87 BII running rich,worse when warm

[04snake]

I have this 87 B2 manual running way rich.The problem is it will idle ok but rich, when accelerating it shoots massive amounts of black smoke like a diesel and cuts out, once it stops cutting out the black smoke quits.The problem is much worse when warm and it loses almost all power from running so rich.When driving at night in cooler temps the thing runs better but still rich, just not as bad,the heat seems to make the concern worse. I have checked the following:

TPS sensor at .9v and no dead spots when checking range,checked sig wire with sensor black wire ground, not battery ground.
IAC working and working well. Clean and operational.
Throttle Body clean and working well.
Coolant temp sensor for computer reading .5 volt when warm, swapped with known good one and still reading half volt, up around .8-1.0 volt when cold.
Timing at 10 degress with spout out, spout in advancing to 26-30 degrees advance.
Fuel pressure at 32 at idle and shooting to 40-42 when "goosing" throttle.
Map sensor seems to be ok, swapped with known good unit off of an '89 and no difference.
Firing order and spark plugs ok.
New distributor cap.
Fuel pressure regulator has no fuel or vapor in the vacuum line, unplug the vacuum line and it stumbles.
Vacuum at 15-18 inches idle and drops down to 5 or so when accelerating.

I have not checked the 02's because in theory the computer should not be reading them when cold, I may be wrong and I am open to advice or suggestions.Any other feedback is welcome, I can perform whatever checks I just do not know where else to go right now. Thank you!


edit: just rechecked the fuel pressure regulator with vacuum unplugged when hot and it still runs rich...should lean out but it isnt

 

[robertc1024]

You might check ground wires. Some other people have posted that there is an orange one that goes from the rear of the passenger side head to the firewall, when it's bad it can make your truck run rich.

 

[04snake]

awesome...I will check that out

 

[04snake]

checked and there is no wire hanging on the engine or firewall...i dont think it ever had one.

 

[robertc1024]

Hmm - I had a mega rich thing working, but it was my engine coolant temp sensor. I've posted it ad-nauseum, but it cured my ills. I got the resistance info from fordfuelinjection.com. But, in crusing the posts, and looking at my truck, the ground seems to be a common issue. Do you need pics? I can try to get you some tomorrow. I'm not sure why one ground can be so problematic, but it seems to be.

 

[RustedRanger]

Might check the fuel vapor canister and solenoid. Previous owner took my solenoid off and ran the vapor line right to the throttle body. Probably not your whole problem but it might be part of it. I also had a broken ground in the wires on the drivers side fender well and also a bad coil plug-in and weak coil and a FPR that failed when it felt like it. I fouled out the sparkplugs 3 times before finding all the stuff wrong.