defender dinky Posted May 9, 2021 Share Posted May 9, 2021 hi all, discovery 2 4.0 v8 lpg, 2002, hoping to do head gaskets and others things in there, but first need to remove lpg system from manifold, is it difficult, is there a how to do list anywhere, was going to start it today on the drive, weather suppose to be good, dd Quote Link to comment Share on other sites More sharing options...
elbekko Posted May 9, 2021 Share Posted May 9, 2021 There are more types of LPG system than you can throw a stick at... Some pictures would help. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted May 9, 2021 Share Posted May 9, 2021 At that age I would assume it is multipoint, in which case it will just be remove the LPG injectors and plug the holes left. Wiring will likely just all unplug, but take a good look at it Quote Link to comment Share on other sites More sharing options...
Escape Posted May 9, 2021 Share Posted May 9, 2021 The easiest wat to disconnect a multipoint LPG system is to leave the injectors connected to the inlet manifold (usually bolted or tie-wrapped to it anyway) and disconnect LPG supply and electrical connectors at the rails. Than just take off the manifold with injectors to do the head gaskets. Quote Link to comment Share on other sites More sharing options...
defender dinky Posted May 9, 2021 Author Share Posted May 9, 2021 Some photos, Quote Link to comment Share on other sites More sharing options...
Escape Posted May 9, 2021 Share Posted May 9, 2021 That's a pretty clean install! I'd certainly leave the rails and injectors on the manifold, disconnect wiring/hoses and take it off as one assembly. Quote Link to comment Share on other sites More sharing options...
elbekko Posted May 9, 2021 Share Posted May 9, 2021 Very clean! I might be tempted if you chuck it out... They'll have drilled holes in the manifold for the injectors to feed into. Those nipples are usually M8 or M10 fine thread. Easiest way to know if to measure. You could pop in some bolts/set screws with some loctite to seal off the holes. Quote Link to comment Share on other sites More sharing options...
defender dinky Posted May 9, 2021 Author Share Posted May 9, 2021 Update, right mess underneath manifold, also found what looks like a dust cap amongst that mess, presume it fit on photo three, rocker covers no better,why does the block look orangery red, had they put some kind of sealant in oil, also had water in cylinder 6, but all the gasket had oil and water bubbles on them, bought this 2yr ago and was told its just had a full service, ( no paper work thou), now the whinging over, do I need to put new headbolts in, oh forgot to say the manifold bolts were loose two each end were tight others the were loose, can I reuse manifold gasket because there's isn't one in the kit, dd Quote Link to comment Share on other sites More sharing options...
defender dinky Posted May 9, 2021 Author Share Posted May 9, 2021 Another photo Quote Link to comment Share on other sites More sharing options...
elbekko Posted May 9, 2021 Share Posted May 9, 2021 That's just the cap for the schrader valve on the fuel rail, nothing to worry about. Not a fan of what looks to be a weld on the fuel rail next to it though... Block colour appears to just be from slightly dirty oil that's been sitting for a while. Same with the rocker covers, sludge deposits from the oil not getting changed often enough (and/or blowby). The valley gasket looks pretty bad, but only the outside layer? Quote Link to comment Share on other sites More sharing options...
defender dinky Posted May 10, 2021 Author Share Posted May 10, 2021 Do I reuse bolts or new Quote Link to comment Share on other sites More sharing options...
elbekko Posted May 10, 2021 Share Posted May 10, 2021 Use new bolts, or better, a set of ARP studs. 1 Quote Link to comment Share on other sites More sharing options...
defender dinky Posted May 10, 2021 Author Share Posted May 10, 2021 Do l need to put any adhesive on block before fitting head gasket, like copper grease, dd Quote Link to comment Share on other sites More sharing options...
elbekko Posted May 10, 2021 Share Posted May 10, 2021 No. Just make sure it's clean and check flatness of the head and block with a straightedge if you suspect it's been leaking. Quote Link to comment Share on other sites More sharing options...
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