Unlikely to be the head to manifold joint if it suddenly got worse from booting it. Might be from the manifold to downpipe joint (and it's blown a bit of gasket out) or it could be the manifold itself. Manifold to downpipe isn't too bad. 3 nuts on M10 studs. Nuts might come off (with the aid of Plus Gas) or the studs will unscrew, it doesn't really matter. If the manifold needs to come off, all bar one of the bolts are easy enough to get at, one, the furthest to the front on a passenger side (rather than the one furthest to the back on the drivers side), can be a pain.
Get a bit of plastic tube and, with the engine idling, shove one end in your ear and wave the other end around the manifold. You should be able to identify where it is blowing from.
- '93 Range Rover Classic 4.2 LSE, sold
- '97 Range Rover 4.0SE, in Oxford Blue with a sort of grey/blue leather interior sold as two is plenty.....
- '98 Ex-Greater Manchester Police motorway patrol car, Range Rover P38 4.0, in white with a not very recently cleaned cloth interior
- '96 4.6HSE Ascot because you never know when you might need a spare
- All running perfectly on LPG
- Proud to be a member of the YCHJCYA2PDTHFH club.