Alfa Romeo Forum banner

1 - 20 of 52 Posts

·
Registered
Joined
·
32 Posts
Discussion Starter #1 (Edited)
Hi guys.... Please help....

I can't pin point if it's the variator or the tappets, whether cold or hot, at idle the noise is only there until 2000rpm after 2000rpm the noise is gone until the idle comes back down and the thing starts making that annoying sound like the engine is going to break any moment, it sounds like a dry metal kinda sound as if the oil flow is low or something and the tappets are stuck or running dry, here's a link to the short video I made now,

It's a 156 2.0 TS 5 speed manual
Any help please guys...
 

·
Administrator
GT 2.0 JTS
Joined
·
5,108 Posts
Sounds like the variator to me, it starts making that noise at first only when cold but then all the time when it gets very worn.
 

·
Registered
Joined
·
2,556 Posts
I've encountered that noise before. I think the engine oil level has been too low recently or now.
 

·
Registered
Joined
·
32 Posts
Discussion Starter #5
Sounds like the variator to me, it starts making that noise at first only when cold but then all the time when it gets very worn.
My morning starts has always been of the diesel sound but as the drive goes it goes away and isn't as annoying but this noise here is sounding very much like the lifters but what I don't understand is that the damn sound goes away if I take the Rev to like 2000rpm and then as I release the gas pedal it comes back again, it's more annoying when idling and I'm a bit scared at the noise it's making as if it's dry like no oil flowing...
 

·
Registered
Joined
·
32 Posts
Discussion Starter #6
I would put my bet on Hydraulic lifters. Was there an oil change done recently? Any maintenance?
I did an oil change yes but in December used a shell 5w-30 I think if I'm not mistaken it's a fully synthetic oil though and recommended by an alfa specialist that I normally get advise from, he's a bit of a greedy guy so I can't just go to him as he will speculate stuff to be changed just to get me to spend an arm and a leg... I'm trying to narrow this down on my own that's why I need help
 

·
Registered
Joined
·
32 Posts
Discussion Starter #7
I've encountered that noise before. I think the engine oil level has been too low recently or now.
Oil level is on point, I checked that first thing and like every week or 2 cause I had read about how the oil level can play an important role for this engine... Could it probably be that the oil is gone to thin? I did do an oil change in December though
 

·
Registered
Joined
·
2,556 Posts
5w/30 recommended for a TS by an Alfa specialist?
Take his tools away.
I think that won't help in SA with its Mediterranean climate and may be the issue- if you're fortunate.
Hope so...
 

·
Registered
Joined
·
465 Posts
Vote for tappets (which isn't to say it couldn't possibly be something else).

FWIW, I think 5w-30 is too thin for these engines, especially at operating temperature. The thinnest oil I've used in my TS engine is 10W-40, with which I found the engine to be rather noisy (somewhat 'clattery' in general, I suspect tappets and maybe some piston slapping, and, variator noise very noticable at start up). Since then I've tried 10W-50 (better, i.e. general clattering and variator noise lessened), 10W-60 (better again), 15W-60 (better still), and 20W-60 (no noticable difference to 15W-60). These are all Penrite oils, though some are "full synthetic" (whatever that actually means) and others not. I can't recall which was which, but my current fill is 20W-60 "high performance mineral".

Also, the thinner the oil is or becomes over time, the more of it my TS engine consumes, but even using 60 weight oils it goes through a significant amount (especially compared to my previous Honda and spouses' Saab, both of which consume near enough to zero oil). As the oil ages it seems to become thinner, judging by the increasing engine noise, the variator becoming more noticable at start up, and the rate of oil consumption accelerating. New oil and it all quietens down, and picks up a bit of power...

Regards,
John.
 

·
Registered
Joined
·
32 Posts
Discussion Starter #12
I
Sounds to me like the heat shield in front of the exhaust manifold being loose.
I don't think so, I did check around for anything loose but I'd check that specifically today just to rule that out.
 

·
Registered
Joined
·
32 Posts
Discussion Starter #13
5w/30 recommended for a TS by an Alfa specialist?
Take his tools away.
I think that won't help in SA with its Mediterranean climate and may be the issue- if you're fortunate.
Hope so...
I'm definitely going to do an oil change, So which would you suggest be the best oil?
 

·
Registered
Joined
·
32 Posts
Discussion Starter #14
Vote for tappets (which isn't to say it couldn't possibly be something else).

FWIW, I think 5w-30 is too thin for these engines, especially at operating temperature. The thinnest oil I've used in my TS engine is 10W-40, with which I found the engine to be rather noisy (somewhat 'clattery' in general, I suspect tappets and maybe some piston slapping, and, variator noise very noticable at start up). Since then I've tried 10W-50 (better, i.e. general clattering and variator noise lessened), 10W-60 (better again), 15W-60 (better still), and 20W-60 (no noticable difference to 15W-60). These are all Penrite oils, though some are "full synthetic" (whatever that actually means) and others not. I can't recall which was which, but my current fill is 20W-60 "high performance mineral".

Also, the thinner the oil is or becomes over time, the more of it my TS engine consumes, but even using 60 weight oils it goes through a significant amount (especially compared to my previous Honda and spouses' Saab, both of which consume near enough to zero oil). As the oil ages it seems to become thinner, judging by the increasing engine noise, the variator becoming more noticable at start up, and the rate of oil consumption accelerating. New oil and it all quietens down, and picks up a bit of power...

Regards,
John.
I used to use 10w40 magnatec oil a green color gallon but this guy says I should use this 5w30 as it's recommended, I'm definitely going to do an oil change, So which would you suggest be the best oil? And does it have to be fully synthetic oil (I'm told only fully synthetic oil is to be used on this engine, not sure if that's true or what's the purpose of it)
 

·
Registered
Joined
·
32 Posts
Discussion Starter #16
Would you guys suggest an engine flush and then do the oil change? Also how much oil is supposed to be the right amount when I do the oil change?
 

·
Registered
Joined
·
2,556 Posts
If a really thorough oil change is done, it will use all of the 5 litres when changing the filter also.
Sump capacity is rated at 4.4 litres.
I'd change the filter also.
Ensure the oil is decent and it is a good quality oil filter. I wouldn't try to get the best as I don't like the sound of your engine. I don't know if this is easily fixable but I hope so.
Synthetic oil? That one is too complex to answer properly here. 5w/40 Shell Helix Ultra would be a very good oil to use. It is synthetic in that it is made from methane gas but not synthetic in that it is not a bona fide group 4 PAO or group 5 ester based oil. It seems to perform very close to quality group 4 PAO oil by judging it on post use oil analysis.
Shell is known to be a top performer when it comes to engine cleanliness. A flush should be unnecessary but check drained oil for any particle matter.

Does the noise go away after 2000rpm?
If so, before doing anything else I think taking a look under the cam cover would be a good idea. I'd want to see if anything looks damaged, badly worn or even bolts which have come undone or sheared (just to be sure).
 

·
Registered
JTD 8v Stage1+
Joined
·
263 Posts
Seems variator or tappets. If sound is coming from your last 5w30 oil change then change oil to 10w40 A3/B3 or A3/B4 and test. 2k rpm sound change may be oil pressure change. Use good oil filter. You don't need any engine flush.
 
1 - 20 of 52 Posts
Top