Deer hunter Posted August 25, 2007 Share Posted August 25, 2007 More use on my problems with my 3.9 that has been stood for 2 years. Was missing a little, and puffing fumes out of the exhause like mad. ECU changed, air byepass valve ,colant and fuel tempm sensors changed. Then n otices that the oil is half way up the dip stick> Well smells more like petrol. There is no froth in collant, no crankcase compressio. So out with the injector, tested none leaking?? Compression test show all cylinders but 1 at around 190 - 200 , 1 at 165. Is that enough to cause a probleM I did put in some expensive fuel additive that I was told would clear thge injectors, I did this nprior to testing them. How long would it continue to smoke if the problem has been cured? Any ideas on what I should do next please ? Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted August 25, 2007 Share Posted August 25, 2007 Have you changed the oil & filter? A search should yeild FAQ about compression tests, google throws up some good stuff too - this site is particularly good for tech. Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted August 25, 2007 Share Posted August 25, 2007 For the injector stuff cleaner to work the engine has to be running - then the petrol and cleaner does its trick - over time. How did you test the Injectors ? The best way is to have them ultrasonically cleaned and tested, A cheap way is to take the whole of the fuel rail off leaving injectors connected to rail, turn upside down switch on - none should leak, remove Coil to Dizzy lead so it won't try to run - then turn key and see if they squirt and then when you stop cranking do they equally stop squirting ? This WILL spray fuel around at HIGH Pressure so be very carefull ! Fuel Pressure test is the other thing you need to do, also check each injector with a multimeter to chaeck reading - see the test manual I ahve shoved in the tech forum Nige Quote Link to comment Share on other sites More sharing options...
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