I know/knew nothing about what you guys were talking about at the start of the thread - but I do now, so thanks for enlightening me, I seriously did find it interesting !!
I do think you 'engineer types' do tend to count cogs and say there's a ratio - full stop - period - fact. Which of course is true. When it comes to opinions that may vary (however slight that may be!) its a recipe for melt down.
I hope that's not offensive.
TBH Diesel - those same places that slate LZ for arrogance, rudeness or what ever - generally end up degrading to the same levels themselves - except without the knowledge base. They do also tend to clear because facebook, or what ever, doesn't really care about historic records so it all gets washed away when the next person asks what size tyres they can fit on their rims.
Getting back to the OP.... I have no expertise or previous knowledge of your problem. What I can tell you though is that those rear wheel lift pumps can fail very quickly - especially if you bought an aftermarket one. Reading what's been said though, would a leak back test on the injectors and a compression test on the engine be the way to identify what's going on? Also would a diagnostic plug in not say what sort of pressure is being generated within the fueling system and therefore show if the HP pump's OK?
