would it cause a slow rpm to 6k

 

It may. But put a scanner on it and see what everything is doing. Because without having some base data your not going to get very far. And if you are suspecting an injector or fuel pump check valve put a fuel pressure gauge on it and see if the fuel pressure drops rapidly. I am wondering as to why you are suspecting these two things though.

 

You need to be more descriptive on the problem. I assume that you slow revving....how is the power level? Major loss?

Could be a clogged cat or exhaust. If you still have a cat.

 

What does "slow rpm to 6k" mean?

If you mean it lacks power, the check valve in the fuel pump has nothing to do with it (it only holds fuel in the line on shutdown) and a single dripping injector wouldn't affect the other 7 cylinders. And as noted above, you can check it in 5 minutes with a fuel pressure gauge.

But your description of the problem is not really clear.

 

it seems like the rpms go up slow but it still moves pretty quick i havent taken it to the track yet, so i cant really tell.

as for the cat its gone.

and i scanned it last week the only thing that came up was MAP sensor low? dont know what that means or how to fix it. any ideas??? thanks

 

Which code did you get:

DTC 33 = Manifold Absolute Pressure (MAP) sensor circuit (signal voltage high, low vacuum)

DTC 34 = Manifold Absolute Pressure (MAP) sensor circuit (signal voltage low, high vacuum)

In either case, the two most critical sensors in the speed-density fueling system used in you 93's ECM are the manifold absolute pressure (MAP) sensor, and the inlet air temp (IAT) sensor. An error from either of those will screw up the ECM's attempts to achieve the desired A/F ratio. A faulty MAP sensor will also mess up the ignition timing map and the limits used for the long term fuel correction cells.

If you clear the code, how fast does it come back?