Jump to content
Ultimate Subaru Message Board

Ethanol? 4th Gear Stumbling


Recommended Posts

Well thought I had solved the problem with vacuum hose leak, this morning stumbling on the highway again. Hose is fine not the issue I am wondering if it might be the ethanol they start adding to the gas here in oregon in the winter? If not that, something is up with fuel delivery.

Link to comment
Share on other sites

honestly, when I was carbed, I had to readjust everything for summer vs. winter - the other possibilities are a worn-out fuel pump, clogged fuel filter/air filter, and condensation in the gas tank - many products are made to clean the fuel system/condensation out - I would go ahead and try one

 

how are your plugs, ignition wires, cap, rotor? those can cause highway problems as well

Link to comment
Share on other sites

Ethanol should take care of any water/condensation issues. That's what HEET and other gas dryers are made of.

 

It's possible that it might be fuel-related, but if it's vacuum it should be most noticable at idle. I would also look at the distributor cap/rotor, coil, etc.

Link to comment
Share on other sites

Please sign in to comment

You will be able to leave a comment after signing in



Sign In Now
 Share

×
×
  • Create New...