first i have an 86 N/A i have and idle prouble it will start up and go to 3000 rpms and then die right after that but it will start right back up. what is the proublem???? it has good fuel pressure all the way around.

 

Big vacuum leak.

 

ok i know theres a big vacuum leak on the intake manifold

 

I'm having the same problem... Kinda...

 

should i jus buy new intake caskets and see what that does for me?

 

Track down the leak using standard techniques. I like to get the engine running and warmed up, then squirt water around the engine bay. You will find the vacuum leak when the engine sucks in the water and changes tone.

 

ok thanks

 

ya i cant the engine warm because the car only runs for 5 seconds

 

Find a shop that uses the smoke system to test for vacuum leaks. the engine does not have to be running.

 

well i found the vacuum leak its on the lower intake manifold

 

Its it a seal that needs to be replaced? if so replace it. Or if its a crack then replace the intake. The hard part is finding the leak. The repair should be self explanitory after that.