Q: 1985 Chevrolet Chevette hard to start when cold

asked by on

My car won't idle. And it's very hard to start when cold. I believe it has no fuel left in the carburetor after sitting overnight. Recently, it continued running after shutting it off and then banged a bit. I believe the electric choke, timing, or vacuum may be at fault. This engine is installed in a 1929 replicar that I have just put 11,500 miles on without any trouble. It has always been garaged.

Hello. It sounds like the carburetor is not closing completely. This could cause the poor idle, hard starting and "dieseling" you are experiencing. The 6510-C carburetor you have uses and electric choke, which could definitely be the problem. It also has a stepped speed control system (SSC) which consists of a vacuum operated actuator that opens the throttle. The problem could be in this system too. I am far from an expert on carburetors, since they were phased out by the time I started my career. However, YourMechanic does have carburetor experts on hand who are ready to help you inspect your vehicle’s hard-to-start condition.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. 1985 Chevrolet Chevette hard to start when cold

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: How can i find out my previous title owner info? To reach out to them

The procedure to title the car in the circumstance you have described varies by state. Vehicle ownership data (i.e., identity of owner), as held by the state, is generally confidential and will never be released without a Court Order. There...

Q: where does the 02 sensor plug in to a 1985 Olds. 98

Hi Wayne. Thanks for contacting us today. Back in 85, GM V6 motors only had one O2 sensor. It was considered an upstream sensor, which means that it was installed near the center of the exhaust manifold. Downstream sensors were...

Q: Luke warm heat from heater

This may be a thermostat issue where the thermostat is not closing at the right temperatures resulting in the coolant running continuously throughout the motor which does not allow the engine to reach normal operating temperature. As you may know,...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...