i bought a toyota surf 2.4 manual with a blown turbo,ive fixed the turbo but i now have problems with it aparently over fueling,ive cleaned out the manifold and cleaned out the fuel lines and now have a new exhaust system on it.the problem i get is it will start up fine ,oil pressures ok and temp gauge is ok and when started will tick over lovely and no smoke, but when i touch the excellerator it sticks down and revs go through the roof and smokes alot,we had to stall it so it wouldnt blow it.ive been tol it could b sensor in the fuel pump or summat to do with the sensorsensor to do with the throttle or excelorator. could you please help me im at the end of my teather ,i just dont know what to do. thankyou.