btmser opined in
>news: snipped-for-privacy@localhost.talkaboutautos.com:
>
>> I have a 91 ranger with a 2.3 4cyl engine that has an on going problem with
>> black smoke coming out of the exhaust. It only does it while driving, not
>> at idle. And it dont do it all the time. Also there are no engine codes. I
>> have replaced almost everything electrical even the computer. I have had it
>> to the local Ford dealer but no one seems to know anything. Is there anyone
>> out there who might have a clue?????
>>
>
>Are you sure it's black? or maybe bluish?
>
>Here's the first thing I would look for:
>
>Pull and look at all the plugs, the insulators tell you a lot. >
>Black or gray/sooty = rich
>greasy looking = oil use
>
>If it IS too rich on occasion but you dont get the check Engine light,
>there's a very good chance it's your Fuel pressure regulator acting up lmfao
many causes hack a proper teck would monitor fuel pressure injectors may be leaking
lmfao
backyard hack sez " why fix it rite the first time ?"
hurc ast