I overhauled the carb...the good.
I replaced the spark plug wires...the good.
I replaced the fuel pump...good.
I try to start the car and all it does is pop/backfire through the carb. Acts like the wires on distributor are in wrong order, but they aren't everything is lined up and in the right place. carb is getting gas, but not flooding out. fuel pressure is great. did a vacuum test on the new fuel pump. ICM is brand new and even hooked up another as a spare. Stumped. Please help!!
You're beyond my mechanic abilities. When I hear about backfiring through the carb it sures sounds likes it timing related or mismatched spark plug wires to me. But after that I don't know what to suggest.
Good luck!
Believe I'd recheck your firing order. Sounds as though you might have one or two out of order or the timing is considerably off.
Did the timing chain jump a couple of teeth?
Make sure your distributor isnt installed 180* off
what kind of ignition/distributor do you have? Remember all you need is spark fuel compression. Sounds like you have all 3. Even if everything all checks out and it still wont start spin the distributor 180 degrees and try it....what have you got to lose....just be sure to turn it back when done...lol
Now that it is starting wonderfully, I cannot accelerate. Put it in drive and dies. Is this spark advance in distributor? There is a new coil, it acts the same way as before. New distributor cover, new wires, plugs, new fuel pump. Accelerator pump is operating as it should in carb. Is there anything to do with the transmission like a vacuum advance or switch? Could that be it?
There is no vacuum control on the original 998 automatic transmission. Shift modulation is through the throttle lever.
You haven't said if your transmission has a lockup torque converter. I'm assuming it does, and I wonder if it's stuck in lock. Easy way to test: raise the rear end so the wheels are off the ground. Be sure the transfer case is not in 4-wheel drive. With the wheels free to rotate, start the engine and put it in gear. Then try to stop wheel rotation by stepping on the brakes. If it goes into gear without stalling and then stalls/stops when you apply the brakes your torque converter may be stuck in lock. :eagle:
Sounds like the ECM Test Bypass needs doing.