What do you expect, they don't like to sit still/go slow. Try doing highway k's, you'll find your consumption is a lot better.
Fuel smell - there is a hardpipe from the fuel filler to the engine bay - left side underneath the fuse box. From there a hose to the carbon canister at the front. That hose often splits where it meets the hardpipe. Then you get fuel smells in the engine bay. Consumption - Knock sensor working ? Water temp sensor ? Any error codes. If you look in my graph, those spikes up towards 20 l/100k are from when it was running in safety mode due to knock sensor. BTW, there is no FPCU in an NA, so fuel pump should run all the time. You need to check for error codes.
My 90 N/A averages around 13L/100km using 91 Octane. (400Km / Tank to around Empty but no fuel light). That's a mix of Freeway and city driving (my daily run) - around 50 Minutes each way for a 30K drive, and it's driven like a sports car. Using higher octane goes just as far, just it goes faster
thermostat was this changed? I once had a faulty thermostat that must have been constantly open. The car never really reached optimal driving temperature and on a cold day you could see the temperature gauge DROP. This amounted to horrible fuel consumption!
you should really check you ecu for faults . if nothing comes up then i would suggest trying to fine the fuel leak under the bonnet . have you done a bost leak check ? this may help you out a little . also red line fuel injection cleaner does good things. 1 bottle in a full tank 2 times . and dont drive it soft with it in there its good to gas it every now and then..
+1 Checking ecu for faults is the first port of call I'd say. Check your ecu, it's possible you have an error code which will make the car run like crap / eat more fuel than it's supposed to. There should be a doco in the tech section that shows how to check ecu, if you can't figure it out, you're welcome to come around and I can show you. Assuming ecu returns all good, i'd be looking for fuel leaks under the bonnet. Also, as a side note, when did you change your fuel filter last? -Kirill
changed fuel filter when Bryan z shed did a plenum pull about 8 months ago i think ,i have arranged for bryan to go over the car when i get back from overseas in sept
I can guarantee that there is a FPCU in NA's. Won't cause consumption issues though. Slow stop/start city driving will murder any economy you might hope to have.
You are right as always Chrispy. The NA FPCU is only 2 stage though - 12V or 8V under no load. The TT FPCU is 3 stage and runs 7V under middle load conditions and 6V under no load They both do 12V * 1 sec after ignition switch is turned ON * Engine cranking * Engine coolant temp below 10C * Engine running under heavy load conditions Then there is 12V for 30 sec after starting hot NA and 5 sec for TT So, what happens if you put a NA FPCU in a TT or vice versa ?
