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Fordanswerman, Ford Motor Company Certified Tech
Category: Ford
Satisfied Customers: 3306
Experience:  Ford Engine Master/Transmission Master/Chassis Master=Ford Senior Master also Diesel 7.3/6.0
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87 ranger: smoke after it warms up and acts like the gas

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my 87 ranger blows out black smoke after it warms up and acts like the gas an air are not mixing right

Thanks for the question.


Is this a F150 or F250?


How many miles on the truck?


Have you tested for any codes in the computer? If yes what were the codes?



Customer: replied 6 years ago.
its a ford ranger, 1987 4X4 with 161,000 miles. well maintained. truck cuts out and blows black smoke from exhaust. has been to a local ford dealer who said to remove the catalytic converter, but still does same thing. no one in the area has a computer to hook to it this year.



1 thing comes to mind on this year.


1 excessive fuel pressure caused by a bad fuel pressure regulator. To verify, test the fuel pressure with a gauge. If the pressure is too high, it will cause these issues.


If you find the pressures to be too high, replace the regulator on the fuel rail and change the oil and filter because more than likely there is fuel in the oil.




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