sick 440 / Edelbrock 750

[tpodwdog]

hi guys....the belvy developed another small problem. heres what its doing:

start it up...starts great
go on my merry way
come to a stop....it dies
does NOT want to start until i let it cool a bit

it has a Edelbrock 1411 750 cfm carb on it brand new. it feels like it is flooding. as long as im crusing along its fine....when i stop...it dies....and dont want to start easily. when i get it fired back up....tons of whitish smoke and the smell of raw gas in the air....and will do this all over again.

i have considered vapor lock, or needle and seat...BUT ITS BRAND NEW ! but i have never owned an Edelbrock carb b4....had all Holleys. are these carbs junk? it just started doing this the other day and has progressively gotten worse....and this carb was on it when i bought it ! any thoughts ???:headbang:

another thing.... heres how the fuel lines run....something tells me this isnt correct..

from the fuel tank to an electric fuel pump mounted close to the gas tank.
goes FROM ELECTRIC PUMP into the MECHANICAL fuel pump on the engine.
goes from the mechanical fuel pump to the carb...( theres a see-thru filter before the carb )
i have never seen this arrangement before
shouldnt it either come from the electric pump or the mechanical one?????? NOT BOTH ????

 

[MarPar]

fuel atomizing in the fuel line?? how close is it to a heat source?? what's timing @?? carb too rich???

 

[mopar367]

I don't think you should have two fuel pumps like that. It might be causing excessive pressure and flooding the engine. Maybe look into a fuel pressure gauge. Sounds like a stuck needle and seat maybe too. A piece of dirt could cause a stuck needle and seat even though its brand new. Just my 2 cents

 

[wannadrag]

For starters i would lose that electric pump and those 750 eddy carbs had some issues when new but not sure if they are still troublesome or not.

 

[Ron 73]

The glass filter (IF) you should get rid of now, its a fire accident waiting to happen..Seen pictures of what happens if they break and gas runs on hot headers.. You can get plastic see thru's that are safer to run..

 

[Pops1967GTX]

Make sure you have fuel available at the carb.. check idle circut and turn up the idle a bit. also could be running lean..check idle mixture ....you might have debris in the idle feed restrictors......

Make sure your rule out ignition cutting off when hot....
Hot soak...phenolic carb spacer, make sure the fuel line is routed away from high heat areas...

http://www.mymopar.com/downloads/carterafbtuning.pdf

http://www.thecarburetorshop.com/Troubleshooting.htm

 

[Red63440]

The glass filter (IF) you should get rid of now, its a fire accident waiting to happen..Seen pictures of what happens if they break and gas runs on hot headers.. You can get plastic see thru's that are safer to run..

"from the fuel tank to an electric fuel pump mounted close to the gas tank.
goes FROM ELECTRIC PUMP into the MECHANICAL fuel pump on the engine.
goes from the mechanical fuel pump to the carb...( theres a see-thru filter before the carb )
i have never seen this arrangement before
shouldnt it either come from the electric pump or the mechanical one?????? NOT BOTH ????"

No mention for glass, just see through:toothy5:

 

[Ron 73]

"from the fuel tank to an electric fuel pump mounted close to the gas tank.
goes FROM ELECTRIC PUMP into the MECHANICAL fuel pump on the engine.
goes from the mechanical fuel pump to the carb...( theres a see-thru filter before the carb )
i have never seen this arrangement before
shouldnt it either come from the electric pump or the mechanical one?????? NOT BOTH ????"

No mention for glass, just see through:toothy5:

That would be the (if) Just being clear, no pun intended.:grin:

 

[tpodwdog]

That would be the (if) Just being clear, no pun intended.:grin:

this just in........... the filter is plastic Ron...not glass. ...and i just tore apart that Eddy carb....checked needle and seat....all clean.....( there are 2 )
when i took off the carb....THERE WAS A SEA OF GAS SITTING IN THE INTAKE...so its DEFINITELY flooding. im not much of a carb dude......but i was right as in it was flooding.

put it back together....threw it on the car....AND ITS STILL FLOODING.

im getting a Holley 750....screw it !:headbang:

***FOR SALE*** ...Edelbrock 1411 750 cfm carb... BRAND NEW... maybe you can fix it,,,,lol

thanx for all the input guys! i do appreciate it!:headbang:

 

[tpodwdog]

For starters i would lose that electric pump and those 750 eddy carbs had some issues when new but not sure if they are still troublesome or not.

i have every intention on losing the elect. fuel pump.. was waiting on dropping the tank and throwin in a new one and do it all at once...its noisy and annoying. i heard these carbs were junk....now i know for sure! thanx dude!

