Rough boggy idle on 82SC with rebuilt engine (35k)
 

Recently replaced spark plug, rotor and cap (and the alternator) but I still have a hard time starting and then a rough idle. When I give it some gas, it bogs down and nearly stalls with lots of backfiring. Everything else seems normal.

I have owned the car for 5 years and 5k miles. The PO said that the valve adjust ment had recently been completed so I have do that yet.

My question is does this sound like an out of tune valve or something else. Attached is a sound file of the engine idling and getting some gas.

Thank you for your help! Patrick

Missing audio file
 

Can't seem to figure out how to attach and audio file... I've uploaded the file to a server and I am waiting for it to process. Sorry!

My guess is the Lambda Relay, under the passenger seat, in the front, on the tunnel side. When it's bad, you will have a sputtery, popping, 'can't put your foot on the gas' condition when the engine is cold. (In my experience with a bad lambda relay.)

Yup. I'd look there first. You need to keep a spare with you anyhow so it won't really hurt to order a new one.

CIS troubleshooting.........
 

Patrick,

A very simple test to check if your FV is working is run the FP (engine not running). With the FP running, the FV should be vibrating (running). Use a stetoscope to hear a running FV. If it does not, inspect the FV relay under the passenger seat. Another thing to consider is your vacuum leak/s. Keep us posted.

Tony