Can you help

c-m-wood · Feb 4, 2010

I have a Range Rover 4.6 v8 2001 vogue .

love the the thing to bits .

but it has develuped a misfire on No2 cylinder and a knocking in the inlet manefold and the oil light comes on when ticking over but goes of at 15oo rpm .I have removed the ht lead on No 2 plug the banging stops but misfire still the same and oil light still on

HELP.

fanatic · Feb 4, 2010

may have blown blown into valley gasket and cooking the oil-has the gasket got a bulge when hot?, for the 3.5 the oil relief valve sticks hot and gets scored. (there is a tadpole relief valve to cure it)
At worse it has slipped a liner.

other causes of oil light on are worn camshafts or main bearings,but you have symptoms of head gasket/slipped liner

c-m-wood · Feb 19, 2010

My RR 4.6 v8 2001/2 It has a missfire and and the oil light still comes on at low revs I have been told it mite have a sticking valve. HOW can I fix this do the heads have to come off or just the inlet manefold????

Derek Ward · Feb 19, 2010

A sticking valve is not going to cause the oil light to come on (I'm assuming they mean a sticking inlet or exhaust valve???. Lack of oil pressure does that due to
1. no / not enough oil
2. oil knackered due to getting too hot (becomes too thin)
3. Relief valve stuck open as mentioned by Fanatic
4. Knackered bearings somewhere as also mentioned by Fanatic
Taking the Nr 2 plug lead off stops the 'banging' in the inlet manifold - Could be the inlet valve stickling slightly or, as Fanatic says, the valley gasket blown. Either way, it looks like you have some dismantling to do. If you haven't already got one, get a copy of 'Rave' by downloading from the Green Oval site, or buy one of many CDs available on fleabay. These are not advertised as 'Rave' but they are - search for range rover workshop manual. Only 2 or 3 quid each.

c-m-wood · Mar 11, 2010

Derek Ward said:
A sticking valve is not going to cause the oil light to come on (I'm assuming they mean a sticking inlet or exhaust valve???. Lack of oil pressure does that due to
1. no / not enough oil
2. oil knackered due to getting too hot (becomes too thin)
3. Relief valve stuck open as mentioned by Fanatic
4. Knackered bearings somewhere as also mentioned by Fanatic
Taking the Nr 2 plug lead off stops the 'banging' in the inlet manifold - Could be the inlet valve stickling slightly or, as Fanatic says, the valley gasket blown. Either way, it looks like you have some dismantling to do. If you haven't already got one, get a copy of 'Rave' by downloading from the Green Oval site, or buy one of many CDs available on fleabay. These are not advertised as 'Rave' but they are - search for range rover workshop manual. Only 2 or 3 quid each.

Thank: I have striped the inlet of and the right hand rockcover of only to fined a brocken Rocker shaft at the frunt by post wich is the oil feed to the rocker shaft so hence the low oil presher and light coming on. had to checked all is ok pushrod fine and strate / tapets all Ok.
Have now rebilt it put all the bits back now mite have to replace the o2 sencers as fult code P0150 and P0130 comes up on my diagnostice

Can you help

c-m-wood

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fanatic

RESPECT IS EARNED, BEATINGS ARE FREE ;-)

c-m-wood

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Derek Ward

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c-m-wood

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