 

[lewtot184]

there's nothing wrong with an electric pump from the tank to a mechanical pump. what may be happening is too much pressure or fuel boiling in the carb. some of those edelbrocks don't like over 6lbs pressure. check your fuel pressure ratings on the pumps or just do a fuel pressure check before you dump a bunch of money in another carb.

 

[Budnicks]

wise move

im getting a Holley 750....screw it !:headbang:

***FOR SALE*** ...Edelbrock 1411 750 cfm carb... BRAND NEW POS... maybe you can fix it,,,,lol

thanx for all the input guys! i do appreciate it!:headbang:

That is the best advice, I've seen yet, the Edelbrock company has some great products, the Edelbrock Performer/Carter AFB & AVS knock off Carburetors, weren't one of the better ones... I've use them on multi-carb application with decent success, after many improvenents/changes......... I-M-H-O anyway, most everyone that has one has had issues, you can go to the Edelbrock site, there are a ton of common fixes for them, if you choose to keep it anyway... I persoanlly like the Holley style carburetor idea myself... Quickfuel, Promaxx, Profrom, Holley HP or even a Demon all good products...

 

[Budnicks]

i have every intention on losing the elect. fuel pump.. was waiting on dropping the tank and throwin in a new one and do it all at once...its noisy and annoying. i heard these carbs were junk....now i know for sure! thanx dude!

That should have been your 1st clue... Sorry

 

[tpodwdog]

there's nothing wrong with an electric pump from the tank to a mechanical pump. what may be happening is too much pressure or fuel boiling in the carb. some of those edelbrocks don't like over 6lbs pressure. check your fuel pressure ratings on the pumps or just do a fuel pressure check before you dump a bunch of money in another carb.

what is the point of having the elect pump going into the mech pump? back up device?

the engine was cold when i threw the carb back on...so there was no time for the fuel to boil,,,,it flooded out immediately. this just started doing this the other day....im baffled, because i put over 250 miles on it since i bought it til it started acting retarded just recently.

 

[tpodwdog]

That should have been your 1st clue... Sorry

yeah Budnicks,,,but this carb came with the car that ive only had for 3 1/2 weeks now. i dont think im interested in trying to fix it. ill just get a Holley and be done with it. i dont want constant problems with it. my road Runner has a holley on it and its great....fast idles nice.....good performance fires right up EVERYTIME. im not 19 any more and have the desire to F*&k with things like i used to !...lol:headbang:

is 750 too much carb for a 440 with a Hemi cam....or not enough ? im not sure whats on the runner....its just a stock 383 .

 

[Budnicks]

750 Holley is probably just fine... If you plan on racing it may be able to use a little bigger carb, but for a cruiser & street/strip use it's probably just fine......... A good rule of thumb is 2-cfm per/CI, 440 @ 0.030" over is 446ci x 2cfm = 892cfm for optimum fuel & air flow, but generally you will only ever need about 80% of that = 713.6cfm, unless your wide open throttle allot & have a hot ignition to burn all the fuel... The electric pump may have been used as a band-aid to prime the mechanical pump because hard to start issues, caused by fuel bleeding of overnight or after a short period of time... Check your lines for being semi clogged, the fuel filter, sending unit pick-up & sock, also may be picking up debris causing issues , very common in old cars fuel tank rust & corrosion issues on 40+ y/o cars, fuel additive & condensation/moister issues over the many years... I would also suggest buying a K&N air filter & install a cleanable type fuel filter before the carburetor, that you can inspect from time to time...

