bought my second si a week ago and have noticed a few things...apart from an oil leak which looks like sump gasket at the min, i have noticed its alot worse than my last one on fuel.i can do about 30miles to £10.so its a tenner a day just to get to work
so if any one knows or has a standard air box ect to see if the air filter is the problem give me a shout!

secondly i can drive to work which is 15miles and temp gauge will just touch on the white square...then i stop and it shoots straiht up to at least half way...is this normal???
i can remember if my old one used to do it

got a noise from front passenger side as well but cant really explin it on here so ill get these two bits sorted first.lol.

thermostat myt be stuck open so ur car myt be in warm up mode for longer so usin more fuel and running colder longer, also check ur maf and lambda are plugged in cos it will use more fuel if there not, if its not any of these things u myt have to look into it deeper
good luck

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Hello! me again... I am 80% sure I still have a standard airbox sat in the shed. I will check for you in the morning If you want one give me a shout

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yes pleaaaasssssseeeee i do want one for the min to save a lil fuel......any one got a picture of engine for where all the sensors ect are ?

if it is actuall running cold as result of dodgy thermostat and not faulty gauge, that will richen the mixture and do less mpg. so could be worth replacing

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Will

i get 40 miles to £10 in my cossie

your coolant temp sensor on the thermostat could be knackered causing your car to over fuel or it might be your lambda sensor and the coolant temp sensor that does the signal for your dash might not be working correctly or your gauage might be broke too

if it was me before spending any money try and get it on a diagnostic machine to see what fault codes it thrwos up and then go from there

can you try explain what the noise on the passenger side sounds like?

ive got loads of funny noises coming from it lol.think my exhaust is knocking, when going a steady speed i.e. so you can hear the car and not the exhaust.lol. you can here a very slight rumbling...goes faster when you are going faster i got a real bad squeak on the front left suspention somewhere as well...i get a loud knock wen going over bumps from that side as well :S if that all makes sense....i no its vague

sounds like you have a bush on its way out and the rumbling could be a wheel bearing