oxygen sensor

[atc]

my 86 buick gn seems not wanting to start during cooler weather, even sometimes during warmer weather. would this a sensor of some sort or something else. any suggestions welcome.

 

[whitehot1]

Instead of guessing I'll give you a link to a website where you can go through a troubleshooting, no start tree to help you determine what is causing the problem.

Here is the link.

Vortex Turbo Buick Performance