Idling troubles

[Joe_SHO]

Car is a 1990. I recently took off my intake to replace spark plugs and fuel pressure dampner, and after reassembling everything the vehicle idles very rough, almost dying. If you give it gas it revs great and almost feels like it has more power than before (I did clean out quite a bit of carbon and replace plugs). I have cleaned MAF, and I didn't notice any difference when i pull the hose off the fuel pressure regulator. Fuel pressure at the rail reads about 40psi at idle and closer to 30 when I rev it. It also feels like it doesn't idle down as quickly as it used to, but this could just be that I'm used to my bike. TIA. -Joe

 

[93rev2sev]

You have a vacuum leak.

 

[SHO_ROLLER_2]

X2

Vac leak.

 

[Joe_SHO]

Any idea which vacuum line it might be? Sounds like a hiss coming from somewhere under the intake?

 

[SHO_ROLLER_2]

Any idea which vacuum line it might be? Sounds like a hiss coming from somewhere under the intake?

Check at the back of the intake, near that black plastic drum lookin' thing. I can't for the life of remember WTF it's called

I've forgotten that hose a couple times.

 

[Joe_SHO]

Got it! One of the intake bolts wasn't torqued because the manifold wasn't down all the way because I screwed that rear left bracket under the manifold rather than where it's supposed to go. Not sure if that makes sense but I'm a *****. Thanks for all the answers! -Joe