Tibout Posted September 4, 2016 Share Posted September 4, 2016 Hi Have been having some issue I can't get my head around lately. So the Landy is slighty a struggle to start up first thing in the morning. When she start up there's loads of white blueish smoke and throttle response is not great it misfire a bit. There's a lack of power as well. The thing is if I switch her off and back on she come back to life very responsive. Works I've done recently ( with all new head set bits) straight through exhaust decat pipe recon turbo new intercooler new radiator EGR removed Machined exhaust manifold ( it was warp) new Fuel filter housing with new filter Full service oil and filter ( axle, transfer box, gearbox) The start up was worst before changing the fuel filter housing. to get her going first thing is while i crank her i just give a little tap on the throttle. Any ideas why if i switch her off then back on again she comes into life? It feels like the ecu have a fault in memory and then it clear the faults when switching back on. There's no faults showing on nanocom and all the readings looks ago. Any ideas will be great. Thanks Thierry 1 Quote Link to comment Share on other sites More sharing options...
Tal Posted September 4, 2016 Share Posted September 4, 2016 Do you hear the fuel pump start up when you turn the key but before you start cranking the engine over? Quote Link to comment Share on other sites More sharing options...
Tibout Posted September 4, 2016 Author Share Posted September 4, 2016 yeah i do hear it it's not noisy or anything.. Quote Link to comment Share on other sites More sharing options...
gerrymc123 Posted September 4, 2016 Share Posted September 4, 2016 I'd nearly bet money it's the MAF sensor A dodgy one doesn't show up as a fault as the ECU resorts to a default setting rather than showing a failure. Quote Link to comment Share on other sites More sharing options...
Tibout Posted September 4, 2016 Author Share Posted September 4, 2016 I thought the same and replace with a genuine one's and still the same. seems like the ecu kept the original fault in memory unless i restart the landy and it drives perfect after great power no issue at all. It only happens on the first start up Quote Link to comment Share on other sites More sharing options...
Landrovernuts Posted September 4, 2016 Share Posted September 4, 2016 Put a clear section of hose in the fuel return line and check for bubbles. A friend had the exact same issues which turned out to be air in fuel issues. Toby Quote Link to comment Share on other sites More sharing options...
Tibout Posted September 4, 2016 Author Share Posted September 4, 2016 will it be the return from the engine towards the fuel filter? How did he sort out the problem. My fuel pressure regulator is the only thing i didn't replace there's no obvious leak. Quote Link to comment Share on other sites More sharing options...
Landrovernuts Posted September 4, 2016 Share Posted September 4, 2016 Yes, after the fuel cooler. Run it in a loop and if there is air you will see it easily. Cured with a new air fuel filter bleed valve, injector seals - then he sold it! It may not be your issue though but worth eliminating. Put the hose on with good clips etc as you do not want fuel spraying out of any leaks - there is my get out! Google it as there are loads of video clips of people doing this on youtube! Toby Quote Link to comment Share on other sites More sharing options...
Tibout Posted September 4, 2016 Author Share Posted September 4, 2016 Thanks Toby i'll have a go at it tomorrow. There's new injector washer and o ring when i rebuild the head. New air bleed valve and non return valve when i swap the new fuel filter housing. I reckon it could be one of the fuel line split or the Fuel pressure regulator itself. Quote Link to comment Share on other sites More sharing options...
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