barty
Posted a lot
Posts: 1,088
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I have a mk1 escort with a crossflow and i have a bit of a rumble from the engine its not a deep rumble so I'm not convinced thats its big ends. It seems to come from the front but down low ( front big end??). don't thinks its the timing chain either as its not a tingling sort of noice. I'm just about to take the alternator belt off to eleminate the alternator and water pump, and more ideas before i rip the engine out. Oh and there is oil in there and no i don't have a oil pressure gauge fitted
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barty
Posted a lot
Posts: 1,088
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Sept 9, 2011 12:02:37 GMT
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ok taken off the fan belt and no more rattle, so good news the engine will live for another day lol, so its either the alternator or the pump, the alternator spins ok by hand and ive a gut feeling its the pump so ive orderded a new one and it should be here at 4 oclock, brand new from a motor factors for £20 inc gaskets...ill keep you posted
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Sept 9, 2011 12:47:59 GMT
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was going to say, big ends tend to make a knockign noise, mains do the rumbling.
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bl1300
Posted a lot
Posts: 1,678
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Sept 9, 2011 17:07:25 GMT
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I was going to suggest mains as well but as its not their with the fan belt off its not. I reckon your going down the right path. Let us know how you get on please
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Current fleet.
1967 DAF 44
1974 VW Beetle 1303s
1975 Triumph Spitfire MkIV
1988 VW LT45 Beavertail
1998 Volvo V70 2.5
1959 Fordson Dexta
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barty
Posted a lot
Posts: 1,088
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Sept 13, 2011 9:16:38 GMT
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well got a water pump but it was the wrong one (CVH)so re-ordered another so hope to fit it later today
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barty
Posted a lot
Posts: 1,088
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Sept 13, 2011 11:08:27 GMT
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ok... now ive changed the pump and the rumble is still there. If i take the fan belt off the noise stops so as far as i can make out its the alternator or, as soon as the fan belt is back on and the crank is loaded ie driving the water pump and alternator is starts to complain.
Next step for me is to check the crank pulley for any looseness and to see if there is any visual slack...Anyone got any more ideas??.
I can rev the engine without the fan belt on and it still quite, it only when the belt is back on
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barty
Posted a lot
Posts: 1,088
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Sept 13, 2011 19:05:08 GMT
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ok changed the alternator still got the rumble, tried getting a crow bar between the pulley and block but there is no movement at all. ANYONE GOT ANY THOUGHS ?
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bl1300
Posted a lot
Posts: 1,678
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Sept 14, 2011 18:22:09 GMT
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Right if its only audible with the engine loaded by the ancillary belts. Revving it with them off may not make it audible as the engine is not under load. If you where to try and drive the car even a couple of cars lengths would you be able to hear it?
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Current fleet.
1967 DAF 44
1974 VW Beetle 1303s
1975 Triumph Spitfire MkIV
1988 VW LT45 Beavertail
1998 Volvo V70 2.5
1959 Fordson Dexta
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barty
Posted a lot
Posts: 1,088
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Sept 15, 2011 11:08:42 GMT
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good point ill try that next, but i think ive ruled out th pump and alt so looks like it may need an engine change, anyone got a pinto
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Big ends?Deleted
@Deleted
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Sept 15, 2011 14:34:24 GMT
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Hi have you taken off the crank pulley and checked the woodruff key and made sure the crank pulley isn't cracked. also look at the groove the belt runs in is it very worn? did you try a new fan belt. You can get some funny noises when the belt/crank v is worn badly as the belt sits tight in the V. Realy a worn out big end will rubble when you rev hard, do you have an oil presure gauge, if not rig one up as it might be your pump is on the way out as the oil light will only come on when there's no presure  |
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