I have an 88' Turbo II, it was running fine about a month and a half ago. Then there was a lack of power while I was driving it. I drove it home and while it was idling in neutral, i tried to raise the RPMs. The revs slowly reached 5000 and then it dropped off to idle while still in full throttle. Since then it's only been able to reach about 1500 playing with the throttle, all it wants to do is just idle. On cold start it does jump up to about 3000.

I've done some tests since then. I did also notice that before any of this happened. While on the road in gear, if you put it in neutral the RPMs would rise about 500. People have told me that it was an indication of a fuel problem. So that's where I began.

I had the Fuel Injectors Cleaned.
Replaced the Fuel Filter.
I have good spark.
I'm pretty sure that the timing is fine.
Checked for any visual fuel leaks and found none.
I want to check the Fuel Pressure, but where's a good place to do that?
(In the engine bay or all the way in the back where the pump is?, what's the
normal fuel pressure reading?)
What else could be a problem?
Would a bad Fuel Pressure Regulator cause this?, how would I check mine to
see if it's still good?
A Pulsation Dampener wouldn't cause this would it?
I was also thinking that the Fuel Pump could be going out, but I didn't notice
any whining from it though. Then again that's not always the case.
I really need some help, I really need to start driving this car. Its been in the garage way too long.

 

im guessing its the fuel pump, im sure someone of more knowledge can help you so ill give you a free bump

 

If it comes down to my fuel pump, what's a good one to purchase.
I want to still have a pump that's still in the tank in the stock location, but most likely one with more pressure.
I've seen the Walboro 255, is that a decent one?

 

uh compression check comes to mind.

 

How does a home mechanic check the compression on his rotor and what should the compression be, I have a piston engine compression tester i could borrow, ps mines a 90 gx, thanks

 

I think you put the compression tester on the Trailing side of each rotor and check and then I think you do the same to the Leading side; I'm not exactly sure about this though.