What should I do if a Porsche 914 idle is rich?

Answer by  lisa14 (20)

The idle is rich, that would mean that you have more fuel in your air to fuel ratio. If you have any sort of tuning device you should pull fuel through the injector duty cycle. Pulling fuel in the injector duty cycle will lean the air fuel ratio out creating the idle mixture.

Answer by  fishlover49 (643)

You can adjust the idle speed by locating the air by-pass screw on the throttle plate and turning it 1/4" increments until you have reached the ideal idle. Also make sure the valve isn't stuck either open or closed because that will greatly impact the idle speed.

Answer by  smartgirl (51)

What I would do is take it to the Porsche dealership. I would think that since it is a Porsche, you may be willing to pay the dealership to diagnosis the problem. Why would you want to work on something this expensive yourself, and risk making the situation worse.

Answer by  tab65 (456)

If the idle is rich it could be caused by a bad CO2 sensor or a bad throttle position sensor. If these sensors are working properly then the idle may need to be adjusted. The best way is to take it to a porsche dealership because they have all the right computer equiptment to make sure it's properly adjusted.

Answer by  Jdog37 (592)

If it is running to rich it is getting to much fuel. You will want to turn the screw in on the carb to lean it out a little bit so not as much fuel is getting in.