I posted this under BII forum, lets see if I get a little more help here. I've got an 87 BII 2.9L, I just bought the truck about a month and a half ago. She ran great, had that lifter tap thing from time to time, but still ran good. Had to get the front seal changed out on the A4LD, and it ran good for a day. Driving home from the movies that night, the engine stalled on me when changing gears, and trying to accelerate. She made it home fine, I thought it was just a possible clogged fuel filter, nothing more. Well, the problem got worse, it'd run great when cold, but after she warmed up, it started stalling when I gave it gas. So I parked it, until I could change the filter. Changed one filter, the canister, didn't realize it had another in-line. But after I changed the one filter, I looked at the exhaust, it was blowing out black soot and black smoke, to rich. So I drove it to advance, after it cooled down and it would start, I forgot to mention, it wouldn't start back after it reached 160 or above, had to wait for a cool down. got to advance, to run the codes, the a**hole I bought the truck from cut the code check point out. So I tried to start it back up, of course it wouldn't. Sat till got cold, then still wouldn't start back. Shes trying to fire only when I give full throttle before turning the key. After that it just turns over with no burn. Need a little help here please, gonna change the other fuel filter out this weekend, but if its running rich, it shouldn't be that. Pressure regulator, or do you think its emissions?

 

well since you can't pull codes nevermind is your timing correct?,do you have fuel pressure,? first thing i do when you buy a used truck is do a tuneup, meaning change the distrubutor stator,rotor,cap,plugs and wires do the timing. change the filters
air,oil,fuel,change the pvc valve,thermostat,belt if worn out hoses too,battery cbales just to make sure.

if your getting black smoke your running rich might think of changed your o2 sensor ?

 

Its timed perfect, and I have fire at the plugs, haven't checked the fuel pressure yet. You think the O2 sensor would stop it from running at all? I've had bad O2 sensors on other vehicles, and it just got crappy mileage, not kill the motor. I changed all the plugs, wires, hoses, belts, filters, except for the one fuel filter ( I didn't expect two) Oil, and tranny filters are new. I inspected the distributor, and whomever had it before me put a new cap and rotor on shortly before I bought the truck, so I dont' think I have an issue there. Its definatley getting to much gas, or not enough air.

 

two fuel filter wierd
it either has the back or the front one but not both. very weird. i only the front one.which is the easiest to change. you said new cap and rotor right but how about the pickup/stator coil? was that changed when the truck get hot the coil stops working cuase the truck to not start or stall and you have to wait for about 10-20 minutes for the truck to cool down and even then you'll haver a hard time to start it

 

sorry about the spelling oops

 

I thought the two filters were weird, but on another forum, a few guys said they had the same thing, its just something they did a few months in 87. Um, the distributor is sound, and if you pull the wires off the plugs, I get a nice spark, so I don't think its the coil, but I'll check to make sure.

 

have your checked your IAC valve located right next to your tb front of engine left side. little round and long canister . remove it and clean it with carb cleaner just to make sure.

 

Now that I haven't checked, I'll do that one to. Oh, and just in case someone thinks about it, I did disconnect the fuel cut off switch to drain the system when I put the filter in, but I hooked it back up, drove it, and checked it again just to make sure.