need help blue smoke

[sicrx]

Sup guys i just bought a 91 nissan 240sx bone stock with a ka24 dohc automatic transmission. I recently did the oil change spark plugs and filter bcuz my car threw out blue smoke wen i bought it but , after i did the tune up it didnt throw smoke for about a week . Evry time i take off it blows bue smoke but when i drive after take off it stops . Any suggestions?

Note: I checked the head gasket and its not leaking.