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I have a Nissan 200SX 1985 that stalls whenever it feels. I can begin driving it and then it will stall and wont start up for about 30 seconds. Then after it stalls i can drive for 2 + hours. I have never drove more then 2 and half hours at the same time. As well I have driven it for an hour and it never stalled once. However after I turned it off and worked for 4 hours I went and got lunch and right after lunch it stalled again. I was told it could because of a dirty distributor but I cleaned that out. After I cleaned it out it worked good for a couple of days then began stalling again. Cleaned distributor again even though it wasnt too dirty and it stalled within 10 min of driving. Then the next hour was clean. Worked for a bit then began going home it stalled. Then worked for the next hour and didnt stall again.

I was wondering if anyone can help me out with what could be wrong with this car?????