booster dripping
Thread Starter
Le Mans Master
Joined: Jun 2008
Posts: 5,284
Likes: 235
From: Rockledge FL
booster dripping
Just wanted to see if this makes sense.
At idle, I have a slight popping out of the right exhaust from my 72 454.
I was thinking that it might be a stuck valve so I checked the valves and none are stuck.
I did notice however that the right side primary booster is dripping almost in time with the popping. Its very slow, maybe once every 30 seconds. Idle is good at 600rpms. There is no smoke at all but there is a slight smell of gas and if you get that "too rich eye burning"
Would that slight drip cause the exhaust popping?
I was going to rebuild the carb but after checking the number on it, it is a carb from a 350. The numbers on it are 7042203. Where is a good spot to find a 7042116.
At idle, I have a slight popping out of the right exhaust from my 72 454.
I was thinking that it might be a stuck valve so I checked the valves and none are stuck.
I did notice however that the right side primary booster is dripping almost in time with the popping. Its very slow, maybe once every 30 seconds. Idle is good at 600rpms. There is no smoke at all but there is a slight smell of gas and if you get that "too rich eye burning"
Would that slight drip cause the exhaust popping?
I was going to rebuild the carb but after checking the number on it, it is a carb from a 350. The numbers on it are 7042203. Where is a good spot to find a 7042116.
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Popping is usually a sign of a lean condition. Most audible on deceleration like exiting a highway. If it's popping at idle you might have an air leak somewhere causing the lean condition.
You might pull and read your plugs...making sure to keep track of where they cam from.
Clean is Lean
Brown is Perfect
Black is Rich
You might pull and read your plugs...making sure to keep track of where they cam from.
Clean is Lean
Brown is Perfect
Black is Rich
Melting Slicks
Joined: Oct 2002
Posts: 2,317
Likes: 111
From: St Louis MO
If you have gas dripping from the booster, the fuel level in the float bowl is probably too high due to debris being stuck in the needle and seat. Pull it, clean it or replace it and set it correctly and your problem will probably go away.
Race Director
Joined: Apr 2000
Posts: 17,673
Likes: 199
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Common problem, it will go away after you blow it out, but it will come back again some day 
Thread Starter
Le Mans Master
Joined: Jun 2008
Posts: 5,284
Likes: 235
From: Rockledge FL
i do know that i have an exhaust leak.
that sound is obvious so maybe that combined with the drip is causing the popping.
i was going to pull the carb and rebuild it until i checked the number and saw it was calibrated for a 350.
Now i am just looking for a replacement carb and a new exhaust system.
that sound is obvious so maybe that combined with the drip is causing the popping.
i was going to pull the carb and rebuild it until i checked the number and saw it was calibrated for a 350.
Now i am just looking for a replacement carb and a new exhaust system.
