Quote:
Originally Posted by zoulas
Yes a bulb. What difference would having the choke open or closed make, the choke only restricts air flow. It has no impact on gas. No ?
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Greetings, zoulas!
The choke does indeed have an impact on gas. The choke not only restricts air flow, it enriches the fuel to air ratio for engine cold starting. That is why older engines that are not equipped with modern fuel injection systems run rough and smoke black with the choke closed, or almost fully closed. Having the choke closed can have some very adverse effects on the engine itself if the engine is only run for a short period of time without being allowed to warm up to operating temperature, since the very rich fuel to air ratio will wash down the cylinders, and dilute the oil in the crank case. So, yes, the choke does have an impact on gas. Try driving your truck with the choke partially closed and watch your gas gauge plummet toward E very rapidly if you think that the choke has no effect on gas.