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excessive tapet noise(not fixed) 

 

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 Post subject: excessive tapet noise(not fixed)
Posted: Wed Aug 30, 2006 6:29 pm 
Getting Side Ways
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gday guys.
well after my mate decided to go a 2nd hand engine after the 3.9 had blown its head and water jacket he decided to get a 4.0 from a eb to put in.

We picked it up today and all was fine for about 10mins then this really loud tapet noise started...now im assuming that the bloke who did the engine just put in s**t cheap oil as its a duel fuel car and really needs 15-40w oil....while its idling it doesnt make this noise but when you are driving it it really stands out.

changing the oil now to some 15-40 grade as thats what i run a my duel fuel 8 to see if that fixes the prob.

One question thought...would a bad spark cause this prob? i dont think so myself but im not 100% sure cheers.

 

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Last edited by NC 5ltr on Wed Aug 30, 2006 8:43 pm, edited 1 time in total.

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Posted: Wed Aug 30, 2006 6:37 pm 
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f**k dumb C***....dropped the oil and its water thin...no wonder it was going off its head...will see how this new oil goes.

 

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Posted: Wed Aug 30, 2006 6:54 pm 
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well thought it was fixed doh: but the noise returned..only whenthe car is hot...could it be cracked tapets? or something else..cause im stuffed...i thought i had it fixed with the oil.

coud it be timing or spark related?

cheers for the help

 

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Posted: Wed Aug 30, 2006 8:45 pm 
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bump

 

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Posted: Wed Aug 30, 2006 8:50 pm 
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If the motor has just been built it is possibnle that the oil gallery feeding one of the hydraulic lash adjusters is partially blocked. To work out which one it is try grabbing a decent sized screwdriver and whack the metal end up against the rocker cover and the handle end in your ear. Starting at the front work your way to the back. The rattle will be real loud over the dodgey one!

Hope this helps mate!

 

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Posted: Wed Aug 30, 2006 9:10 pm 
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xhute0 wrote:
If the motor has just been built it is possibnle that the oil gallery feeding one of the hydraulic lash adjusters is partially blocked. To work out which one it is try grabbing a decent sized screwdriver and whack the metal end up against the rocker cover and the handle end in your ear. Starting at the front work your way to the back. The rattle will be real loud over the dodgey one!

Hope this helps mate!


2nd hand motor mate only has 150000kms on it....should i do this with the engine running or off?

regards

 

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Posted: Wed Aug 30, 2006 9:44 pm 
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Gotta be running mate!

 

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Posted: Wed Aug 30, 2006 11:20 pm 
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15-40W may be too thin for a used engine. Try some some thicker oil, or try half a litre of Moreys oil additive to your existing oil. Moreys is fantastic for engine noises.
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Posted: Sun Sep 03, 2006 8:57 pm 
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turned out to be the oil pump in the sump...so he is getting that fixed tomorrow under warrenty so that will be good not to mention how much it wouldve cost $$$$

 

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Posted: Sun Sep 03, 2006 9:01 pm 
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Easy to say but that was gunna be my next suggestion. Lucky its under warranty but if the oil pump is stuffed there is no telling what damage has been done to the bottom end.

 

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Posted: Mon Sep 04, 2006 12:35 am 
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only drove it for about an hour...so all should be good.

 

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Now with el thermos fitted.

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Posted: Mon Sep 04, 2006 12:37 am 
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I understand 'stockstandard' (who is always very helpful and informative) expalined to me what hydrualic lash adjusters look like and how they get pumped up with oil, but how does it work, its just a small disc. Is it because it forms some sort of seal that simply applies pressure using oil pressure to cushion the lash?

 

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Posted: Sat Sep 09, 2006 2:00 pm 
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Well after all that has happened(replaced timing chain,replace oil pump) they still couldnt get it right so they have decided to rebuild the engine.They are going to replace all seals and gaskets and strip 2 engines to get the best parts out of both(both engines have around 150000kms) not to mention the other parts that were installed to try and fix the original problem.

Sideye will hopefully get his car back monday or tuesday after a basically 6 week wait for it to repaired and after an initial outlay of $800 for the 2nd hand engine he is basically getting a recod engine for 800 and another 100 for a xr6 cam installed.

hopefully this will work out otherwise insurance job might be in order :)

 

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Now with el thermos fitted.

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