Fatha thestags land rover is sick

[richardthestag]

Fatha thestag's land rover series iia found a new and novel way to entertain him yesterday

 

Car is a standard 2.25 petrol 4 pot. From cold it is fine, after a couple of miles it looses a lot of power and when under load makes a very loud knocking noise. Coming along the north devon link road yesterday it struggled to make 20mph up the long hills

 

Revving the engine with no load sounds ok but it is breathing a lot of oil out of the breather, oil cap and exhaust.

 

When driving feels like it is only running on 3, the exhaust note seems to match that.

 

Obviously it needs to come apart but what horrors should we expect?

 

Anyone got a decent 2.25 pez that they want to sell?

 

 

Cheers

[Albert Ross]

Compression test first. Two adjacent cylinders would tell me the head gasket had blown between them. One low might be a burnt out valve, and no real difference might be the head gasket blown into a pushrod tube. Regular thing with the 2286 units. I keep a head gasket "in stock" for mine.

[richardthestag]

Cheers for that.

 

Would the head gaskit cause the horribly loud knocking noise? Could it be compression escaping to pushrod holes and into the sump maybe?

 

Like you say compression check first then head orf and have a tinker with it.

 

Fatha thestag is away for a couple of days so will look at it in a week. I am back down there in 2 weeks so will arm myself with a head gasket set.

 

Cheers again

[Albert Ross]

If it's blown between 2 and 3, the normal place, then it's firing one, whilst the other is the opposite end of the order,i.e. sucking in air, so it ignites the fuel air mixture in the inlet manifold......... hence it's rather gutless. If it's between 1 and 2, or 3 and 4, it's a different story. It will be firing and igniting the uncompressed air in one, and the already burnt mixture in the other.... If it's an "under load" tapping, it's likely to be this. If it's a permanent tapping, I'd say a valve burnt out or a pushrod tube area gasket failure. Head gaskets are cheap as chips if you go to the right places. Keep us posted! I bet you're too far away to pop over and take the piss out of.. erm I mean have a nosy.