Hello all, I have been battling a problem with my 93 318is for about 5 months now. It runs strong when cold but as it reaches normal operating temp, it seems to bog down when the accelerator is applied medium to hard. I have learned to back of the accelerator just a bit and the hesitation goes away, as long as I apply the accelerator slowly thereafter. I have checked and replaced all old or worn vacume hoses. I have sprayed carb cleaner around hoses to identify leaks. I have good compression and burn no oil. (plugs are all normal) I have taken the Idle air control valve off and cleaned it. If the fuel pump was weak, would it not happen all the time?
ANY input would be greatly appreciated.
Dave