307 tune up questions

[WIKD CUT]

Well, the 307 in my 87 Cutlass hasn't been running the greatest for some time now. It had been running really rich for a while now, chugging black smoke from takeoff and getting horrible gas mileage. Rebuilt the carb and discovered that the TPS was broken. Couldn't find the part anywhere around here so just put it back together with some super glue because I wanted to drive it to a cruise last friday. When I hooked everything back up and started it up, it ran great for about 1 min. No black smoke when I revved it up. All of a sudden it started idling rough and eventually died. I started it back up and it immediately started running rough again and died. The only way I could get it to stay running was to keep the rpms up until it fully warmed up. After it warmed up it would idle but extremely rough. Sounds like my engine is cammed up. I drove the car to the cruise and on the road it drove fine. My secondaries won't open though. Have a tps on the way and I'll see if that corrects the problems. I've heard that you have to adjust the voltage on the tps with a special tool??? If so, where can I find this tool and what are the voltage specs???

Secondly, I just wanted to give the ole 307 a basic tune up. What recommendations can you guys give me for a tune up? I'm thinking:

1.New air cleaner
2. New plugs and wires
3. Adjust the timing (anyone have factory specs?)
4. New distributor cap?

Any other suggestions you can give me would be greatly appreciated.

 

[captain-FN]

20 degrees i do believe. and you may as well do them all as for the tps not to sure might have to get another one

 

[2fit661ca]

based on first hand expierience of rebuilding a 307, I say scrap the piece of junk 307 and put a Chevy in her until you can afford to build a REAL olds motor.

 

[86Olds442]

20 degrees i do believe. and you may as well do them all as for the tps not to sure might have to get another one

Yes, timing 20 degrees, 1100 RPM C3 terminal on the computer block grounded.

 

[joe_padavano]

When you rebuilt the carb, did you follow the exact adjustment procedure in the Chassis Service Manual? This is mandatory to get the CCC system to work correctly. One other thing to check is the function of the A.I.R. diverter valve. Once the CCC system goes closed loop (and starts using the O2 sensor), the A.I.R. is supposed to divert to the converter. I've had the valve fail open, so that pure air was being blown at the O2 sensor. The sensor saw this as too lean and ran the mixture control solenoid full rich to compensate.