engine knocking noise - VIDEO enclosed

[R20 CWH]

any ideas?

[youtube]87NGbSJJ_Do[/youtube]

just had the cambelt, cams, aux belt, valves, flywheel, clutch and gearbox replaced.

varied opinions, but some say its the bottom end, pistons or crankshaft.

Others think the flywheel is causing it.

Others say the lifters and rockers.

dont have a clue and any useful input would be great.

Engine was overrevved and has been in for work, but still not right.

 

[luke2607]

Dephaser?

 

[r_dizzel*]

you got pm

 

[R20 CWH]

Dephaser?

not sure. the head was obviously taken apart and they looked at that, but who knows.

:S

obviously gets more prolonged with revs.

 

[YorkshireDaz]

That sounds awful

 

[Jonff]

That does sound like a knackered dephaser (from other videos I've heard) but when they rev it the engine noise drowns out that horrible tapping/rattling noise, where as yours can still be heard.

 

[.GAZ.]

Chic matey, that sounds bad! Sounds exactly like my ph1 and that was the crank!

 

[R20 CWH]

Chic matey, that sounds bad! Sounds exactly like my ph1 and that was the crank!

im worried that is the case in which its game over and new engine.

:dapprove:

spent a f**king fortune as well on the cambelt, auxbelt and the like. Total utter waste of money.

 

[.GAZ.]

You know where a decent priced engine is thats local, was it making that noise before it went in for the work?

 

[.GAZ.]

It could also be a fvcked hydraulic lifter!

 

[richy22]

mine taps slightly but then dissappears been like it ever since I have had it. Lifters I think that is but it goes once you touch the throttle..then returns 5-10 mins later. Not as bad as that though!

 

[R20 CWH]

You know where a decent priced engine is thats local, was it making that noise before it went in for the work?

nope it wasnt and interestingly prior to the gearbox going in it never made that noise

:S

 

[.GAZ.]

Who done the work? Could bad timing cause it?

 

[R20 CWH]

renault themslves. im refusing to pay anymore to it

 

[.GAZ.]

Get it back into them, its not right at all!!

 

[.GAZ.]

Speak to Mick (Clio_va_va_voom)

He's a Reno tech!

 

[simb06]

id be tempted to say that its a hydraulic lifter thats not seated properly, i know people that have knocked them when putting the rocker cover back on, and on start up sounds similar to that.

Why did you have new valves fitted out of interest?

 

[Alastair.]

first thing i would be doing is re checking the timing, if the dephaser is caput then it will be out a few teeth.

does it struggle to idle??

 

[123stevevw]

how does it start up? ok?

 

[R20 CWH]

starts up fine, no problems.
the valves were replaced as the inlet valves were damaged with over revving.

if the timing is suspect would it be causing it to sound that bad?

 

[Sean6545]

f**k me, id say that was bottom end pal, Id whip the sump off and drop off the big ends for inspection next.

 

[.GAZ.]

f**k me, id say that was bottom end pal, Id whip the sump off and drop off the big ends for inspection next.

Thats what i'm thinkin too, really does sound nasty! I'd be having words with reno tbh!

 

[Djw John]

Obv tricky from a vid but I'd agree get that bottom end out and checked. At the minimum it may need new shells, catch it early enough and you wont need a new crank iirc.

 

[.GAZ.]

As said before Chic, that sounds exactly like my 172 and that was defo the crank that was fucked! Was it making that noise as soon as you picked it up or did you give it some beans then the noise started?

 

[Aaron182.]

my car just started making the same noise after hitting a large puddle at 40.

 

[DannoTheGreat]

yeah as the last few posts, id say it was the bottom end. get the sump asap!

 

[.GAZ.]

my car just started making the same noise after hitting a large puddle at 40.

Water in the cylinders by the sound of it.

 

[olddan]

Engine was overrevved and has been in for work, but still not right.

Were the rods bearings checked?

 

[Mike@Rentech]

That sounds shagged, very tappy top end with a deep knocking noise from bottom end.
Oil light ever come on?

 

[.GAZ.]

No lights etc Mike, its the 1st thing i asked him! New engine time i'd say!

 

[Mickb]

offft

bottom end away. just like gaz's sounded. still got the engine doesnt sound like a bad offer now.

but as said take it back to garage and kick up

 

[D1CKY]

starts up fine, no problems.
the valves were replaced as the inlet valves were damaged with over revving.

if the timing is suspect would it be causing it to sound that bad?

What do you mean they were damaged by over revving ?

Does/Did it have some sort of raised rev limit from a remap ?

I hope you get to bottom of whats wrong soon mate and that you get somewhere with the garage.

 

[rory182]

bummer, did you ask Renault to do that work specifically? Or did they specify that those items would fix it?

 

[.GAZ.]

Any news on this chief?