 

[tpodwdog]

750 Holley is probably just fine... If you plan on racing it may be able to use a little bigger carb, but for a cruiser & street/strip use it's probably just fine......... A good rule of thumb is 2-cfm per/CI, 440 @ 0.030" over is 446ci x 2cfm = 892cfm for optimum fuel & air flow, but generally you will only ever need about 80% of that = 713.6cfm, unless your wide open throttle allot & have a hot ignition to burn all the fuel... The electric pump may have been used as a band-aid to prime the mechanical pump because hard to start issues, caused by fuel bleeding of overnight or after a short period of time... Check your lines for being semi clogged, the fuel filter, sending unit pick-up & sock, also may be picking up debris causing issues , very common in old cars fuel tank rust & corrosion issues on 40+ y/o cars, fuel additive & condensation/moister issues over the many years... I would also suggest buying a K&N air filter & install a cleanable type fuel filter before the carburetor, that you can inspect from time to time...

thanx dude....i wont be racing it,,,those days are long gone...just cruising it around and blowing the doors off of every Camaro (vomit) i encounter....thats always fun!.....so 750 it is. ill start looking now for a new carb. its just odd that this just started acting up recently....im a pretty smart dude but this one has me BAFFLED!:blob1: im pretty weird when it comes to having things " just right" (o.c.d disorder....lol ) so i will eventually be putting a new tank in the Belvy...along with new sock and the works....and getting rid of that noisy pain in my *** electric fuel pump. it will all be taken care of soon. im not one to procrastinate much. my paypal acct is wiped out so ill be selling more bass giutars for the Belvy fund..( i have 24 of them and only 2 hands.... whats the point ?)

 

[Budnicks]

It may not be the carb at all, it still could be completely something else... Maybe...LOL.... Sorry

 

[bigmanjbmopar]

Eddy carbs will handle up to 10 psi they say keep them at 6. Stock mech pump will be around 5-8 fluctuating from cam and rod. If your eddy is floodung you either have too big of primary jets or ykyr timing does not match your air mix. Eddy carbs are good reliable street carbs. And typicly take very lite adjustment. Also check you thrortle linkage to make sure you not going wide open at 1/4 throttle. Also most avs eddys can take dual feed lines this would also help if jets are too big and or idle circuit is too rich. Save a ton wirh simpme stuff unless you just have ro have a holley. Hopefully they have fixed the power valve thing those used to all ways blow out on me usually right in the middle of a race or showing off too lol.

 

[tpodwdog]

well....common sense is telling me that when i removed the carb and there was an ocean of gas laying in the intake manifold....its flooding. i never really had a car flood due to improper timing.... but i guess anything is possible.

when i bought the car.... i did notice it idled rich....eye burning rich. but when i drove it today......it cruised wonderfully....it just wont idle and thats when id died. actually it died approaching the stop . i had it out last week and it died on me about 4 times....then it would level out and be ok.....then it would die upon a stop.......and thats when idling occurs....at a stop,,,,.....but it would just die instead.

this progressively got worse until today when i lost total trust in it. once i got it home...i pondered on what i may have done to provoke this....i didnt do anything out of the ordinary.....altho i did put a new cap and a new rotor in the dizzy ( yes i double checked firing order...1-8-4-3-6-5-7-2 ).....which would not cause it to run erratically . after pondering and thinking about the symptoms......i came to the conclusion that it had to be flooding....and thats when i removed the carb and found the ocean of fuel laying in the intake. there was so much fuel that i had to sopp it up with a shop rag . it has to be a flooding carb. as stated before,,,i removed the top to expose the floats and needle and seat... all looked good and no dirt to be found. im no carburetor guru.. but the idle adjusting screws regulate the air / fuel at idle only. im not sure what the metering rods do....but i do know the jets regulate fuel at cruising,,,, right?

i dont have any faith in this carb....and im not hellbent on a Holley.....i want something reliable and the Holley on my road runner is exactly that ....RELIABLE ! when i had the Eddy apart, i checked for leaking seat valve. i let the floats hang down and blew into the inlet....it was open....i then held the floats up shutting the valves and blew thru it....no air...and thats telling me the needle and seats are working....BUT WHY IS THERE A SEA OF GAS IN THE INTAKE????....baffling !

im not going to swap carbs from the road runner and try it on the Belvy if thats what youre thinking. no real point in it....for 350 dollars i can put a good known reliable carb on it and problem solved. unless im missing something or overlooking something....everything is pointing to a flooding carburetor but you guys have done alot more of this stuff than i have in the past 30 years and im glad youre here to bounce ideas off of and for that i am forever thankful and grateful....you guys really are the bestestest !!