Jump to content

Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse

- - - - -

Sudden bad idle on a '87 EA82 GL Hitachi carb'd SW: why?

  • Please log in to reply
2 replies to this topic

#1 jdub


    USMB Regular

  • Members
  • PipPipPip
  • 65 posts
  • NorthWest

Posted 24 January 2005 - 02:17 PM

Many thanks in advance for you help on this idling problem. Car is an '87 EA82 Hitachi-carb'd GL station wagon. Problem is bad idle that appeared suddenly. I can't spend much money on this so I need to narrow down to what I can do at home in my workshop.

Drove car home from work, operates nicely, 1/2 a tank of gas. Park and wash. Restart later: idles high in choke mode, but barely holds an idle after warmup, instead holding at about 3-4hundred rpm. Later, cannot even hold this and dies (must rev. to keep from dying). Level, constant pressure on gas pedal produces uneven idle, but not a constant miss, just rough and uneven.

What I've done: Replaced gas filter @ tank, plenty of gas flowing from gas tank. Removed gas cap and ran: no luck, still bad. Filled tank with 92 octane. Checked choke cycle; carb butterfly returns to normal fine. Gumout down barrel. Inspected and replaced plugs (all OK). Air filter fine (ran with cover off: problem persists). Vaccum hoses all connected. Good (~12+v) current return at battery (no electrical problems whatsoever). Fuses all check OK, including those in eng. comp.

Have not checked gas flow at carb. Cannot find anti-diesel valve. Cannot check timing (no idle). Also, idle would increase or decrease depending on selection of Defrost/Heat using buttons prior to this problem (never caused under 800 idle however).

Anything obvious I should try? What could possible have happened to turn the car from idler to this?

Many thanks,


#2 robaru


    USMB Regular

  • Members
  • PipPipPip
  • 63 posts
  • Columbia Gorge

Posted 24 January 2005 - 03:18 PM

There is an idle speed adjustment screw on the botttom of the carb. Don't confuse it with the air screw. Turning it in should increase the idle speed. Try it after you warm it up. Did you wash the motor when you washed the car? You might check the disty cap for water.

#3 jdub


    USMB Regular

  • Members
  • PipPipPip
  • 65 posts
  • NorthWest

Posted 24 January 2005 - 06:55 PM

Thanks for the reply. I was careful not to get any water in the engine bay, and did pop the dist. cap to check it and the rotor.


0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users