running a little lean, understanding O2 sensors

[flee27]

Thank you for the replies and links.

To clarify I did not solder the O2 wire. The plug I was referencing to that deteriorated was the round rubber? insulator where the signal wire plugs in under the fuel filter. The actual mechanical parts of the plug are fine. I plugged the sensor back in and insulated the connector with tubing and elec. tape. That is out of the picture no either way.

Best
Foster

[flee27]

I am attaching a video from a smoke test today. I used the small line off the cruise for my smoke input.

What would be the source of the smoke in the video? it is the drivers side half of the engine towards the front of the car, cylinder #3. After about a minute or so of inserting smoke I also got some smoke out of the air intake.

https://share.icloud.com/photos/076VZcuYwk57q81rUMvfDDhwg

Thanks for the continued help.

Foster

[flee27]

More info. The smoke in the above video and a few other places seem to be coming from the intake manifold where they meet the heads.
Foster

[flee27]

To finish the thread. While pulling the intake manifolds to replace the gaskets lead to project drift, it is finally back together. I ended up vapor blasting all the parts, replacing the parts in the TOD, servicing my fuel injectors, and generally cleaning everything off since everything was off the block.

My car has lots of years of dirt, oil, etc. caked on everything. I have cleaned a lot since acquiring the car and this was another great opportunity to clean things I couldn't see or have access to before. My car and myself are much happier now. Like how you could run faster with your new shoes as a kid...

The intake manifold gaskets where definitely leaking in many spots and causing my lean running condition. Now the car runs great and my AFR numbers are where they should be.

Thank you for the inputs given.

Foster

[wazzz]

What about cylinder 1 low compression?

[flee27]

Originally Posted by wazzz

What about cylinder 1 low compression?

Going to put a few more miles on it and recheck it. I will update it anything changes short of a head rebuild.

Best
Foster