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skanders
Senior Member II
Joined: 19-April-2005
Location: mansfield
Status: Offline
Points: 241
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Topic: NOISE DRIVING ME CRAZY Posted: 10-August-2005 at 18:12 |
My engine has been making a lot of noise today it was low on oil
and it was making that noise it would make when u first start
it up from cold the tappet noise and then it would shut up
and be fine well anyway it was low on oil and it was making
that noise and it was quiet but then when i put in some oil
which was fully synthetic 0w-40w it became louder and louder
until it was annoying and embaressing as people were looking
when i was in a busy street,
anyway on the way home from work i got on the duel carriage way and the
car was driving fine the revs were the same as always so on the
carriage way it was making the same noise and after 10 mins of driving
i decided to put in 3rd and really hammer it it went up to 5000
revs in 3rd and then went to 4th and 5th gear after that it
seemd fine and sounded normal as it would do all the way home
any ideas as to what it might be as i suspect it may return
in the morning when i start it up any resolutions.
Its a 1992 BMW 320I
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LuxAuto
Senior Member II
Joined: 10-April-2005
Status: Offline
Points: 225
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Posted: 11-August-2005 at 02:54 |
Are the tappets hydraulic?
If so, this noise is expected because the tappets will only adjust to
the correct clearance once sufficient oil pressure has built up in
them.
Edited by LuxAuto
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skanders
Senior Member II
Joined: 19-April-2005
Location: mansfield
Status: Offline
Points: 241
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Posted: 11-August-2005 at 18:17 |
I was thinking guys the clattering is not coming from the tappets
i dont think it seems to be the fan area its
more of a clunking clattering sound could it be the
oil filter not seating properly as it sounds like a tinny kind of noise
, or the water pump maybe ?, its really annoying and it is
intermittent and seems to get faster with the fan when u
accelerate or rev it at idle.
let me know.
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ewan.c
Really Senior Member I
Joined: 27-March-2005
Location: Paisley
Status: Offline
Points: 470
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Posted: 12-August-2005 at 03:34 |
If its a clattering, from the front, start it up, pop the bonnet and watch the belt and see if you notice it not running smoothely.
Sounds similar to what I had when the water pump went, but it went downhill in a matter of miles so beware!
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GavMac
Groupie
Joined: 06-February-2005
Location: Glasgow, Scotland
Status: Offline
Points: 75
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Posted: 12-August-2005 at 05:13 |
To be honest i would go with the water pump as well, i had a 320 for 5 years 160,000 miles on the clock when i sold it, and the water pump was the only thing to let me down very common problem on those engines, you might find the clunking you are referring to is the bearing breaking up and will probably start passing water soon (If thats is what is wrong).
Take the belt off and give it a spin and listen for a grinding or growl, or even just check for play on the bearing.
Gav
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M3 Evo
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skanders
Senior Member II
Joined: 19-April-2005
Location: mansfield
Status: Offline
Points: 241
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Posted: 12-August-2005 at 05:53 |
Ok gents well anyway i stopped the fan and it
was still making that noise so it cant be the waterpump, I then checked
the oil filter jus in case it was rattling around in their while doing
that the oil went everywhere it went on the pulley wheels and the belt,
i then put it back in and started her up and hey presto no more noise
switched off and then on again and again no more noise maybe i solved
it somehow in a freak way anyway im gonna go to work now so i will know
for sure after travelling 25 miles.
thanks for the advice so far jus a couple of things can u tell me
where the vanos is on my engine as the haynes manual dont even list it
and also the timing chain.
thanks.
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LuxAuto
Senior Member II
Joined: 10-April-2005
Status: Offline
Points: 225
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Posted: 12-August-2005 at 11:50 |
Is the fan attached to the water pump on these engines then?
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bmw325tds
Really Senior Member I
Joined: 05-February-2005
Status: Offline
Points: 361
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Posted: 12-August-2005 at 12:28 |
he fan is connected, but ny a viscous coupling, so it has a clutch that engages at a particular temparture.
Just because you stopped the fan, it doesn't meant he waterpump stop - it just means the fans not engaged!
I would go with waterpump too - is the fan running smoothly when it is engaged (and can you stop it at all times, in which case the fans knackered as well.)
Just a quick tip - if the waterpump needs replacing, do the thermostat at the same time - it's only a tenner, and sits behind the waterpump, so renew at same time! I did this on mine, and the car now comes up to temp much quicker.
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Carl
Ford Focus 1.8TDdi Estate
Ford Focus 1.8TDdi
Porsche 944 Turbo
BM's gone, but maybe only temporary!
