so what do u think of my carb

[corey796]

im posting pic's of my carb 4b holley because

i was just wondering why my primary butterfly's are so clean and the secondary's are dirty i was getting realy bad gas millage so i decide to try my hand at rebuilding my first carb i think i will be ok on that just wanted to see if any one could tell me any thing about it being clean on the primary's thanks




ok th pic's are 2mb each i cant upload but like i said the primary's or the side to the front of the car that the fuel line is closer to is the side that is so clean like out of the box clean

 

[Rusty67]

Get a photobucket account.

 

[corey796]

Get a photobucket account.

ok like i said i did not clean the butterfly's that are clean in the pic just wanted to know if that is normal

carb bottom picture by corey796 - Photobucket

 

[TOM B]

That is normal for a engine that has some valve leaks or a large overlap cam.
What you see is the primary is washed by fuel all the time and the secondary is closed most of the time and you will get this black soot

 

[corey796]

thanks for a answer man

 

[brianj5600]

Corey's picture.

 

[D.Hearne]

The clean butterflys are the secondaries. The primary's have gunk build up from poor quality fuel. Run Chevron, Texaco or Shell gas with Techron and they'll stay clean.