Well it's been days for me trying to figure out why my 240 w/ the SR heart won't hold a decent idle. So far: base timing is 15btdc, TPS in range, no visible vacuum leaks, all coils firing (new NGK coppers), MAF connected properly, etc.

The car runs and drives great past idle. It makes a solid 6-7psi and pulls great.

Sometimes it idles rough from cold start, then blip the throttle, and it cold idles well. Usually once warmed up, here we go with the rough idle.

Any thoughts will be greatly appreciated.


Thanks everyone!

PS. I searched too

 

it could be a small leak in one of the injectors

 

Thanks! I also thought of that possibility. I'll try to find some to swap out.