Hi all,

weird one this- when you strat our 4.4 v8 (03) first thing its quiet as you like sounds great. When used and left for say an hour or so come back and fire it up it rattles madly for about 5 seconds (tappet noise), then goes back to being silent. Recently serviced so oil is fresh- its annoying more than anything and cant be doing the top end much good! any suggestions?

Last edited by tommac22 on 25th Feb 2011 9:44am. Edited 1 time in total

sound like the oil isn't getting to the tappets on a hot start , could be low oil pressure from the pump..did this start after the oil service? ... - .- -.




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thanks for the reply scarey- yes my inital thoughts were low pressure but light goes out almost instantly. It may well be worth me checking the pump i guess- anyone any ideas on where its located in the m62? It was doing this prior to the oil change also.

have a look on RAVE [download on wiki] ... - .- -.




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What oil did you put in there on the last oil change? If you took it to a garage they may have put an incorrect grade in, if it was too thin then it tends to drain out of the top end too quickly (when hot) and too thick it doesn't get to the top end quick enough (when cold) so as Goldilocks said: "mmm, correct grade of oil; nom nom nom"

The other thing is that your oil filter is clogged and not allowing the pressure to build fast enough - when an M62 gets to 100K it's time to increase the frequency of the oil changes due to the extra carbon contamination etc etc. 

dan,

its running 5 40 mobile 1, car has covered 83k, full dealer history prior to last service which was an insp 2 all filters etc. less than 1500 miles ago.

You need to connect a pressure gauge to determine exactly what the oil pressure is doing. Any good garage should be able to connect one up and take readings.

The oil pump is in the sump, possible cause of low oil pressure (apart from the obvious lack of oil) will most likely be worn main bearings

thanks for comments- will get the local independant on the case!

tommac22 wrote:

dan,

its running 5 40 mobile 1, car has covered 83k, full dealer history prior to last service which was an insp 2 all filters etc. less than 1500 miles ago.

Was it doing it prior to the service? Our oil filters can sometimes break up into bits. 

tommac22 wrote:

It was doing this prior to the oil change also.

apparently it was DAN..  ... - .- -.




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scarey wrote:

tommac22 wrote:

It was doing this prior to the oil change also.

apparently it was DAN..

Terribly sorry old chap. I think I must have been replying as other replies came through and I wasn't paying full attention.

*Hangs head in shame*