Vacuum leak? or timing?

[smoked240]

Alright well I just hooked a vacuum gauge up to my car just because I had one laying around. I hooked it straight into my intake manifold and it is in the red for late ignition timing. I'm not sure if it 100% correct or if it is just a vacuum leak? It is an Rb25det.

I also notice when I come to a stop when it's hot and it will die sometimes if I don't catch it. Also while idling you can notice a little miss almost? It doesn't do it every second. About every 10-15 seconds it will drop the idle like 200 rpm if even that for a split second and then run normal.

Could this be a vacuum leak or timing? Or could it be my plugs gaped wrong?


Any help would be appreciated! Thanks

[Nibras]

sounds like a vacume leak

[smoked240]

sounds like a vacume leak


What I figured too..Know any good tricks at finding them? I tried the carb cleaner one but could not find it anywhere.

[Nibras]

shit i just take a bottle filled with dish soap and water and just spray it around all vacume lines and look for bubbles

[smoked240]

shit i just take a bottle filled with dish soap and water and just spray it around all vacume lines and look for bubbles


Alright i'll give that a shot. I have a feeling it might be my inter cooler piping. I will check my plugs too just incase. Needed to anyways.

[Nibras]

ya check and clean your IACV aswell , but like i read if your timing is off that will affect it too! so id fix that too