My 1982 honda xr 200 starts up but once it is warm, it runs rough

Hi,when starting bike you put the chock on,remeber this is to make a richer mixture for cold start,so when you start the bike put put the choke off a little bit as it warms up,other wise wat you are doing is couseing it to floud,so again as the bike warms up put the choke off little bit at a time,all the best.

sounds like auto matic choke problem try a manual choke

If you have a carb its chock .If injection its fuel related filters regulator restrictions if fuel flow ect.

Buick 97 lesabre, runs rough when warm

check the engine coolant temp sensor under the distibutor. they can go bad and cause longer starting times and rough running until the car warms up.

sound like the engine might be worn out do a compression test

Make sure you were given the right plugs for the car (correct heat range) also check the choke plate after the car warms up to ensure the choke plate is all the way open.

Make sure all the glow plugs are working.

id say its time for a new set of piston rings sounds like youv got a busted oil ring