Skip the auto shop - Our mechanics make house calls

Q: Carburetor backfiring and won't hold cold start.

asked by on

The carburetor is backfiring and won't hold a cold start fast idle. Other problems include carburetor leaking, wet throttle plates, bowl levels would drop overnight.

Hi. It sounds like you are having some carburetor problems. Im going to guess you have a Holley or a Edlebrock. They both have been known to have many problems. I finally decided to get rid of my Holleys and obtained a Dominator, I have been relieved ever since. Your problem sounds like the needle and seat may have something stuck in them causing them not to seal off correctly. As a result, your fuel bowls are flooding the carburetor with fuel. At the same time, your choke might not be set correctly and may be stuck closed causing further flooding. I would recommend having a certified technician inspect what is causing your carburetor malfunction. Also, if it has sat for a while, you may be better off having the carburetor replaced by a certified mechanic to eliminate any further problems with your vehicle.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Ran out of gas put gas in it but not getting to carburetor maybe it's the fuel filter

You should first try to replace the fuel filter and then with fuel line disconnected test to see if the fuel pump is pumping close to 5 psi of fuel pressure and is pumping fuel. When the vehicle ran out...

Q: Gauges work, but car doesn't start

Hello. If the car does not attempt to start, but the gauges will move, then it is indeed more than likely a battery. It sounds like there is just enough power to cycle the gauges. I would typically start by...

Q: 2005 Chevy Malibu, the best engine Chevy ever made.... NOT!!!

delete

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.