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Cams, Dephaser or problem?



A

Andyman

  Ph1
Thought there was something wrong for a while but recently its got worse. Going by the other vids it sounds imo like the dephaser pulley but what worrys me is the noise is coming from the top of the engine between ports 1 and 2 of the plenum. Does the dephaser noise ''travel'' or would it be clearly heard from just the pulley area?
I have cams fitted so wondered if it could be a cracked valve spring, damaged valve etc. Theres no swarf looking down from the oil filler.

Car runs very well, no drop in performance.



th_MOV05997.jpg
 
Stava

Stava

Have a drive in your car and have a look at the rev counter, iirc the dephaser pulley stops working around the 1800-2100rpm mark. If the sound deisappears around or after then, then that could be your problem.

I would imagine the sound may travel a little as its all of the bits are connected.
 
A

Andyman

  Ph1
Its very hard to pin point where the sounds coming from but its as much over the cam pulley area as it is further towards the right of the engine
 
kevin.s

kevin.s

  ibiza cupra
dephaser pulley mate. mine sounded the same as that and ive just had it done a couple of weeks ago. not cheap repair im afraid though mate. new cam belt kit, new aux belt kit, new dephaser pulley and a days labour
 
S

sideways danny

  ITB'd MK1
Your cams are re-grinds I understand. Could be that the lash adjusters (lifters) are now worn by running at their travel limit for a while and they've started to get noisy
 
JON13S

JON13S

  A4 DTM/iceberg cup
my cup suffered a similar fate...tried the dephaser and that didnt work... turned out to be a sha99ed top end including the cams... was swiftly got rid of...

mine got louder and quicker with revs until it was going so quick the noise blurred was still there though.
 
A

Andyman

  Ph1
sideways danny said:
Your cams are re-grinds I understand. Could be that the lash adjusters (lifters) are now worn by running at their travel limit for a while and they've started to get noisy
Click to expand...

This is what im worried about.

Dont want to be folking out for a cambelt kit and new dephaser only to find its cam connected once its all been put back together.

Running gears had a good innings with it sitting on 115k and modded more than 50% of its life.

Just unsure of the next move...


Out of interest, what cams run to the same spec as the Pipers? 428's ?
 
S

sideways danny

  ITB'd MK1
less total lift than any of the catcams (even 420s which are near standard), but there's no lift at TDC figures so it's hard to compare.

Worst case if you leave it, you'l wear the cams out, fill the engine with swarf, ruin the bearings and it'll go bang. Not everso likely though
 
A

Andyman

  Ph1
Mmm so really its just a case of finding out if its the cams or this dephaser.. Is there any external way of testing to confirm which it is without having to take the engine to bits?

Its always been a bit of a lumpy engine as Andy and anyone who's seen it will confirm. lol
Very happy with the power it kicks out even though god knows what exactly is giving me the power if its not the cams lol
 
S

sideways danny

  ITB'd MK1
worth hooking up an oil pressure gauge to see if there's anything unusual there.

Should be able to tell if it's VVT related by unplugging the solenoid and seeing if that changes where/when the noise occurs. Noise is normally when it's off, so if it's still noisy after the switch point with it unplugged, but not when it's plugged in, i'd say it's the phase shifter pulley.
 
A

Andyman

  Ph1
Mobile 1 :eek: - yeah i know this wont be helping if it is a part wearing prob :eek:

At a rough guess 3 to 4 thousand miles ago it was changed.


Think what i'll do is get my mate to lend me the oil pressure tester and do the solenoid thing and replace the oil with some Silkoline Pro. See how that lot goes and take it from there.

BTW what size connector should i use for the pressure tester?
 
A

Andyman

  Ph1
I'll tell him to bring a full kit.

The Mobil 1's 0w40. Been using it for years without issues although i know its possibly a bit on the thin side of ideal.
 
clio carl

clio carl

  172 with k-tec sound
when do you hear this? is it on idle with bonnet up or is bonnet down if its that problem would it sound like a disel when driving it?
 
mickstoke

mickstoke

  iceberg 172
dephaser, pumperpump or belt pulleys i just had mine done for £575 for dephaser,waterpump,kit and aux belt kits fitted.
 
