My Toyota Camry 2000 has been having ignition issue for a couple of weeks now, I have to start it up to 5 times in the morning before it will start. What is the solution to this issue. My speedometer is on 120,000 km

 

You try to start the engine 5 times before it actual starts?

 

Yes, it has been like that for few weeks. I need suggestions on what might have gone wrong and the best possible way to resolve it. Thanks

 

Engine type as in 4-cylinder or V-6?

How does the engine run after starting including at idle?

Once the engine does start in the morning, does it easily start up for the rest of they day?

 

It is a 4 cylinder 5s engine, it runs normal when it eventually start, and no noticable defect in the exhaust tail except the funny smell. After I scanned the engine with my OBD 2 the three code gotten are 0171, 1130 and 1135, all is pointing out to bad oxygen sensor. I have ordered for o2 sensor but it may not have anything to do with my hard start.
After the morning hard start, it start normal and runs normal through out the day