Iv tried everything else to cure my dett problem and was just thinking that my fuel pump might be the cause. its very noisey most of the time and may be causing it to run lean. might be way wrong but i am running out if ideas now. Already changed O2 sensors, checked timing belt and Adjusted Tps to 40 and fixed timing to 15 degrees. Oh also tried another ECU just to be sure. Put in a Octane boost as fuel here is crap. but might not have been a good brand. Have i missed something.

Edited June 28, 200917 yr by richardgills

Have the fuel pressure checked. Very easy to do with a Fuel pressure gauge. Fuel pressure problems will point to either the Fuel pressure regulator or fuel pump.

 

It should be 43.4psi at idle, and raise for 1psi per every 1psi of boost your running.