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91 360?

Discussion in 'Engine & Performance' started by mykdee, Apr 6, 2021 at 12:04 PM.

Sponsored By: Moe's Performance
  1. mykdee

    mykdee Junior Member

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    Location:
    Litchfield Park, AZ
    Ram Year:
    1991
    Engine:
    360
    So I’m about to go pick up a 1991W 250 with the 360 in it. When I first looked at it it ran great and I went to look at I t again today and it is now idling bad (like it is misfiring) and there is black smoke coming from the exhaust!
    Should I be worried now? Hopefully I can hear back from you guys soon wanting to pull the trigger on this in the next day. Thanks
     
  2. Treburkulosis

    Treburkulosis Senior Member

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    Black smoke usually means running rich. It could be as simple as a bad fuel injectors, bad fuel pressure regulator, or even a faulty air filter. I have seen 02 sensors cause issues like that as well. As long as its not white or blue white smoke. I wouldn't think that it would be a hard fix. They were pretty simple designs.
     
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  3. mykdee

    mykdee Junior Member

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    Ram Year:
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    360
    Exactly the kind of response I was hoping for! I kind of had an idea that it was running rich, just didn’t wanna get myself in a position and purchase something that was severe. Thanks again
     
    Treburkulosis likes this.
  4. Treburkulosis

    Treburkulosis Senior Member

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    It doesn't necessarily fall into just an older vehicle. From time to time if my Charger sits for a a week or so, when I start it up, it poofs out a big cloud of dark grey/black smoke.
     
  5. u2slow

    u2slow Member

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    BC, Canada
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    Engine:
    Cummins 6BTA
    I had to change the idle-air-control widget for my '90 to run right
     
  6. NorthStar1

    NorthStar1 Senior Member

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    Lord I miss that engine!!! Give me a 318 and a 360 all day long!!!!!!!!!!!
     
  7. reek

    reek Senior Member

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    Engine:
    6.4 Hemi
    how many miles on this one? hopefully it is a simple as an air/fuel issue. worst case, these mopar small blocks are so easy to rebuild (after you get the block back from the machine shop). so will this be a second truck or parts truck?
     
  8. mykdee

    mykdee Junior Member

    Age:
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    Location:
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    Ram Year:
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    It has 90k on it and ran great when I first looked at it 2 weeks ago. Yes it will be my 2nd weekend vehicle.
     
    reek likes this.
  9. mykdee

    mykdee Junior Member

    Age:
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    Location:
    Litchfield Park, AZ
    Ram Year:
    1991
    Engine:
    360
    So I am planning on picking up a IAC, fuel pressure regulator, O2 sensor and air filter. Anything else I should pick up? Looking to go work on it tomorrow!
     

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