Andrew

I just put a new spacer on last evening to add a vacuum source and now I think I am running a touch too lean. How do I make the carb run a touch richer?? I have a 650 DP.


[Modified by Andrew, 8:17 AM 5/28/2004]

Brettmc

What makes you think you're runnin too lean?

Brett :thumbs:

SpyderD

I am far from a holley guru (I think there is a person here named Lars that has earned the "Holley Guru" status) but you should tell us where it is running lean - idle? cruise? when you step on it?

Why would you need to add a spacer to add a vacuum source?

Andrew

I think that I am hearing detonation at idle.

Andrew

SpyderD,

I had one vacuum source running the power brakes and some other things. I just moved the power brake vacuum source by itself to see if it made the brakes even better. It did. Now I just need to tap on the brakes and the car sits right down. I don't know if this is the correct way to do this, but it works really well. :cheers:

SpyderD

Sounds like a timing issue to me, make sure your timing is not too advanced at idle, disconnect the vacuum advance from the manifold vacuum and hook it up to ported.

Adjust idle mix with the screws on each side of the carb.