Noise from timing belt
Noise from timing belt
Hi
I noticed that the water pump was leaking so being short on time I farmed out the job to my local citman.
Anyway, he replaced w/p and t/b. I picked up the car from him last night and took it a longish run through the local countryside. When I was putting the car back in the garage, I noticed a noise which turned out to be coming from the t/b. The noise is a slight 'rrrr' type noise that can be heard if you rev to just above idle (1000 rpm) and disappears at around 1100 rpm. The last time I heard a noise like that it was from an over tensioned belt on a Nova, but the noise remained all the time.
What could this noise be? I want to use the car! I don’t want to risk a fecked engine! I have taken the top timing cover off and the belt looks ok!
Cheers,
Richard.
I noticed that the water pump was leaking so being short on time I farmed out the job to my local citman.
Anyway, he replaced w/p and t/b. I picked up the car from him last night and took it a longish run through the local countryside. When I was putting the car back in the garage, I noticed a noise which turned out to be coming from the t/b. The noise is a slight 'rrrr' type noise that can be heard if you rev to just above idle (1000 rpm) and disappears at around 1100 rpm. The last time I heard a noise like that it was from an over tensioned belt on a Nova, but the noise remained all the time.
What could this noise be? I want to use the car! I don’t want to risk a fecked engine! I have taken the top timing cover off and the belt looks ok!
Cheers,
Richard.
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I questioned a posting a couple of weeks back on I think it was Andyspares where someone had a similar problem and made the statement that they had released the spring tension but then added a bit more "to be on the safe side" which I thought was a misnomour and asked for the reasoning, particularly when they had this symptom afterwards.
From memory the logic was they were afraid of it "skipping a tooth" Now tell me, of all the cars you've ever seen, how many have ever 'skipped a tooth' on a cambelt or a timing chain?
I've never struck it, yet it's the very first thing they always come up with for a thousand problems; a bit like saying "Mr Jones died yesterday" and responding with "Did he get struck by lightning?" Short of a duffed bearing, it has to be over tensioning. Another thought of course is, do the belts on those models have a directional requirement and if so, is it on assabout?
Alan S
From memory the logic was they were afraid of it "skipping a tooth" Now tell me, of all the cars you've ever seen, how many have ever 'skipped a tooth' on a cambelt or a timing chain?
I've never struck it, yet it's the very first thing they always come up with for a thousand problems; a bit like saying "Mr Jones died yesterday" and responding with "Did he get struck by lightning?" Short of a duffed bearing, it has to be over tensioning. Another thought of course is, do the belts on those models have a directional requirement and if so, is it on assabout?
Alan S
By the time you're old enough to know it all, you can't remember why you were learning.
Hi
The belt does have arrows. The arrows are in the direction of travel.
If it was a duff idler wheel bearing, I hope my citman would of picked this up during fitting, and fitted a new one! If it was this would the noise not be present all the time?
I forgot to mention the noise is not present on cold strart (engine cold) but will appear after approx 1 min of running and get progressively noisy.
The belt does have arrows. The arrows are in the direction of travel.
If it was a duff idler wheel bearing, I hope my citman would of picked this up during fitting, and fitted a new one! If it was this would the noise not be present all the time?
I forgot to mention the noise is not present on cold strart (engine cold) but will appear after approx 1 min of running and get progressively noisy.
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The only cit belt I have seen skip a tooth is on a 1.6 petrol with the bloody awkward cambelt tensioner needeing re-tensioning after 500 miles, and a diesel 1.7 where the tensioner/spring assembly was rusted solid, have you checked the alt belt, mine is chirping but a squirt of silicone spray shuts it up instantly.
Stewart
Stewart
TZD 19 TD one of the few
Xantia Td estate, going soft
Xantia Td estate, going soft
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AHA! the petrol one is the one with the nasty tensioner, read the BOL ,you can set the tension any way you like , supposedly measuring the tension with citroen tool number%%%%%% then doing it all again after 500 miles, these can be set too tight, or too loose.
Stewart
Stewart
TZD 19 TD one of the few
Xantia Td estate, going soft
Xantia Td estate, going soft
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I would be game enough to drive it to him if it were me, let's put it that way.
I have heard it said that this apparent tightening is caused due to expansion caused by the engine heating up.
I had the noise with the Xantia 2.0i petrol and my son had a similar one on his BX16V, both cured by belt adjustment and the TZi with a 1.9 engine which has the same tensioner arrangement as the 1.6 was an absolute bloody dog to get right.
Alan S
I have heard it said that this apparent tightening is caused due to expansion caused by the engine heating up.
I had the noise with the Xantia 2.0i petrol and my son had a similar one on his BX16V, both cured by belt adjustment and the TZi with a 1.9 engine which has the same tensioner arrangement as the 1.6 was an absolute bloody dog to get right.
Alan S
By the time you're old enough to know it all, you can't remember why you were learning.