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Topic: Rattle on start up (Read 1181 times) |
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robrs2
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Rattle on start up
« on: Aug 7th, 2009, 10:07pm » |
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Started my sierra 24v bob to hear one hell of a rattle for a few seconds. Thought it may be the chain tensioner so did a search on here.
But is it fixable and what goes wrong.
Is it the hydraulic chain tensioner failing or just down to poor oil pressure as it could do with an oil and filter change.
Also i have hear a loud click/bang as the engine warms up. I've never been able to pin down where or what that may be.
Rob
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Highlander
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13 Scorpios, XR4x4, Suzuki SJ413 for off road :)
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Re: Rattle on start up
« Reply #1 on: Aug 7th, 2009, 10:11pm » |
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Sounds like the chain guides may be broken as a result of the tensioner failing.
Oilways get blocked and the tensioner doesnt tension the chain, it slaps around and breaks the guides or can even jump on the cogs.
You will probably find them lying in the bottom of the sump beside the oil pick up! 
Can be disastrous if they block it but doesnt happen very often.
Only way to really check whats happened is to get in and have a look.
Some engines seem to run for long enough with the chain rattle but it a sign something is wrong.
Unless you've spent money on that engine the quickest cheapest solution is another engine 
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on Oct 17th, 2011, 12:35pm, Simmo wrote:I give up !  Too much for an old boy!  |
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granorpio
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1998 Silver Facelift Cosworth
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Re: Rattle on start up
« Reply #2 on: Aug 7th, 2009, 10:40pm » |
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on Aug 7th, 2009, 10:11pm, Highlander wrote:
Oilways get blocked and the tensioner doesnt tension the chain, it slaps around and breaks the guides or can even jump on the cogs. |
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Can the tensioners and guides be changed in situ
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- Mike -
So nearly said "goodbye" but now Scorpio will see another day, alongside the replacement! eek!
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gozz
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Been around awhile
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Re: Rattle on start up
« Reply #3 on: Aug 7th, 2009, 11:56pm » |
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Rob.
The cracking sound as the Cossie warms up is obviously something expanding,mine does exactly that with no detrimental affect.You can change all the timing gear in situ if you have plenty of time and patience ! If you were a mechanic earning you living doing motor repairs,I doubt that the Cossie owner would be prepared to pay what you would have to charge him 
GOZZ.
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robrs2
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Re: Rattle on start up
« Reply #5 on: Aug 9th, 2009, 12:00pm » |
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Was thinking of taking the BOB out for a Zetec. Looks like its an engine change then.
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amigafan2003
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Re: Rattle on start up
« Reply #6 on: Aug 9th, 2009, 7:54pm » |
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They can go on for ages with a rattle - I wouldn't be swapping it out just Zetec
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Highlander
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13 Scorpios, XR4x4, Suzuki SJ413 for off road :)
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Re: Rattle on start up
« Reply #7 on: Aug 9th, 2009, 9:29pm » |
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they can but they can also snap with a rattle...
usually late at night when its dark raining and you're in a hurry 
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on Oct 17th, 2011, 12:35pm, Simmo wrote:| I give up ! Too much for an old boy! |
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amigafan2003
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Re: Rattle on start up
« Reply #8 on: Aug 9th, 2009, 10:03pm » |
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They can just as likely snap without a rattle.
That's what and AA/RAC card is for.
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robrs2
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Re: Rattle on start up
« Reply #9 on: Aug 9th, 2009, 11:44pm » |
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Turned it over until the oil pressure light went out, then let it start. No rattle.
Anyway the engine is coming out to go into a saff i have, just hope its fixable
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tlundkvi
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Ex. Scorpio 2.9 24V -95
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Re: Rattle on start up
« Reply #10 on: Aug 10th, 2009, 6:47am » |
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on Aug 9th, 2009, 10:03pm, amigafan2003 wrote:They can just as likely snap without a rattle.
That's what and AA/RAC card is for. |
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Or what I have: Car towing service from the insurance. If left on the road, it covers towing expenses + even hotel for up to 5 days depending on how far home it is (otherwise it covers transport home and back to the serviced car etc.). Only "stupid" thing with it is it doesn't cover repair costs. Not sure if this is a standard insurance in UK, quite common in Finland.
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amigafan2003
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Re: Rattle on start up
« Reply #11 on: Aug 11th, 2009, 1:20pm » |
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Quote:| Turned it over until the oil pressure light went out, then let it start. No rattle. |
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Oil in the tensioners is draining overnight then - takes a couple of seconds for the pressure in them to build back up, hence the rattle while the chain whizzes round untensioned.
You can take the tensioners off and give them a good clean - sometimes helps. Only £1.80 for each of the gaskets as well.
Quote:| Only "stupid" thing with it is it doesn't cover repair costs. Not sure if this is a standard insurance in UK, quite common in Finland. |
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AA/RAC etc don't cover repair costs either - hey are simply "recovery" policies - i.e. they'll try an basic "get you home repair" and if that doesn't work then they'll recover your car/get you home/get you to where your going depending on your level of cover.
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wojtekor
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AA has/had an extra plan for a few quid they cover up to 500£ of repair costs...
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robrs2
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Re: Rattle on start up
« Reply #13 on: Aug 12th, 2009, 1:01am » |
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I'll take them off for a clean
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a900one
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A scorpio is for life not just for christmas
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Re: Rattle on start up
« Reply #14 on: Aug 15th, 2009, 10:04pm » |
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I will be interested in the result as mine rattles a bit on startup. I think the problem one is the one under the alternator, I have thought of replacing it.
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