wgoos

i pulled appart all the piping and re-aligned everything, done the pipes as tight as i physically could, car was running like a dream for about 20 mins then i brought it home let it sit for a while then started it up & it was shaking again, this time i checked the vaccum line that is connected to the BOV that seems to be working fine i tested the suction with my finger, im not sure where to find the other vaccum line? where is the fuel regulator located & where does the vaccum line connect to the intake manifold? if you have a pic that would be really helpful. thanks

oh yeah i can see how that would happen, where should i look? and how can i tell where an air leak would be?

I have an R33 RB25DET, in the last 2 weeks or so its been making a 'chug chug chug chug' noise and losing quite a bit of power on and off (sometimes it runs fine) this mostly happens when excelerating but still does it on the freeway etc, its much worse when excelerating tho, anyway my first thought was i need a new ignition lead, so i started up my car & let it idol till it started chugging then pulled each plug out of each coil pack one at a time while it was still chugging & it would lose a little bit of power each time, i got through all 6 of them and realised it lost power every time i done it so it is certainly not my lead, coil packs or spark plugs otherwise there would of been one that didnt lose power, i dont really know what else it would be, the chugging sounds exactly the same as when u disable a spark plug (when its running fine) does anyone have ANY ideas?