If you're having problems with cold starting (engine won't start or runs rough when cold), the issue is *not* adjusting a choke, but rather one of these:
* Faulty automatic choke: This is the most likely culprit. The bimetallic spring might be broken or malfunctioning. Repair or replacement is usually necessary. This often involves replacing the entire carburetor or just the choke assembly (depending on your mechanical skills and parts availability).
* Dirty carburetor: A clogged carburetor will affect cold starting performance. Cleaning the carburetor is often necessary, and this is a more involved process.
* Fuel delivery problems: Check fuel filter, fuel pump, and fuel lines for obstructions or leaks. A weak fuel pump will also lead to poor cold starting.
* Ignition problems: Weak spark plugs, bad ignition wires, or a failing ignition coil can also prevent cold starts.
Instead of trying to "adjust" a nonexistent manual choke, you should troubleshoot these areas:
1. Check your fuel: Make sure you have enough gas and it's fresh.
2. Check your battery: A weak battery can prevent cranking and starting.
3. Inspect the air filter: A clogged air filter restricts airflow and will make starting difficult.
4. If you are relatively mechanically inclined, consider cleaning your carburetor: This is an advanced task requiring specialized tools and knowledge; consult a repair manual specific to your 1985 S-10 engine. Improper cleaning can cause further damage.
5. Consult a repair manual: A Haynes or Chilton manual for your specific year and engine will provide detailed information on diagnosing starting problems and carburetor repair.
6. Take it to a mechanic: If you're not comfortable working on your carburetor, a qualified mechanic can diagnose and fix the issue efficiently.
In short, there's nothing to adjust on the choke itself. The problem lies in the system's functionality, not a manual adjustment.
