well my injectors were leaking so I replaced them and why not replace the fpr since it was old and I was taking the fuel rail off anyway.thats how I see it. so it has to be something else

 

Cool. did you pull the injectors to see if they are working?
(I just changed a bunch of stuff and am chasing my **** too...)

 

What did you use for the feed line in the tank on your Walbro pump?

 

yea I mad sure injectors are working. Im using the factory feed/return lines and the factory pump diaphram with a new Walbro pump in my 86

 

opti or maf!
its a pain but the opti could have thrown off the rotor! This happened to my brand new MSD a few months back! If you can get a hold of another maf try switching those out first.

 

not to hijack, but how do you check the injectors themselves?

 

when you gently pull off your fuel rail,turn the key just so it primes(do not start engine) and you will now if they are leaking. I hope it is the MAF causing my problem, this is one of few sensors I did not replace.My opti is a new AC Delco unit also.

 

for a year and some i have ran my car with out 02s. i hooked them up recently and now sometimes under load it back fires stumbles puts lots of wierd stuff. i get a code saying my maf is bad. switched it out and it still says its bad. i dunno. i want to sayits the opti but somtimes it still runs good. maybe our cars just dont like us. but im sure if i unplugged the 02 sensors the problem will go away.

 

86Camarolt1: did you ever figure this out?

 

yea it was the MAF. but now my fuel pump is taking a **** on me. has anyone replaced their fuel pump from inside rear of the car instead of dropping the tank