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Can't keep idle down on 84 GL 1.8 with Hitachi


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Download how to keep your Subaru alive (can be downloaded as a pdf from suberdaves site) and read the section on idle tuning. It's a great reference, very easy to follow. That's how I tuned mine. In my case, I had a similar problem, it would idle at 1200 rpm and got to 2500 on cold starts.

Turns out the throttle cable was too tight. By slacking it off a little I was then able to adjust the idle speed screw to get it perfect.

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On 9/10/2019 at 3:39 AM, franbev said:

Where can I find suberdaves site?

If you Google the phrase below you'll get to the link:

Suberdave HTKYSA

Here's the address

https://www.google.com/url?sa=t&source=web&rct=j&url=http://www.suberdave.com/USMB/HTKYSA.PDF&ved=2ahUKEwig5MKg9svkAhXZXCsKHUVTDkYQFjABegQIAxAB&usg=AOvVaw2KpGAVbcyryyF9wEZfGJpE

 

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