Has anyone converted from reg CIS to CIS lambda?

[oneblueyedog]

I'm almost ready to sell the car on account of not being able to keep the mixture set correctly with all of this weather changing back and forth. If someone has done the switch to lambda and the car stays tuned in mix, next time a CIS lambda comes up for sale I may get it.
I do not understand the self tuning sensor plate method. I've tried it countless times with variable results, joys one day, stall out after warm ups the next. Pinging to "eu de petrol" richness.
Yes I have a CIS pressure tester and the WUR is spot on for the chart with a vaccuum pulled on it as in the tech spec book.

Indeed thank you in advance for any attention you give to this problem.

[Paulporsche]

Oneblueyedog,

I haven't made that change, but I have found out recently that my engine w/ its lambda removed appears to need WUR settings outside of spec. I have a thread on how this came about.

Don't mean to hijack. I just wanted to point out that there may be another solution available to you.

[oneblueyedog]

I'm wondering if the Fuel distributor is shot. I only have 250k on the car. It's also the only thing I have not replaced on the CIS system.

I'm going to burn another $160 to stick a gas analyzer on it and have it set. If it has funky function after that, I'm on the lookout for another induction system or car.

[euro911sc]

There is a fuel distributor rebuild thread floating around as well as a few places that will rebuild or sell you a rebuilt one for your core. But I would be certain that is the issue before going there as it could be expensive.

Moving to a totally new induction essentially means carbs or efi... both much more expensive.

-Michael

[psalt]

If you have high mileage on the engine, I would test for poor compression, and vacuum leaks at the injector sleeves, boots, air box and throttle shaft. You may have a heat related problem that effects the mixture outside of the FD.

[Charlie V]

Originally Posted by psalt

If you have high mileage on the engine, I would test for poor compression, and vacuum leaks at the injector sleeves, boots, air box and throttle shaft. You may have a heat related problem that effects the mixture outside of the FD.

+1 and fuel distributor could be dirty and/or need rebuild with your mileage.

[oneblueyedog]

I'm going for a mixture adjustment on Monday.
The engine was rebuilt by me 50k ago.
The intake runners were rebuilt with new phenolic sleeves and o rings this year.
Everything is new.
I'll have a complete list of all the items I've done and a bunch of cool tools to go with it when I put it up for sale.