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?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Carburetor backfiring and won't hold cold start.

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: I've got a P0507 code, what can I do?

Hi there. It sounds like the idle air control valve is stuck at the high idle position. The idle air control valve is located on the throttle body assembly and allows air to bypass the throttle plate to control the...

Q: I'm removing the motor but the input shaft is still in the motor instead of staying in the transmission what do I do?

Hi there. The input shaft is stuck in the pilot bearing on the engine or the back of the crankshaft. If the input shaft came completely off, then you will have to use a slide hammer to remove the input...

Q: What does it mean when my headlights won't come on?

Headlights are relatively simple circuits. You will want to check all components from the switch to the bulb. To perform these tests, you will need to have a voltmeter and understand how to use it. You will test for available...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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.