Will a cdi box keep quad from starting?

Yes, a bad CDI box can prevent a quad from starting. The CDI box is responsible for generating the spark that ignites the air/fuel mixture in the engine. If the CDI box is not functioning properly, the engine will not be able to start.

Here are some symptoms of a bad CDI box:

* The engine cranks but does not start.

* The engine stalls intermittently.

* The engine idles roughly.

* The engine hesitates or surges when accelerating.

* The engine has a loss of power.

If you are experiencing any of these symptoms, it is possible that your CDI box is bad. You should take your quad to a qualified mechanic to have it diagnosed and, if necessary, replaced.