My truck (1992 GMC Sierra) runs fine at times but then it will bog down like its loosing pressure or something. once it dies it turns over for a minute and then shoots out black smoke. This can take several tries before it will stay started and run ok.
Hello there:
the way you are describing it it is sounding like the fuel filter is started to clog and might need to be replaced.
you may also want to look into a tune up i.e spark plugs and wires and rotor cap and air filter ect ect ok?
best regards michael
Testimonial: "I have replaced the fuel filter a couple weeks ago so I will try the tune up! Thanks"
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