Mmattthews

This is my problem I just bought this car and the person i bought it from changed it from a fuel injected to a Carburetor and now we ( my fiance and I) are having problems with her running correctly...we dropped the tank cause we thought there was a chance of blockage and there wasn't but in the process we found out we had rotted hoses and now that we have reinstalled the gas tank and got the new hoses connected we have hit another bump with the car...we believe the fuel filter is bad BUT the fuel filter is a fuel filter for a fuel injected pump...what can we do to get her to running like she should? Also She has a Edelbrock Carburetor and the engine is a 305...( The owner before me wanted to turn her into a PURE muscle car)

hwcoll95

iTrader: (6)

sure you have fuel pressure?,need more info as to originally what it was ..year,motor,etc.. fuel pump in tank ,got power?

Mmattthews

1990 Chevy Camaro RS, yes we have fuel pressure...when we unhooked the hose to the pump the fuel would pump through...Fuel pump is not in the tank..the owner before me mounted the fuel pump on the motor...yes has power

Mmattthews

My Fiance knows more about the car than I do atm...He is the one that has been doing all the work

Spike_Akers

what is it doing?? is it like its running out of fuel at the filter? im assuming thats whats wrong since you stated you thought the filter was bad and that there was junk in the tank.. if this is the case the problem may be vapor lock.. what this means is that as the engine warms up it causes the fuel (whether it be in the bowls, fuel line, or pump) to vaporize and keep the fuel from flowing.. theres alot of possibilities on how to fix this, could use a small spacer under the carb but first check that none of the lines are running somewhere they could be getting hot, and insulate them with some type of heat reflective tape (ive even seen people use tin foil).. hope this helped!

aremy10

iTrader: (3)

ive been having the same problem lately, i get it to run but not smooth like it should, almost runs like the timing is off.

to solve-- took off the edlebrock i had on it and put a holley on it, problem gone!!!
strange cause i never had a problem with edle carbs before, i cleaned it and adjusted the floats, i did everything, and still the edlebrock wouldnt run rite, i put a holley on it that sat for 9 yrs and it runs like a champ, with no cleaning or rebuilding, nothing,

Mmattthews

She acts like she isnt getting enough fuel..from the filter and also the car at one point was a fuel injected car and was turned into a Carburetored car..So what i am wondering is with a fuel injected fuel filter effect the amount of gas she will get?...The Carburetor gets gas but not enough is that the possible problem?

five7kid

iTrader: (14)

The "fine" fuel filter should be after the pump. Before the pump should only be a strainer (which should be in the tank).

Spike_Akers

im running my carb through a FI filter so that shouldnt be a problem... have you tried tuning the carb? it could be running SUPER lean. is it always as if its not getting enough fuel? or is it at certain rpms? if its at idle i would say your floats need adjusting.

camaronewbie

YOu also need to check and correct the timing - carbed cars need alot more base timing than computer cars (since there's no computer controlling the timing anymore).

Speaking of which - has the distributor been replaced with a standard vacuum-advanced distributor?

There's alot to be considered when swapping to carb - can't simply slap one on there - many changes have to be made for it to run correctly.

aremy10

iTrader: (3)

start with--






mine was once muti port inj v6. now a 77 350. took alot of changin stuff around, wiring, took out fuel pump, motor mounts, run new lines for fuel, water, vac, etc. etc etc. a lot of stuff to change, and lots of wiring!

Mmattthews

ok we changed the fuel filter and we cranked her up yesterday and she ran for 20 minutes just idelling then went dead lol the alternator went out we got that replaced and the distributor was replaced as I have said the person i bought this car from was tryin to turn her into a pure muscle car..we have hit another bumb regarding the car getting fuel and we are stuck on this one...we have tried this we moved the fuel pump to the fire wall and we are hoping that will work...I have been told to check the carb to make sure the float isnt stuck ( My mother knows alot about carbs lol) She also suggested alot of other things that we will have to do tomorrow and I also know that the 305 was rebuilt some parts are the original parts for the car but some are brand new and were put onto the car with the carb

Mmattthews

Ok We just put a new fuel pump on the car and she isnt getting enough pressure to pump the gas we checked all the lines and there is no air coming through..any idea's or suggestions?

camaronewbie

OK - I'm confused a bit ...

1) Is there an electric stock fuel pump in the gas tank? If so, it has to be running or removed - can't pull gas through a non-working fuel pump

2) Is there an electric fuel pump outside of the tank?

3) You mentioned moving fuel pump to firewall - I assume this is an external electric fuel pump - pumps push better than pull, needs to be as close to the tank as possible

4) you mentioned a fuel pump "on the motor" - is there a mechanical pump on the engine block?

5) Is there any kind of fuel pressure regulator anywhere in the system? If so, exactly what kind?

Mmattthews

ok the person who owned it before me mounted the fuel pump on the motor of the car this is a electric fuel pump we moved it at first we moved it to the fire wall it is now located under the car near the gas tank...the inline fuel pump that MOST cars come with that goes into the gas tank was removed when the previous owner turned the car into a carburated car Im sorry if i confused you...actually this car is starting to **** me off excuse my french...but anyways all the problems we are having are fuel problems we have dropped the tank checked for blockage, put a new fuel filter, fuel pump and after we put the new fuel filter on it she ran for a good 20 to 25 minutes ( my fiance is talking about going through and removing all the fuel lines that could be bad) Im running out of ideas none of the problems we have had are related to the Carb. the carb is good..I hope I did better at explaining this than the other times and looking back at them i can see how any one could get confused by what i said..but as i stated the car was originally a fuel injected car and is now a carburated car ( I also do not know much about the history behind the car)

Spike_Akers

i would highly, highly recommend trying a mechanical pump... i had nothing but problems with my electric pump when i swapped to carb.. also.. with an electric pump you should be running a pressure regulator.... i honestly think going to a mechanical pump or using a regulator will at least help with your issues.. i do believe that edelbrock carbs only require about 6.5psi... where as i believe (someone correct me if im wrong) FI car ran at 11-13 psi if i remember correctly.. now all this extra pressure from your electric pump will cause your bowls to flood... this can definately cause a rough idle, and for the engine to flood and die.. this was one of my problems when i swapped to a carb... your mother was right on with the idea that the float was stuck.. because that would cause the same problem...

Mmattthews

What signs should i look for if the float was stuck? and we have switched to a pump that is for carb vehicle's

Seven_MPG

Put a mechanical fuel pump on the engine.It sounds like your having issues with an electric pump.Get a regutator and try to run 5 psi,If it won't run that your problem lies elswhere.I bought a '95 silverado short bed with a 400 swap and the engine would not run.The fuel pump was on a toggle switch and there was no regulator.I switched to a mech fuel pump and it ran like a champ..It turned out I had a 350hp+ engine.Their loss my gain.

Spike_Akers

I have a feeling its not the float being stuck, but an un regulated electric pump.. which causes similar problems... and the problems would be a lot like what you're having... the pump Is flooding the bowls and pouring gas into the engine causing it to run rough and shortly after die, if its bad enough you can smell gas...