r1_pete
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| posted on 22/11/08 at 03:04 PM |
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Zetec blacktop knock at idle
I've got my blacktop 1.8 up and running, at anything above a slow idle the engine sounds fine and has excellent oil pressure, no nasty smoke or
rattles.
But at idle there is a loud knocking, which stops if I press the clutch, I'm thinking this is either a noisy thrust bearing, or crankshaft end
float. Anyone had a similar problem, or ideas as to what could be wrong? Blacktop MT75, 2.0L DOHC clutch and thrust bearing....
[Edited on 22/11/08 by r1_pete]
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bigrich
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| posted on 22/11/08 at 04:14 PM |
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Are you certain its the engine, could it be a transmission rattle that stops when the gears stop spinning after depressing the clutch, or the release
brg rattling until loaded up when pressed.
.JPG)
A pint for the gent and a white wine/fruit based drink for the lady. Those are the rules
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stevebubs
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| posted on 22/11/08 at 06:16 PM |
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Mines does that - pretty sure it's the transmission hitting the chassis in my case....
[Edited on 22/11/08 by stevebubs]
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britishtrident
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| posted on 22/11/08 at 07:14 PM |
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Clutch ? On Fords tintop the clutch thrust bearing is normally held in light contact with the clutch pressure plate not so if you have a home made
clutch pedal. --- could be a little run out in the clutch is knocking on the release bearing.
To locate where the noise is comming from use either a tube as a sethoscope or a large screw driver or hammer shaft (ie hold the shaft against
various bits of the engine/gearbox and put your ear to the opposite end.
[Edited on 22/11/08 by britishtrident]
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