1990 Civic High Hydrocarbons :( ??
 

Sup All, I got a 1990 civic hatchback. Did a complete tune-up, went in to take emmissions, everything is fine except to high of hydrocarbons any suggestions on what i could do to reduce mah Hydrocarbons while idling??

RE: 1990 Civic High Hydrocarbons :( ??
 

If you need to lower it to pass, then fill your tank with the highest grade gas you can get (something like 93) . Run atleast a tank through your system before going back. That should be a quick fix for now... but wont fix it for more than a week or so.