kill story and a vac leak problem
 

i finally got my first race since my crx got it's turbo.
it was a friend of mine with an MR2 250whp that runs a low 8 in the 8th mile
we did a freeway run from 60ish by the time i got into 4th gear i was quite a few cars ahead of him.
we did 4 runs, on the last one i just dropped 4th and he pulled about a fender from me then i flew past him.
i need to get a video for you nogs. i'd take it to the track, but i have blown out shocks wrapped in ebay coilovers and crappy tires. so 1-2nd gear is nothing but spin.
i've been having a problem with my charge pipes blowing off so i took them off today and flared out the ends. they held fine for the races so that was good.

however i do have a vac leak. when i'm at idle the rpms bounce from 500-1500 over and over.
is there a hmt way to find the leak?
if i had a boost leak in my charge pipes would that cause a vac leak? or is it like a normal n/a vac leak?
just wanted to post this for you nogs.

Re: kill story and a vac leak problem
 

check and clean your idle air control valve 9 times out of 10 thats what it is

Re: kill story and a vac leak problem
 

i think it is called the fit valve in the throttle body tighten that bitch up my car did it forever

Re: kill story and a vac leak problem
 

To check for a vac leak in charge piping, use soapy water and look for air bubbles.

Re: kill story and a vac leak problem
 

but thats not what is causing is problem...spray some brake cleaner or starting fluid/carb cleaner around where you suspect a leak. First thing i would mess with is the idle screw on the TB

Re: kill story and a vac leak problem
 

Yea its that wax plunger jobby right at the TB. I had the same issue. Tighten that bitch up and your good to go.

Re: kill story and a vac leak problem
 

i forgot to say that the rpms only do that when the motor is warmed up.

Re: kill story and a vac leak problem
 

IACV then, I believe.

Re: kill story and a vac leak problem
 

i'm gonna check the idle screw to see how the o-ring looks then i'm gonna pull the iacv. if it's none of those how do i find the leak with carb cleaner.

also can i pull the vac lines for all the ---- that is on the fire wall? i know the map sensor is there, but what else has to stay?
here is a pic of what i'm talking about.
Attachment 18239

Re: kill story and a vac leak problem
 

I have a similar problem with my sol right now. Try the iacv first, and look over all your vacuum lines for cracks, decay, std's, ect. I ziptie all my vacuum lines on just for peace of mind. In my case, I also suspect an electrical problem in the weird idle, as the previous owner relocated the battery and did the engine swap, and he was a retard. So when I have time, I'm going to clean the iacv, go over my ground wires, and probably add a few more for good measure. I expect that to fix my idle. Give it a whirl