won't rev past 4000rpm

[rb84gn]

replaced injectors the other day and now the car won't rev past 4000 rpm while driving. they were replaced with injectors from an 87 GN. know it's not a cam sensor. could it be a vaccum leak?
could we have un plugged something we can't see?

 

[HOTSIX]

Bad time to ask but - how clean are they ?

Did you have them cleaned and flow tested before installation ?

How long were they sitting before you got them and installed them ?

All of my problems in this car have been injector related. Didnt take much...but only one screwed up injector will foul up the whole car.

The guy I bought them from when I got Blue Tops sent me a clean / flow test receipt to back up his claim they were cleaned - but they only have to sit out of the car in the air for a short time to go bad.

Ask me how I know