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Topic: Bag of HAMMERS ???? (Read 834 times) |
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grandadman
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Bag of HAMMERS ????
« on: Nov 16th, 2007, 11:18pm » |
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When my Cossie 24V starts up the engine sounds as though it had a bag of hammers within, then after 1 or 2 seconds it quietens down to a nice sound.
Can anybody advise what this could be 
I have an idea or two but no experience at all 
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harry.m1byt
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Re: Bag of HAMMERS ????
« Reply #1 on: Nov 17th, 2007, 8:12am » |
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Timing chain and /or (doesn't the 24v have hydraulic tappets? ).
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Snoopy
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Re: Bag of HAMMERS ????
« Reply #2 on: Nov 17th, 2007, 8:17am » |
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At a guess Timing chains .. Might just need new tensioners for the chains which is quite an easy DIY Job have a look HERE Others on the site might be able to help more
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deconick
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Re: Bag of HAMMERS ????
« Reply #3 on: Nov 17th, 2007, 8:20am » |
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hello mine does that and its worse on these cold mornings its just that timming chain rattle,its the hydrualic chain tensioner drains on my one i didnt think i was going to stop it took a good 5 seconds the other day,they sound much better in the summer when its warmer
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v4-max aka Cheekyboy1
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focus cc mk3 mondeo 2.0 auto cbx750 vt600
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Re: Bag of HAMMERS ????
« Reply #4 on: Nov 17th, 2007, 3:20pm » |
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yep as above mine rattles too, castrol magnatec helps alot. if i leave the car for a week it gives about a 2 second rattle. if started daily no rattle at all [53,000 mile engine]
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Matt
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Re: Bag of HAMMERS ????
« Reply #5 on: Nov 17th, 2007, 6:13pm » |
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think this is a common problem on the 24v's
naff chain tensioners that drain of oil when the engine is off
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scorpio_man
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Ford Kuga awd
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Re: Bag of HAMMERS ????
« Reply #6 on: Nov 17th, 2007, 6:25pm » |
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hi there
a way to help this problem is to start the engine (from cold) using the Wide Open Throttle method.
FULLY open the throttle and while keeping the pedal on floor, turn the engine over for a few seconds. this will build up the oil pressure a bit, thus reducing the chain rattle (engine won't start as the ecu thinks it's flooded).
now the bad bits. 
your WOT relay/TPS MUST working correctly. a 24v with a dodgy chain doesn't sound nice when starting at 6000rpm when cold!!!  if the engine fires with your foot on the floor, switch it off right away.
you need a good battery to cope with the longer starts.
hth
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v4-max aka Cheekyboy1
Full Member
focus cc mk3 mondeo 2.0 auto cbx750 vt600
Posts: 563
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Re: Bag of HAMMERS ????
« Reply #7 on: Nov 17th, 2007, 7:05pm » |
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 i use this metod if not started all week. no rattle at all.
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