difference. And yes bores were given a de glaze. Nt shure if it was enough tho as bores were a bit scored and old pistons had dents in the top from something getting into the cylinders. Was just ment to be a cheap re ring. Not to worried. Will try the screwdriver test c if i can find exactly were its comming from.
Cheers guys

Re: 4d56t knocking/tapping noise after new rings and bearing

Posted: Sun Nov 16, 2014 11:57 am
by scruff123
It wouldnt be bearing clearances would it??? Hope not. Sounds like coming from top end not bottom

Re: 4d56t knocking/tapping noise after new rings and bearing

Posted: Mon Nov 17, 2014 5:12 pm
by scruff123
would leaving the balancer shaft belt off cause this?