meiguoren33

Any luck?

tinman

Replace filter.
I think that needle/seat may be the problem........

tinman

Jetting won't really matter.......

Grimace5.0

I worked late tonight so I didn't get to mess with it.

The needle & seat are new from the Holley kit.

Tims 88GT

I did not read the whole post, but it sounds like its rich. Did u change the jets?

meiguoren33

Jets don't come into play when idling. Only the idle mix screws, when you hit the gas the transition slots give it a little gas until the air blows past the jets. Of course the accel pumps also make up the lag between opening the flies until the air can pick up gas from the jets.

But, since there are two power valves, the base gasket is not blocking the orifices where the power valves recieve the vacuum signal right?

Joel5.0

Jay;

I think this article (if you don't have it already) might be of help. GL

Grimace5.0

Hmmm... thats a good question. The prev owner had a plug in the rear. When I rebuilt it I put the PV's in it.

Joel, thanks for the link, I was looking on there last night.

I'll mess with it tonight and see what I can figure out.

Grimace5.0

Alright, I adjusted the secondary throttle blade. It now appears ( from the top ) that it is completely under the transition slot. I re-set the idle speed ( primary throttle blade position ) and tried the air mix screws. Now when I turn them in the engine speeds up. I thought it was supposed to die when you turn them in?

Another question/opinion..

When I rebuilt it I put a power valve in the rear. From the factory BG says it's plugged. Maybe I should plug it and see what happens?
Typically when you remove the power valve you jet up 4 or 5 sizes. I have 74 and 78 jets now, from BG they are 71 and 79. Thoughts?

Tims 88GT

dont know what to say. i know nothing about carbs but ill ask my dad when he gets home. He might know something.