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Brewbaru

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  • Location
    Edmonds WA
  • Referral
    Searched for info on Hitachi carbs and whether they suck.
  • Biography
    Been into cars since I was a kid. Followed WRC (22b was my favorite car) as a kid and got into Subarus once I could afford my first. 2003 WRX Wagon with 135k. Since then I've owned 5 different Subarus. Just bought my first carbed Subaru, an ea81 Brat
  • Vehicles
    1983 Subaru Brat GL

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  1. Yea the primary and secondary jets on the sides of the carb were both loose when purchased. Everything else was nice and snug. Didn't think to check the brass on the float but I won't make that mistake again. The mixture screw is right behind the electric choke on mine. Top of the screw faces out to the throttle side of the carb. After that fix it was running really rich to the point of smoke on start up and even oil spitting out of the exhaust (it's straight piped). Carb is tuned and humming along now, really liking how it's running.
  2. Just wanted to leave an update, Step-a-toe you were on the money. Got to the float and the brass plunger had come loose somehow, causing it to restrict fuel from getting to the carb. Tightened that sucker up and she fired right up. Thanks for your help!
  3. Gotcha, I'll pull the carb off today and get to the float. Do you know if there is a specific setting the float needs to be at for these ea81s? I just put in on how it was out of the box but it does look like you can adjust it. And thanks for the reply!
  4. Hi all, I've been using this forum for the last month to try and figure out for to get my 1983 Brat GL running. I recently rebuilt the Ea81 it came with and swapped the hitachi carb for a Weber (new). There are some rust issues with the car but the engine is in great shape. I've got the engine back in the car and it'll fire up with starter fluid sprayed straight into the carb. Tuned the fuel mixture, set idle, timing, etc. Now the issue is, if I detach the fuel line going straight to the carb and run the fuel pump, fuel comes out of the line and flows nicely. However, when I attach the fuel line to the carb and run the pump, it's like there is no pressure at all. No fuel runs through the forward fuel/vapor filter. I hear the pump running but fuel doesn't fill the filter. Could it be an issue with the float? Or possibly the Weber filter underneath where you attach the fuel line? Or a pressure issue? Do these carbs need a return line? Would really appreciate everyone's ideas and replies in advance. I've worked with the carb on my motorcycle (dr650) but other than that I don't have too much experience with carbed Subarus.
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