western Posted May 12, 2009 Share Posted May 12, 2009 Max boost on a 200Tdi should be .78bar measured at the wastegate 'T' piece according to my Defender workshop manual mine is totally standard & gets easily to .80 to .85bar Quote Link to comment Share on other sites More sharing options...
Aragorn Posted May 12, 2009 Share Posted May 12, 2009 ye theres something odd going on. I suspect it may have been turned up by someone hence spiking to 1.5+ in the lower gears. I also think theres something wrong with the fuel delivery thats causing the lack of fuel (and therefore boost and power) in top gear. Quote Link to comment Share on other sites More sharing options...
Les Brock Posted May 12, 2009 Author Share Posted May 12, 2009 Thanks for the replies, just ordered a new lift pump and fuel filter as they wont hurt as spares, if its something else , Hopefully it will be here by the weekend and I'll update ASAP Quote Link to comment Share on other sites More sharing options...
Turbocharger Posted May 12, 2009 Share Posted May 12, 2009 If you're seeing more that 1bar at the manifold, something funky's happening. If the thin "boost sense" pipe had a hole in it, not only would the fuel pump diaphragm not put enough fuel in, the wastegate would open at a higher pressure too. If you can pressurise this pipe with a workshop compressor then you can find the leak- I don't see what else would cause both symptoms. Quote Link to comment Share on other sites More sharing options...
Les Brock Posted May 12, 2009 Author Share Posted May 12, 2009 Jon When I fitted the new guage replaced all the pipe from start to finish, with solid air pipe where I could with 15 Bar fittings and short hose where not with proper fuel hose clips, presurrised with the compressor and it held contant with no leaks Even sprayed plumbers gas leak fluid on all the joins and no bubbles Quote Link to comment Share on other sites More sharing options...
Turbocharger Posted May 12, 2009 Share Posted May 12, 2009 Ok, I'll let you off then. If you're seeing big pressure at the manifold then it must be coming from somewhere (unless the gauge is duff) so that's where I'd check next - can you tee the gauge into the same pipe rather than the manifold? Remember, the engine doesn't know what gear you're in, higher gears are just a useful way to hold high load at steady speed for longer periods. Want to drag it down to Bristol one evening? Quote Link to comment Share on other sites More sharing options...
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