Replace the fuel cap since old ones can vent to much. Fuel smell could also be a sign the fuel vapor carbon canister needs replacing. Also make sure the cooling system is working correctly eg the temp rises to correct temp fast and not staying cold for a long time which might be the thermostat is stuffed and allowing the engine to run cold which affects fuel consumption since the temp sensors think the engine is still in warm up mode and burning more fuel. If you can smell petrol in the cabin you have a fuel leak. Gt. 19. 96 writes. Thanks all, i hate getting 4. Yeah, that wouldnt be good. XupNqpthnvs/Ti2GDr4Tm-I/AAAAAAAAAVc/9ISZ5pDZ3SU/s640/IMAG0144.jpg' alt='How To Install Afr Gauge Wrx Performance Rims' title='How To Install Afr Gauge Wrx Performance Rims' />That sounds like something catastrophic is wrong. Youve got to run through all the basics. It takes timesome money. First, change the engine oil ove. Then after that the gearbox oil. Then change all the spark plugs. Then the O2 sensor. O. P. More Power writes. Clean the throttle body first. Doug Nelson, education manager at UTI, takes readers through all they need to know in building your own Subaru Forester STI in Modified Magazine. Find cool custom and classic cars, muscle cars, SUVs, and trucks and browse all 991,627 vehicle pictures, for sale info, parts and builders page at CarDomain. The best Subaru WRX STi Forester XT Legacy GT Baja Turbo Performance Parts. How do I actually get to the part I need to clean Is it the back side to the shiny flap part on the throttle body And use carby cleaner I suppose Do this first. Cheap and easy to do. This is the sensor sticking out of the exhaust manifold yesWhen I say fuel smell, its an extremely strong exhaust smell. When driving you cant tell, but then come to a stop and Im getting gassed, or boot it and it smells like its burning its that bad. Microsoft Sharepoint 2013 Virtual Labs Earth. So give the temp sensor a check Would a diagnostic machine pick it up Also gearbox oil change, would I need to get that done at mechanics I know it doesnt have a dipstick. I need to go to super cheap and buy some 1. Given the extremely high fuel consumption and fuel smell, id be checking The MAF sensor is functioning properly The Fuel lines for any leaks. For a Dodgy ECUWow, lots of ideas here. Some are a bit wide of the mark. If the o. 2 sensor is faulty it wont make the car use more fuel, it just wont get optimum fuel economy. How To Install Afr Gauge Wrx Performance Rpf1If the car appears to be running ok, you have a fuel smell, and excess consumption. I have seen faulty fuel pressure regs that cause pressure to go high and they draw fuel into the engine through the vacuum pipe. I like the temp idea as well, it needs to be up around 9. I would pump up the tyres, check brake drag, check temp gauge is half way, then get a fuel pressure test. Gt. 19. 96 writes. I need to go to super cheap and buy some 1. Well its your money. When you want to make serious horsepower, you need to get into the engine. We have the parts and complete engines that will soon have your ride shredding tires. EHow Auto gets you on the fast track with repair, maintenance, and shopping advice. Whether youre jump starting a battery or insuring a new car, we can help. An AirFuel Ratio Gauge can be an essential tool for tuning any performance vehicle as it allows you to closely monitor your vehicles air to fuel ratio. S13my350z i love this generation of the WRX Really Theyve all have gotten somehow pumped up design wise, looks fugly imo. If youre happy paying 1. I think I pay 4. I can see that 1. So even if I bought new oil on every tank which I obviously dont, Id still be ahead 3. Sounds like a fuel line issue. You shouldnt be able to smell fuel. Get that fixed pretty snappy. For good fuel economy, everythingneeds to be running perfectly. Starting with good tyre pressure and good quality tyres, oil, fuel etc. Theres no way around that and cheapscating everywhere is what will make it all fail. Without the equipment to get high fuel economy it simply wont happen simple as that. O. P. User 6. 6 writes. Starting with good tyre pressure and good quality tyres,Done. Running new Goodyear nct. Brakes are being done this weekend as they are warped to crap, ordered dba 5. General ct pads last night 1. As for the oil, I have 4 litres of the same stuff left in the cupboard. My car takes 6. http m. ProductValvoline Engine Armour Engine Oil 1. W 3. 0 5 Litre8. And yeah the car runs fine guys, was a bit odd first fortnight I had it, didnt like idling sometimes very few and far between occurance but that has gone away. So the consensus at the moment. Service plugs, oil already has a new airfilterCheck sensors maf, temp and 0. Check fuel system for leaks and pressure. Brakes will be done this week will get booster adjuster rod looked at so it doesnt stickAnything Im missingO. P. Also guys. It doesnt smell when off. Only when running. It smells more like exhaust fumes. Extremely rich ones. Look around for a dyno tuning place. Most mechanics can only check that the O2 sensor hasnt fallen out. All other diagnosiss are Its fine mateThe output voltage needs to be checked. It will cost 1. 00 at a dyno shop. But just well worth the money. Thats the critical fuel economy part. Tuning for performance or fuel economy is a very similar process. User 6. 6 writes. Seriously User 6. I reckon youve said this in every opening post youve ever made. O. P. User 6. 6 writes. Look around for a dyno tuning place. Theres one 1. 00m down the road from my house Would Ford not have the correct equipment for this O. P. User 6. 6 writes. The output voltage needs to be checked. It will cost 1. 00 at a dyno shop. But just well worth the money. Thats the critical fuel economy part. The 0. 2 sensor I can replace it for 4. Gt. 19. 96 writes. Would Ford not have the correct equipment for this Usually not. A tuning house has a wideband o. Its used as a reference signal to compare how far out your sensor is from what it should be. They plug theirs in and run you car with it. Its like a stethescope and theyll know within 5 minutes what your AFR air fuel ratio actually is. Without the reference o. A Ford Dealership will have a whole new car upgrade with a correctly configured sensor all there. So yes, they will have a solution as well. Just at a different pricing level. The 0. 2 sensor I can replace it for 4. Dont feel bad about spending the money then. Theyre only made to last 5 years. Make sure you allow a week or two for the computer to reconfigure. Its not instant. AVnoidea writes. If the o. 2 sensor is faulty it wont make the car use more fuel, it just wont get optimum fuel economy. What Ive read that several times now, it makes little sense and contradicts itself. If the O2 sensors are bad, the ECU will not go into closed loop when warm. Its like running an old car on choke all the time. The fuel trim will not lean out and it will use more fuel.