News:

It appears that the upgrade forces a login and many, many of you have forgotten your passwords and didn't set up any reminders. Contact me directly through helpmelogin@dodgecharger.com and I'll help sort it out.

Main Menu

My Carter 4401 is mis-behaving....

Started by Dans 68, August 27, 2011, 10:06:32 PM

Previous topic - Next topic

Dans 68

The 383 4-bbl started idling rough, would die when the revs got too low out on the road, and would not easily start once shut off (not a hint of starting) but would start the next day. I started doing a bit of fault detecting and saw that I have a fuel leak (drip, drip, drip, etc., when shut-off) at one of the Carter carb 4401's shafts (see see shiny gas mark location in the photos). I'll figure this out, but if anyone knows off-hand if this leak (which is never good, I know) is causing the bad manners in my '68 please share. Thanks.  :cheers:

Dan
1973 SE 400 727  1 of 19,645                                        1968 383 4bbl 4spds  2 of 259

A383Wing

1) float level wrong?

2) needle & seat bad?

that's my 2 thoughts for the day

Chryco Psycho

looks to me like you need to replace the valley pan gasket with the fel pro 1214 gasket & block the heat cross over so the fuel doesn't boil inside the carb causing it to drip onto the throttle plates & leak out the side of the throttle shafts

A383Wing

I'm not having any carb issues with any of my big blocks...all are still using stock intake gasket with open exhaust crossover.

if fuel was "boiling", would it not turn to a gas and evaporate instead of still being liquid and run out one side of the carb shaft?

Chryco Psycho

no , it will actually boil the fuel in the carb & push liquid fuel into the venturis & sit on the throttle plates which will seep out along the throttle shaft . There really is no other way to have a fuel leak out the throttle shafts add to that the new fuel with more alcohol in them probably boil at lower temps .
Unless you drive your cars well below freezing there is no reason to have the heat under the carb , it is just a aid to stop carb icing in cold weather , now with fuel injection you never see heat in the intake , you may find you cars will restart easier when warm & make more power using the closed off intake gaskets

Challenger340

Maybe start it up dead nuts COLD, and see if it's leaking outa there ?

If it's dead nuts cold, and still dripping outa the throttle plates, chances are it's not "Boiling" the fuel ?
Only wimps wear Bowties !

A383Wing

it will not boil the fuel out of one side of the carb and then turn it back into liquid gas...changing the intake gasket will not help. And there is heat in fuel injection intakes and throttle bodies to stop freezing.

Chryco Psycho

if it happens cold I guess it wold be a bad needle & seat / float level problem obviously

Dans 68

Yes, it leaks cold, just spinning the engine for 10 to 20 seconds. The leak stops after a few minutes, but drips about one drop a second.  :scratchchin: I guess I have a carb teardown in my future.  ;) or  :o , time will tell.

Dan
1973 SE 400 727  1 of 19,645                                        1968 383 4bbl 4spds  2 of 259