FASTdan
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| posted on 18/6/12 at 07:38 AM |
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Duratec - Ticking under load
After our outing at Blyton Park over the weekend we have a ticking noise coming from our 2.3 duratec.
Idle is fine and no-load revs are fine, but blip the throttle (so minor load as the revs pick up) and you get a quite loud ticking noise. I
'think' this ticking is evident when loaded during driving - although since discovering the car has barely been moved as we dont want to
cause further damage.
Anyone got any suggestions? A quick google turned up a few comments about the aux belt tensioner but given the few miles that the tensioner has done
I'd be surprised if its that (would be a nice easy fix, but i think its wishful thinking).
I'm worried its a big end. Oil pressure seems reasonable though. Out on track it never dropped below 30psi and was mostly up at 45ish with hot
(100-105deg) oil. Even when I came off the last session at over 100deg oil temp it was still showing 10psi at the point I noticed the noise.
Engine is a standard 2.3 with the only upgrades being ARP big end bolts (should've done the bearings too I know).
Shame as the car was performing fantastically all day. 
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FuryRebuild
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| posted on 18/6/12 at 08:10 AM |
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Hi Dan
I've just bought a new unfitted tensioner - you're welcome to borrow it to eliminate it from your enquiries if you like.
I've not set or loaded it yet, and haven't read up how.
When all you have is a hammer, everything around you is a nail.
www.furyrebuild.co.uk
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FASTdan
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| posted on 18/6/12 at 08:18 AM |
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quote:
Originally posted by FuryRebuild
Hi Dan
I've just bought a new unfitted tensioner - you're welcome to borrow it to eliminate it from your enquiries if you like.
I've not set or loaded it yet, and haven't read up how.
Thanks for that - I 'think' we should just be able to run without the belt on though to eliminate it? I guess in the 'lucky'
scenario that removing the belt does cure it we may need to swap the tensioner out to determine if its that or the alternator. Ever the pessimist Im
thinking internal though...
Tensioners are easy to use iirc, just need a decent sized spanner to swing off to get the tensioner to retract as you fit the belt.
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FuryRebuild
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| posted on 18/6/12 at 08:56 AM |
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My ford alternator seems clicky anyway - It came with the engine, so I don't know if it's in a good condition or not.
Again, you're welcome to borrow it for a reference.
When all you have is a hammer, everything around you is a nail.
www.furyrebuild.co.uk
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snapper
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| posted on 18/6/12 at 11:07 AM |
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Possibilities are;
Ignition to advanced
Slight leak at exhaust manifold, these sound very much like det or valve chatter.
I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)
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Chippy
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| posted on 18/6/12 at 03:52 PM |
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quote:
Originally posted by FASTdan
I'm worried its a big end. Oil pressure seems reasonable though. Out on track it never dropped below 30psi and was mostly up at 45ish with hot
(100-105deg) oil. Even when I came off the last session at over 100deg oil temp it was still showing 10psi at the point I noticed the noise.
Hi, big ends definately don't tick, more like a clonk, and small ends sound tappie. Oil pressure seems a bit low, IMHO, but then I am used to my
V6 running around the 60 to 70 mark, even when being beaten with a big stick,  HTH Ray
To make a car go faster, just add lightness. Colin Chapman - OR - fit a bigger engine. Chippy
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Mark Allanson
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| posted on 18/6/12 at 04:02 PM |
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Can you listen to another one, my pinto ticks in similar fashion, but it is healthy injectors - in its original location you wouldn't hear it
due to soundproofing.
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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FASTdan
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| posted on 19/6/12 at 09:01 AM |
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Thanks for the replies.
Something I wasn't aware of until yesterday is that the 2.3 suffers from cam chain tensioner failures at high RPM (backlash on downshifts
hammers the tensioner due to a longer free length in the chain). Having had the rocker cover off there is at least 10mm up and down play in the chain
between the cams so we suspect that the tensioner has failed.
I believe raceline do an uprated tensioner unit so I will be calling them later to discuss....
Fingers crossed thats the problem, bit of a ballache - as it might aswell be engine out to lock the crank to remove the front pulley/cover iirc, but
at least not terminal.
[Edited on 19/6/12 by FASTdan]
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FuryRebuild
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| posted on 19/6/12 at 09:03 AM |
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I'd say ... luck escape.
The last thing you'd want is it skipping a tooth - could be terminal.
If you want a hand for half a day or so when you're doing it, let me know. I've not set the head up on a duratec so would be willing to
trade heavy lifting for watching
When all you have is a hammer, everything around you is a nail.
www.furyrebuild.co.uk
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