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GavMac
Groupie
Joined: 06-February-2005
Location: Glasgow, Scotland
Status: Offline
Points: 75
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Posted: 12-August-2005 at 12:43 |
How did you stop the fan, did you disconnect the belt?
Vanos, there isn't one on that engine. But if there was it would it would be at the front of the engine at the top where the camshaft pulleys are.
Timing chain is usually covered but on the front of the engine.
Gav
Edited by GavMac
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M3 Evo
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LuxAuto
Senior Member II
Joined: 10-April-2005
Status: Offline
Points: 225
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Posted: 12-August-2005 at 13:28 |
Disconnect the belt that drives the water pump then and you
should find out if it is the water pump or not that is causing the
noise.
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skanders
Senior Member II
Joined: 19-April-2005
Location: mansfield
Status: Offline
Points: 241
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Posted: 13-August-2005 at 05:55 |
I think i put in the wrong oil grade the oil was low when i
checked it , it was jus under the mark I put in some cheap
halfords 0w-30w would the oil not be thick enough cause noise in
the engine.
I am gonna drain it all and put in some 15w-40 oil and see what happens.
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LuxAuto
Senior Member II
Joined: 10-April-2005
Status: Offline
Points: 225
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Posted: 13-August-2005 at 06:18 |
Yes, too thin an oil and cause the engine to be noisy, but I doubt that
it would be so noisy that is causes embarrassment!
By all means change the oil if the wrong grade is in it, but if that
really was the case, you would have probably damaged the engine by
now.
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skanders
Senior Member II
Joined: 19-April-2005
Location: mansfield
Status: Offline
Points: 241
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Posted: 13-August-2005 at 07:01 |
But another thing the noise is intermittent ,
-
At idle the noise only happens when it is below the 1000rpm mark about
750rpm but if i raise it to 3000rpm and let it drop it goes away
-
While driving the noise most of the time is constant but it can shut up after a half hour drive
-
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skanders
Senior Member II
Joined: 19-April-2005
Location: mansfield
Status: Offline
Points: 241
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Posted: 13-August-2005 at 08:06 |
Ok dudes i bought some oil exactly as it says in the manual which
is multigrade oil 20w/50 a gallon for £4.99 so here i
go am gonna totally drain it and then fill her up and see
what happens.
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skanders
Senior Member II
Joined: 19-April-2005
Location: mansfield
Status: Offline
Points: 241
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Posted: 13-August-2005 at 13:26 |
Still got the same rattleing noise but when i removed the belt
and tried it it went away upon further diags it seems to be
the oil pump making it it doesnt look damaged or anything.
does it need more oil ?
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LuxAuto
Senior Member II
Joined: 10-April-2005
Status: Offline
Points: 225
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Posted: 13-August-2005 at 14:37 |
Sorry, but I'm getting confused.
You seem to be jumping from one place to the next. So far, you've
suggested the noise as being caused by the incorrect grade of oil, the
water pump, the fan and now the oil pump.
What have you done exactly to make you think this way?
I'm not familiar with this engine so maybe its my own lack of knowledge
which is causing this, but from my experience, most oil pumps tend to
be driven off a gear and not a belt.
Can you clarify?
Edited by LuxAuto
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skanders
Senior Member II
Joined: 19-April-2005
Location: mansfield
Status: Offline
Points: 241
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Posted: 13-August-2005 at 16:15 |
Well to be totally honest im not sure if it is an oil pump or
not but when i opened it to take it off oil came out
so i am assuming that it is the oil pump as at the front it
has a wheel and the belt goes around that wheel and
the noise is coming from that area.
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skanders
Senior Member II
Joined: 19-April-2005
Location: mansfield
Status: Offline
Points: 241
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Posted: 13-August-2005 at 16:29 |
lux auto your question answered follow link
http://www.indiacar.com/infobank/oilpumps.htm
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GavMac
Groupie
Joined: 06-February-2005
Location: Glasgow, Scotland
Status: Offline
Points: 75
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Posted: 13-August-2005 at 17:12 |
skanders wrote:
Well to be totally honest im not sure if it is an oil pump or not but when i opened it to take it off oil came out so i am assuming that it is the oil pump as at the front it has a wheel and the belt goes around that wheel and the noise is coming from that area.
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This is the oil pump setup on your car, chain driven as you can see.
Item number one on this picture is the water pump which is belt driven and the fan is attached.
This is a picture of the complete engine where you can see the water pump, oil filter housing and most other parts you have referred too.
My only question would be was it the water pump you removed?
Gav
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M3 Evo
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skanders
Senior Member II
Joined: 19-April-2005
Location: mansfield
Status: Offline
Points: 241
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Posted: 13-August-2005 at 17:46 |
No mate I removed the one at the bottom under neath
the alternator that is the one that was making the noise
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