Loosing power after shifting/ Oil Pressure

[carpenterlan]

I have a 1990 z32 na with the 5 speed, and when its cold, right after I shift it has power for about half to a full second then just looses ~70% of its power, for about 3 seconds then slowly climbs back up. It was recently just serviced and all the injectors were replaced and I just cleaned the MAF. Also, I dont know if this is related but I seem to have low oil pressure, (Im still new to the car) I didnt know if this was a normal pressure for these or what.

[t.mcginley.jr]

the loss of power sounds like a vacuum leak

the low oil pressure could just be a shot oil pressure sensor... it's common for the stock sensor to crap out rather quickly. get a new one, put it in and see if the pressure reads differently. I suppose you could do a pressure test also, but the sensor isn't too expensive

[aroche25]

It really could be as simple as a vac leak. As mcginley said they do crap out if its original. So don't worry if it shows 0 psi and the car is running fine, without any odd noises. Just replace it, the sensor is cheap enough.

[carpenterlan]

Whats the easiest way to find a leak?

[aroche25]

Just grab or make one of these (http://www.boostpro.net/prodtester.html)