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Edelbrock Carb help needed

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alfreema:
Whoa, I have the same symptom with my Holley 4bbl.   If it sits several days I can't start it without starting fluid/gas.   But once it's running it runs great, and it will start right away if you start it every few days.  I'll definitely be watching this thread to learn how to diagnose the issue.

JohnnyPopper:
Sounds like a weak or failing fuel pump.

zieg85:

--- Quote from: JohnnyPopper on September 12, 2024, 04:04:57 AM ---Sounds like a weak or failing fuel pump.

--- End quote ---
Fuel pump is new, fuel filter is full.  My 67 is about to go into storage soon anyway.  Thanks for the reply JP

78 Chevyrado:
How long did it set between uses?  I have a 1406 on my 78.  If it sits more than 8 or 9 days its hard to start because all the gas has evaporated out of the bowls.  I have an open type air filter.  That lets it evaporate faster.

Could be an accelerator pump, but if all the gas has evaporated out of it the pump wont pump anything...

What is the time period between trys to start it?


If it starts today but not tomorrow..  theres a leak somewhere.  if it starts today but not in a week, maybe a bad fuel pump letting the fuel run backwards back into the tank.

My 78 always had fuel pump problems, every 6 months.  I always bought the store brand fuel pumps for $20 to fix it.  it would work great for 6-8 months.  turns out it was cheap fuel pumps.  I bought an Edelbrock #1721 fuel pump for oh about $140 or so 6 years ago...  I know people say my stock 350 doesnt need that and I agree. ECEXPT..  that pump has been good for the last 6 years.  no failures.  My stock 78 engine has a bunch of hotrod parts on it.  not because i think they are cool.  but because I got tired of buying and replacing the cheap parts every year.  the edelbrock pump has worked out for my beautifully.  the normal $25-$55 pumps are all cheap garbage.  buy the Edelbrock and be done with it. 

That I will spend on necessary extra on parts like that is why my truck is so reliable.  you can buy one edelbrock pump for $160 and be done with it or you can buy a $25 pump every 8 or 9 months.  I figured out I need my truck to work when I need it not when it feels like it.


78 Chevyrado:
The stocker type pumps the diaphragm would fail and let all the fuel from the carb be sucked back into the tank.  couldn't let the truck set for more than 4 days and it would be hard to start for lack of fuel.  after the edelbrock upgrade it goes two weeks plus before lack of gas is a problem.

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