This is my 1st post on here so hello to everyone.appologees if this gets a bit long winded.
Recently i bought a 2003 a4 avant as a project car.now when i bought it it was acting up qith the power issue.the owner was honest and told me she put unleaded in the tank(roughly 3 ltrs of petrol when the fuel light had just come on so prob 1/8 of a tank).i have changed the under bonnet fuel pump for a known good one and also changed the filter.the problem is that at a cold start up the car runs sweet with plenty of power.then as it hits optimum running temp it takes ages to build up reves.now its not yhat it cant rev just that it really labours after 2k.there are no lights on the dash and the pump in the tank is working.any ideas?i dont have any software i can connect to the car with so really shooting in the dark.many thanks for taking the time to read this and thank you in advance for any help you can give.
Recently i bought a 2003 a4 avant as a project car.now when i bought it it was acting up qith the power issue.the owner was honest and told me she put unleaded in the tank(roughly 3 ltrs of petrol when the fuel light had just come on so prob 1/8 of a tank).i have changed the under bonnet fuel pump for a known good one and also changed the filter.the problem is that at a cold start up the car runs sweet with plenty of power.then as it hits optimum running temp it takes ages to build up reves.now its not yhat it cant rev just that it really labours after 2k.there are no lights on the dash and the pump in the tank is working.any ideas?i dont have any software i can connect to the car with so really shooting in the dark.many thanks for taking the time to read this and thank you in advance for any help you can give.