I have a 1986 toyota truck 4x4 it hard to star and when it does a lot of black smog comes out until it warms up
Running too rich or the choke is stuck. Injection or carburetor?
I am going to call out the heat riser spring as being troubled~ https://www.google.com/search? q=heat+riser+spring+86+toyota&biw=1164&bih=580&tbm=isch&tbo= u&source=univ&sa=X&ved=0ahUKEwim6p6Ho6TSAhXJ7IMKHTdnB sIQsAQIKA
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