Lars question. How to set float level without a sight plug?
Thread Starter
Intermediate
Joined: Nov 2001
Posts: 35
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From: Colorado Springs CO
Lars question. How to set float level without a sight plug?
I have a Holley Avenger 4175 (Holley PN: 80555s) 650 CFM that does not have a sight plug to check the float level. I have looked on Holley's web site and there is nothing that speaks directly to that. All the instructions are for a sight plug. If this model does have a sight plug, please direct me to it.
Also, being in Colorado, which size jets should I be using on this model?
The reason for all the questions is that I am getting black residue out of my exhaust, which usually means it is running lean. It is also spitting fuel out of the top when shut off. I saw something about a phenolic heat spacer to correct this problem...any truth to this?
I have taken it in to the local Corvette Center here to have them take care of it, and it still does it.
Thanks in advance for any help. :cry
Also, being in Colorado, which size jets should I be using on this model?
The reason for all the questions is that I am getting black residue out of my exhaust, which usually means it is running lean. It is also spitting fuel out of the top when shut off. I saw something about a phenolic heat spacer to correct this problem...any truth to this?
I have taken it in to the local Corvette Center here to have them take care of it, and it still does it.
Thanks in advance for any help. :cry
Drifting
Joined: Oct 2001
Posts: 1,699
Likes: 1
From: Westampton NJ
Re: Lars question. How to set float level without a sight plug? (bryan78nCO)
Bryan,
To set it without a sight plug, the easiest thing is to do is to pull the bowl off. Then you turn it upside down, and the float top should be parallel (or close to it) to the top of the bowl (inside). That should get you in the ballpark.
If you're too lean, I'd suggest looking at the main jets as being too small...and a visit to Lars up in Denver is a good idea too...he loves tinkering. And he builds awesome fuel lines...I know, I have one. :yesnod:
Oh, and the Corvette Center is good for some things...but I'd stay away from their "tech" side. Just personal opinion, though. :smash:
See ya around sometime...mine's rather noticible when I'm out driving. :smash:
To set it without a sight plug, the easiest thing is to do is to pull the bowl off. Then you turn it upside down, and the float top should be parallel (or close to it) to the top of the bowl (inside). That should get you in the ballpark.
If you're too lean, I'd suggest looking at the main jets as being too small...and a visit to Lars up in Denver is a good idea too...he loves tinkering. And he builds awesome fuel lines...I know, I have one. :yesnod:
Oh, and the Corvette Center is good for some things...but I'd stay away from their "tech" side. Just personal opinion, though. :smash:
See ya around sometime...mine's rather noticible when I'm out driving. :smash:
Tech Contributor
Joined: Aug 1999
Posts: 14,376
Likes: 6,375
From: At my Bar drinking and wrenching in Lafayette Colorado
Re: Lars question. How to set float level without a sight plug? (bryan78nCO)
Bryan -
Rainman has the right technique - you pull the bowl, flip it upside-down, and set the float to parallel and level. On the Holley, it can produce similar symptoms when running either rich or lean. I can send you a copy of my Holley carb tuning paper if you'd like to do a little tinkering with it, or stop on up to the house, and we'll play with it a bit.
Rainman has the right technique - you pull the bowl, flip it upside-down, and set the float to parallel and level. On the Holley, it can produce similar symptoms when running either rich or lean. I can send you a copy of my Holley carb tuning paper if you'd like to do a little tinkering with it, or stop on up to the house, and we'll play with it a bit.
Thread Starter
Intermediate
Joined: Nov 2001
Posts: 35
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From: Colorado Springs CO
Re: Lars question. How to set float level without a sight plug? (lars)
Okay. I will try removing the float bowl. Thanks Rainman
Thanks Lars.
Your Holley carb tuning paper, is that the one that is on the Tech Tips area of the forum? If not, yes, I would love a copy of it.
I am planning on making a trip up to visit you, but probably not until they clean up all the sand that they put down on the roads. I have wanted to pay you a visit for quite a while now. Hopefully soon.
Thanks Lars.
Your Holley carb tuning paper, is that the one that is on the Tech Tips area of the forum? If not, yes, I would love a copy of it.
I am planning on making a trip up to visit you, but probably not until they clean up all the sand that they put down on the roads. I have wanted to pay you a visit for quite a while now. Hopefully soon.
