My bird is really sick. First problem i had a eshaust leak before o2. Car over heated and all went bad. So when the car first over heated it had hard cold starts. Fixed the leak. Still have hard cold starts. After trying to start the car for about 5mins car will hold idle. Than run fine. No smoke good power ect. But i looked at my coolant resovier and its bubbling. So i my have a headgasket leak. But would like to fix the cold start first. Any help please. Car has been down for almost two months. And i miss try the bird.