bad gas

I stopped for gas at a Mobil station for my '82 244 Turbo, as did my wife for her '92 940 Turbo, and thereafter we both developed similar drive-ability problems.

The cars start okay but often (not always) idle roughly, and at low speed acceleration it feels like a series of misses, causing the car to go forward sort of herky-jerky.

Problem mostly clears at higher speeds, e.g. over thirty or so.

No trouble codes on the 849 Turbo.

I am assuming we got a dose of bad gas, and am trying to figure the easiest way to drain the tanks.

At Fuel Pressure Regulator, there is a return hose going back to tank...so remove return hose, and insert a longer hose, which the other end is placed in a two gallon plus gas can. Engage fuel pumps....be nice to run a battery charger at same time while draining.

When you get some gas out, try pouring some into a tall clear glass. Let it settle for a while and then closely look to see if a layer of water forms at the bottom. If so, that gas station has water leaking into the underground tank.
Dave B

When you get the crap gas drained, consider getting some non-ethanol stuff to run through the systems... My 245 runs better on E0 gas. Previous 245 developed severe runnability problems before I discovered the site linked below. A couple tankfulls, and it was back to normal.

http://pure-gas.org/index.jsp?stateprov=WA
http://pure-gas.org/index.jsp?stateprov=OR

Or, alternatively, put some 'Heet' in the tank - it's ethanol (and some other stuff) and can help absorb the water and carry it through the system in a less disruptive fashion.

But it does sound like water to me as well.

Heet is 99% isopropyl alcohol, which is good. Don’t add more ethanol, problems when it’s older and isopropyl does a better job of clearing moisture.

The red bottle, Iso-heet Is the best for water in gas.