Nothings ever easy

[TBP]

did you adjust the float level and idle mixture on the new holley?

No, I have not done that yet.

As an update. I tinkered with the timing this morning, and I am pretty sure it's fine. However, she still stalls out. At one point it seemed like it was going to stay running. I was able to get out of the car and walk around and look under the hood while it was running. She ran for probably a minute, and then stalled out. I am back to thinking vacuum leak somewhere.

 

[notny41]

When mine had the vac leak, it did almost exactly what you are describing. Once it warmed up it would idle a little better, but I was always having to fiddle with the pedal to keep it running when it was cold. Did you check the extra vaccuum nipples on the back of the manifold/carb spacer to see if those rubber stoppers are not cracked? Also, do you have an auto timing advance? there is a vaccuum line that runs that as well.

I wouldn't overlook the float level post though - I would think that could give you the same symptoms.

 

[84convertablegt]

im not too familiar with clevelands, but could your vacuum leak be where the intake actually mounts to the heads like on a windsor? this is a common problem. also, are u using a carb spacer. i tried using the factory 4bbl spacer when i added a holley and edelbrock intake and even with all the right gaskets i had a major vacuum leak that caused symptoms just like yours. i ended up buying a plastic 1 inch spacer, and all problems were solved. just an idea

 

[TBP]

When mine had the vac leak, it did almost exactly what you are describing. Once it warmed up it would idle a little better, but I was always having to fiddle with the pedal to keep it running when it was cold. Did you check the extra vaccuum nipples on the back of the manifold/carb spacer to see if those rubber stoppers are not cracked? Also, do you have an auto timing advance? there is a vaccuum line that runs that as well.

I wouldn't overlook the float level post though - I would think that could give you the same symptoms.

All vacuum ports are plugged.

I have a buddy who knows more about carbs than I do. Since I can't keep the engine running long enough to really observe it up close, I will have him come over and help me. He's a chevy guy, so I will have to bribe him with a few beers.

 

[TBP]

im not too familiar with clevelands, but could your vacuum leak be where the intake actually mounts to the heads like on a windsor? this is a common problem. also, are u using a carb spacer. i tried using the factory 4bbl spacer when i added a holley and edelbrock intake and even with all the right gaskets i had a major vacuum leak that caused symptoms just like yours. i ended up buying a plastic 1 inch spacer, and all problems were solved. just an idea

I am not using a carb spacer currently. I suppose I could stop and get one and give that a try. What exactly does a carb spacer do? What's it's purpose?

 

[A67StangMaster]

i had this happend to me too it was my battery that i needed to change it wasent sending enough kick to start it try a battery froma differnt car.

 

[TBP]

i had this happend to me too it was my battery that i needed to change it wasent sending enough kick to start it try a battery froma differnt car.

Brand new battery. Plus, if you read the later posts, it starts fine, it just won't stay running unless I keep feathering the gas pedal.