02 jetta with 2.0 in it gas motor smoking bad when I reach 70 mph. Back off of it to 60 mph and it goes away and runs fine no smoke. What is it?
most likely a exhaust or oil leak. The smoke is probly from oil running off onto the exaust manifold. Check for wet spots also check out all your radiator hoses. these jettas tend to have the 4 split connections burst and i would recomend changing it if you have not already.
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