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
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
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.
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.
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!
