I've changed out my spark plugs, wires, and changed my fuel filter but I still have hesitation below 1500RPM and it has to crank a while befoe it starts up. I'm wondering if there is a definite way to know if the Opti is gone or if I need a new fuel pump. Am I just stuck with a 50/50 chance on either one?
BTW, the car is a 1993 Z28 A4.
Thanks

 

Attach a fuel pressure test gauge to the fuel rail to rule out fuel pump problems.

 

I have the EXACT same problem as you..

 

hey before you go and order parts, take a look at your ignition coil wire. i had the same problem and when i tried to take it of it just crumbled to dust at the boot.(white powder) good luck!

 

Holy ****
I have a the same problem with my '94 TA. Its get a very small constant miss and has the crank a while to start ( Fuel pump is good )
PLEASE HELP

 

I'll check the coil wire over the weekend and see if that is my problem.

 

I however have not checked my fuel pump....



one of us needs to solve this!