Another Carb question |
Post Reply |
Author | |
racingnc
Senior Member Joined: July-14-2010 Location: Mooresville NC Status: Offline Points: 170 |
Post Options
Thanks(0)
Posted: April-14-2014 at 7:21pm |
I recently rebuilt my 4150 carb works great until I shut the boat off. I noticed fuel flowing out of one of the main jets. My question is what might be the culprit.
|
|
SNobsessed
Grand Poobah Joined: October-21-2007 Location: IA Status: Offline Points: 7102 |
Post Options
Thanks(0)
|
A stuck float would be my guess.
|
|
“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin |
|
Waterdog
Grand Poobah Joined: April-27-2006 Location: United States Status: Offline Points: 2020 |
Post Options
Thanks(0)
|
+1 stuck primary float (you mean one of the front "barrels" looking down at it ???)
|
|
TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Online Points: 21171 |
Post Options
Thanks(0)
|
Stuck float is possible but it's more likely to be a bad needle/seat following a carb rebuild. Pretty common in new Holleys these days (both new carbs and rebuild kits). Hope you kept the old one!
|
|
backfoot100
Platinum Member Joined: January-03-2007 Location: United States Status: Offline Points: 1897 |
Post Options
Thanks(0)
|
Don't rule out the float being set too high. That's happened more than once here after a rebuild. Especially if you have a 1:1 tranny and no angled carb adapter.
|
|
When people run down to the lake to see what's making that noise, you've succeeded.
Eddie |
|
Waterdog
Grand Poobah Joined: April-27-2006 Location: United States Status: Offline Points: 2020 |
Post Options
Thanks(0)
|
Agree with everything. Check all WHEN you pull the bowl off.
|
|
cadunkle
Groupie Joined: August-17-2012 Location: NJ Status: Offline Points: 66 |
Post Options
Thanks(0)
|
Clean or replace needle and seat, reset float level... May just need to set a hair lower. Could also be heat soak, it will expand or boil the fuel and cause some dripping and ensuing flooded hard start condition. I used a thin (1/2" IIRC) phenolic spacer on mine to help isolate the carb from heat soak.
Also, extreme carb angle will cause flooding out the front bowls unless float level is set lower than normal. Angled spacer will help and many direct drives had these from the factory, sometimes discarded over the years. |
|
Post Reply | |
Tweet
|
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |