91 360?

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mykdee

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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
 

Treburkulosis

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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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mykdee

mykdee

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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.

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

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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

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.
 

u2slow

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I had to change the idle-air-control widget for my '90 to run right
 

NorthStar1

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

reek

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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?
 
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mykdee

mykdee

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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?

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.
 
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mykdee

mykdee

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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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mykdee

mykdee

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Looking to pick it up tomorrow, any other ideas of parts I should bring to replace?
 

reek

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I think that probably should be a good start. anything else starts getting into some involved work/repair.
 
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mykdee

mykdee

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So I have seen a few forums saying that the 360 TBI does not have a IAC, is that correct?
 
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