joes

Thanks everybody. Sorry it took me so long to get back but here is the good news. I went back and checked the hoses closer. The pcv hose looked good from up top, but underneath it was cracked all the way across at the clamp where it comes out of the engine. One good pull and the hose came apart. It was in pretty bad shape on the bottom side. Pretty much useless. Ordered a new one and just put it on. And now I'm listening to the most beautiful sound I've heard in a long time. A 280Z with a smooth idle. YAY!!!!! Thanks again. That hose is hidden pretty good.

The idle quality is poor. Not smooth. Alot of sputtering but it never dies. But when I crimp the big hose, it idles perfect. There is definitely a leak somewhere. When I cut the engine off, I can hear a hissing sound near the FPR.

Here's what I've got. 77 280z, all stock. Was running great until one of the hoses on the fuel rail started leaking fuel. I replaced the bad hose, but have never been able to get the idle back to where it should be. I've checked and checked for leaks. Nothing I can see. But if I pinch the big hose coming off the top of the valve cover, the engine idles perfect. Not sure where to start my troubleshooting. Any comments would be appreciated.