biofuel and CEL 66

[Guest]

I made a bad choice in fuel and used gullforce10 in my 97 legacy rs for many months, a friend warned against it and soon after I got a turbo CEL occasionally, I stopped using the gull and after a 2 tanks the light stopped coming on.

For some reason, I got another tank of gullforce10. Now the CEL keeps coming back. It doesn't come on if the car is just coasting, but going up a steep hill and having to accelerate then it's bound to come on.

Also, if I have the car in diagnostic mode with the 2 sets of terminals in the drivers bay connected then it seems to behave ok..mostly, there is a bit of sluggish response.

Does anyone have ideas on what the biofuel did to the turbo set up? and in particular the 2nd turbo which seems to behave the worst. Yet to try much, I've only cleaned the solenoids out the way it is suggested on uk legacy forums with no noticed benefit

[Guest boostin]

I can almost guarantee it will be pure coincidence. Biofuel won't damage your twin turbo system, they die on their own accord. Start by checking the BOVs, mainly the secondary. They have a habit of leaking boost into the vacuum system. That throws code 66.

[Guest]

+1

Fuel is not going to trigger a CEL

[Guest]

ok, sweet. What should I be checking the 2ndary BOV for? cracks or something else

[wrx_lou]

Ive actualy been told many people, that i should definately be using force 10.

[Guest]

force 10 feels great, CEL 66 does not.

[Durty-Sanchez]

If it's the secondary it'll be loose like a palmy girl. They start to leak over time like the crappy (identical?) primary bov's.. pull it off and check it for holding pressure. If it's not that then check for split hoses both inside and outside the black box (of doom). Those are the usual suspects, every now and then it may be one of the sensors, valves, or the solenoids.

[Guest]

Check here

http://www.subaru.co.nz/Technical_Lab/Biofuel.php

If your car is a Jap import you probably shouldn't use Biofuel. Just what ive found when checking for info for my car.

[Guest]

LOL

[Guest]

 Qwerty said:

LOL

?

[Guest]

There was a thread about that long ago.

Subaru have never done any testing to see if E10 is good bad or indifferent.

All they know is when the cars were built back in Japan many years ago they only tested them with 3% ethanol.

No one at subaru have tested anything with e10 on older cars because they don't want to waste $$ testing it, they only sell new cars. The easy default position is to say don't use it

Subaru NZ would also disaprove of nearly every modded car on CS - saying you shouldn't do it