A

Andyman

  Ph1
clio carl said:
when do you hear this? is it on idle with bonnet up or is bonnet down if its that problem would it sound like a disel when driving it?
Click to expand...

Over a couple of months at a rough guess. The engine seem to have got noisier.

The noise comes from the top of the engine, this is what makes me wonder if it is the dephaser? as i would have thought the noise would be clearly from the cam area.

Its not as bad as sounding like a diesel tho yet.




micksto

Pumperpump? :S How did that get in the engine bay :eek::eek: ;)

Where was that done at mate ? Good price
 
mickstoke

mickstoke

  iceberg 172
Andyman said:
Over a couple of months at a rough guess. The engine seem to have got noisier.

The noise comes from the top of the engine, this is what makes me wonder if it is the dephaser? as i would have thought the noise would be clearly from the cam area.

Its not as bad as sounding like a diesel tho yet.




micksto

Pumperpump? :S How did that get in the engine bay :eek::eek: ;)

Where was that done at mate ? Good price
Click to expand...


lol at pumperpump. had it in at a place called sherwins auto specialists in fenton stoke on trent.
 
A

Andyman

  Ph1
Word of the year without a doubt hahaha


Took the car a run. My mate couldnt find the oil pressure tester at work so we used the screwdriver method of trying to find where the noise is coming from. Where 99.9% sure its not the dephaser as the noise is as deafening all the way along the rocker cover on the inlet cam.

Think im going to get some thicker oil and try that. If no joy new cam time.


Whats the thickest oil i can use? 10W40 ? - or is it best to keep to a 5W40 ?
 
A

Andyman

  Ph1
Update.

I changed the oil yesterday and it still makes the noise. Had a 3rd person agreeing after listening to it that it sounds like top end wear rather than the dephaser so it looks like new cams will be the option sometime this year.



Very worried about loosing my impressvie torque figure with a change :(
 
mickstoke

mickstoke

  iceberg 172
when my waterpump went it sounded like it was a grinding noise and like it was coming from the cam area all across the cam box but when i replaced the dephaser,belts kits and waterpump the noise went away.
 
A

Andyman

  Ph1
Only way il find out i think is by getting the head open to see whats going on.

Had a worrying suggestion of could be worn cam jounals also:cry:



BTW Does anyone know if you can use 2nd hand lifters?
 
.Kev.

.Kev.

  260% JCW
Sorry i dont mean to hi-jack your thread but Mine sounds like yours, have you got any sound clips? Did anything change when you unplugged the dephaser solenoid?? Mine didnt. Its not there when its cold and goes at 1800rpm. Dont wana waste any money on the dephaser if it aint that though.
 
A

Andyman

  Ph1
Nah never did the solenoid test as where 99% sure its head wear as the noise comes directly from the top of the rocker cover. Someone suggested the journals in the head could be worn but went to a specialist engineer and he reckons thats very doubtful, its more likely to be worn tappets or the followers. Only way to find out is when its taken to bits which hopefully il sort out in the next week or so.

How many miles has your car done? Is it standard?
 
.Kev.

.Kev.

  260% JCW
Mines done 92k now but id say the noise has only just appeared in the last 4k or so. No doubt like you ive tryed numerous oil changes and tryed additives but no joy.

Searching the threads though i found this link http://uk.youtube.com/watch?v=88OJ7dgFdCk and it sounds very much like mine. The guy who posted it said he had his dephaser pulley, replaced but still had the noise. In the end it was the carbon canister. Going to try this tomoz.
 
A

Andyman

  Ph1
kevster said:
Mines done 92k now but id say the noise has only just appeared in the last 4k or so. No doubt like you ive tryed numerous oil changes and tryed additives but no joy.

Searching the threads though i found this link http://uk.youtube.com/watch?v=88OJ7dgFdCk and it sounds very much like mine. The guy who posted it said he had his dephaser pulley, replaced but still had the noise. In the end it was the carbon canister. Going to try this tomoz.
Click to expand...


Good way to test is the old screwdriver stethoscope test. Find out where you think the noise is coming from, hold a screwdriver point down obviously lol, against the area or area's and listen down the shaft of the driver to pin point.



Danny, is it ok to use used lifters and tappets if i need to? Got the components sitting from a old engine which had only done 14k. New as you'll know these parts cost a flaming bomb lol
 
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