Skip to content
View in the app

A better way to browse. Learn more.

Ultimate Subaru Message Board

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

'78 Brat carb problems

Featured Replies

Well my Brat that I recently got had a bad disty so I dropped my EA81 2wd electronic disty into it and I also tore my carb down, let it soak in Chem-Tool, cleaned it up with some carb cleaner and put some new gaskets in it. Now here's my problem: it runs a little rich and when you're into it hard and then let off of it, it backfires sometimes. It also doesn't like to start very easily but my idle is where it should be. Is this a carb problem or does it sound like my timing is off or something? Just need some help:D

Did you make sure the float was set right when you put everything back together

  • Author

yup I did. It was one of the first things I checked while putting it back together. I still can't figure it out. Now it has a problem idling while cold like the choke isn't working. Meh, it stil will leave 20 feet of rubber from the back tire pretty easily:D

  • 7 months later...

holy crap - everything is the same with my gen 1 brat. Are you running the Weber? I think it might be because of the cold, but its pissing me off. I'm only getting 20mpg too! Argg.

  • Author

wow is THIS an old post lol... I had the stock Hitachi on it and it worked but I was getting 30mpg out of it... I did drop a JDM high compression EA71 into my Brat and put a Holley 5200 on it (a Weber knock-off made by Weber) and it wouldn't run quite right for some reason. I had a lot more power though which was the upside but I was also getting like 15mpg from it afterwards. The electronic disty helped a lot IMO. If you need help with an installation, I did a write-up in the USRM here: http://www.ultimatesubaru.org/forum/article.php?a=38 If you need any other help, I have a revised FSM for gen 1 stage 2 cars that was revised in 1982 I think and I can do a step-by-step process of carb rebuild procedure if you'd like.

I just had my engine rebuilt and I had my carb rebuilt too. Do you think it might be the jetting? When I had my stock hitatchi and my engine that was about to blow up I was getting 25mpg. Any other ideas on what it could be?

  • Author

so are you currently running the Weber or the stock Hitachi? If you're running the Weber, I'd look into getting it rejetted since its probably jetted too big.

Please sign in to comment

You will be able to leave a comment after signing in

Sign In Now

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.