Lezbaru Posted January 12, 2021 Share Posted January 12, 2021 Hi y’all, Got my 85 Brat back in the summer and have been slowly fixing it up. Don’t know too much about the history of the car so went into everything pretty blind. I ran into an issue initially where when I would get the car up past 35mph, it would start bucking pretty bad and sometimes even stall out. I just put a new carburetor in thinking that would fix the problem , and while it runs way better, I’m still experiencing the bucking issue. Has anyone dealt with this issue before? Wondering if it could be fuel related but not sure. Thanks! Quote Link to comment Share on other sites More sharing options...
DaveT Posted January 12, 2021 Share Posted January 12, 2021 T in a fuel pressure gauge. See if it drops too low. Starving for fuel causes bucking. Possibly spark problem - if the fuel pressure gauge stays up under the conditions that cause the bucking. 1 Quote Link to comment Share on other sites More sharing options...
Lezbaru Posted January 12, 2021 Author Share Posted January 12, 2021 27 minutes ago, DaveT said: T in a fuel pressure gauge. See if it drops too low. Starving for fuel causes bucking. Possibly spark problem - if the fuel pressure gauge stays up under the conditions that cause the bucking. Makes sense — will look into that, thank you! Quote Link to comment Share on other sites More sharing options...
Dee2 Posted January 12, 2021 Share Posted January 12, 2021 Could be as simple as a fuel filter problem... Quote Link to comment Share on other sites More sharing options...
Step-a-toe Posted January 12, 2021 Share Posted January 12, 2021 Two fuel filters, one front, one near pump in most EA81 carby models. Fuel hoses have been found to break down internally. I also have, and many others, had to use compressed air to blow out the steel fuel lines, section by section. The final section into the tank was my culprit. Rusty crud like nothing else blew into the empty tank. Cleaned out from sender hole with rag on long piece of wire 1 Quote Link to comment Share on other sites More sharing options...
Lezbaru Posted January 12, 2021 Author Share Posted January 12, 2021 Thanks all! I had replaced one fuel filter but didn’t realize there was a second one — that one looks pretty cruddy so gonna switch that out. Definitely plan to check the other stuff as well. This is really helpful! Quote Link to comment Share on other sites More sharing options...
Lezbaru Posted January 12, 2021 Author Share Posted January 12, 2021 Y’all are lifesavers! Switched out the second filter and the bucking is gone — runs and sounds so good! 3 Quote Link to comment Share on other sites More sharing options...
Step-a-toe Posted January 26, 2021 Share Posted January 26, 2021 Get yourself spare fuel filters for both ends. Depending on your curiosity you might just change them again in either the recommended distance or time period, or just to monitor the situation. 1 Quote Link to comment Share on other sites More sharing options...
Lezbaru Posted January 28, 2021 Author Share Posted January 28, 2021 Great suggestion, thanks! Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted January 28, 2021 Share Posted January 28, 2021 You can still get those filters from Subaru and they are cheap. Just FYI - they are better quality than any of the aftermarket stuff. GD 2 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.