Hey gang --
So here's the short version. I'm supposed to be in Moab in a week. I need help identifying parts and some assistance based on diagrams of hooking up my vacuum system appropriately. I have/had a stock 1990 GW that I put a Howell TBI system on with a DUI electronic distributor/coil system. I got it running, but now its really really running terribly rough, doesn't want to idle all of a sudden, smells very rich, smoking white a little bit and wants to run a short time after you shut the key off. I don't believe I have the vacuum system set up correctly per what Howell has identified...but my stock intake doesn't have what matches any diagrams I can find online in 1990 jeep manuals. Hoping some of you can help me identify the ports and what they would be to. First off, here is the Howell Vacuum schematic they want me to use (I believe):
and here is a schematic I found for 1990 vacuum :
I need help identifying ports because mine don't seem to match. I'm obviously not the first owner and I haven't changed anything other than remove hoses, but haven't changed any valves or porting out of the intake manifold. I will try and give descriptions for these pictures and we'll label them #1, #2, etc.
So here's #1. Far back passenger side on intake manifold, directly next to valve cover. It has a hose connected to it that runs into the heater core area.
Here's #2 Its the slightly out of focused darker black one with a 90* bend that I have a hose on and plugged off with a bolt for now. It's back of the manifold, almost center (toward firewall side)
ALSO #3, we'll call the one in the foreground, bottom middle of the pic with a single line that goes up to one of those vacuum "spheres" on my firewall about the size of a softball.
#4 is directly behind the TBI / carb unit toward the firewall. It has two ports, one I have capped off, the other is running right now to a vacuum port on the front of my TBI unit (there is a good chance that this is NOT the way it should be hooked up...just for info)
#5 is a two port deal, both I have capped right now. This is directly in front of the TBI / carb unit towards the front of the waggy.
Finally, #6 is the yellow 3 port deal on the bottom left of the picture. The picture is a little skewed, but you can see the yellow plugs from both the #5 one in front of the TBI/carb unit and the yellow plug on the front of my TBI / carb unit itself to help show where it is relative to that.
I'm all about making simple and trying to make thing as fool proof as possible. I'm thinking about eliminating the cruise control function / vacuum portion as well...just to have one less thing to go wrong. But that's for another day.
What I really need is some help identifying what #1-6 ARE, and how and where I should be hooking them up...relative to the TBI Howell system diagram I suppose.
I have to get this thing running and behaving right...I need to start with identifying what these are and how to hook them up. I know things weren't right because awhile ago I have some blocked off and i created enough pressure in my crankcase to start blowing oil out the dipstick. It's not doing that now, but I NEED HELP!!! And I'm stressing and banging my head against the wall right now...I just don't know this 360 motor like I should. It's new to me and staring and these schematics isn't helping me right now.
Thanks SO much in advance for the help....REALLY appreciate and NEED HELP! CHEERS!!
M