Grinding/bearing failure noise under small load (1093cc)
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Grinding/bearing failure noise under small load (1093cc)
Brought home my first Mk1 a couple of nights ago, but after a few miles of driving I noticed a slight grinding/bearing failure sort of noise, as if a chain was rubbing against a metal guard, coming from the front of the vehicle. I'm sure it wasn't there when I began the journey and it only seemed to fade when pulling away, placing the engine under quite a load. On the way into work over the past two mornings the same things occured. Quiet to start with then after 2 or 3 miles appearing when the engines under small loads. The noise is linked to the RPM and is present when the vehicles stationary (even with the clutch depressed) and in motion (except in gear 1 & 2 on pull away)
Any ideas what this could be and is this common on Mk1's
BTW the car an "83" 1093cc C formel E with 122414 mile on the clock
(This was initially posted under Running gear, but I think its more suited here so apologies to anyone who's already read this thread.)
Cheers
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i would take off the aulinator fan belt,, and run the engin and see if teh noise persists ( dont drive it far as this will not b chargin teh batt )
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Local Hero
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A few people I know have suggested that it could be horizontial movement in the cam or crank shaft, or even my big ends as it quitens down under load. Could either of these be possible?'
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if its a bottom end, u would have poor oil pressure,, so u could wack a gauge on there, and see what its like compaired to the hainse book
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Cheers
BTW - At key on my temp and oil lamps flash. Is that normal? On every other car I've had they just illuminate.
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When you are at idle with the engine running and you press the clutch do the revs drop? 100-150rpm is acceptable but any more than that and I would say you have a problem. This is most likely to be your thrusts are worn. If thats the case then you need to get them replaced asap.
I built an engine and for some reason fitted the wrong thrusts that were a bit too thin, was fine for a few thousand miles but when they had worn a little, they fell out. When I stripped the engine down I found the remains of 1 out of the 4 and it was welded to my crank, which was ruined and had to be scrapped. Never found the other 3!
Also as already said, check the alternator because the end bearing can go dry and break up causing all kinds of noises before it seizes.
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Just a thought, is there any thing in or around the distributer that could be the source of the problem. I only ask as when I'm sitting it the vehicle It sounds as if the noise is coming from the left hand side of the engine. probally just due to the bulkhead but thought I'd ask
Cheers
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Finally got around to checking the Alternator and changing the Water Pump. Unfortunatly the noise is still present.
To recap I have a grinding, bearing failure sort of noise in all engine running conditions apart from when I pull away in 1st or 2nd gear. Its there whether I'm stationary or moving, have the clutch depressed or not, and in all gears (apart from that explained above) and increases with RPM.
Can anyone help? :dontknow:
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