1929 Auburn 8-90 Carb questions

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1929 Auburn 8-90 Carb questions

Post by GasWorksGarage » Thu Sep 14, 2017 11:49 am


we have a 29 8-90, it ran great let it sit for about a month now runs rough back fires and will not run unless the choke is pulled partially out. I want to drain the gas and drain carb. There appears to be a plug on the bottom of the carb. What else should I look for? Also in the pic of the carb. What is under the plate on top? Also, when driving should the manifold heat cable be in the on or off position?

Thanks in advance.

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Re: 1929 Auburn 8-90 Carb questions

Post by cudaman » Fri Sep 15, 2017 5:33 am

I don't know the answers to your questions, but here is a link to an owner's manual, maybe that will help. :)

http://store.automobilemuseum.org/brows ... 4,297.html

jeff deringer
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Location: Camas, Wa

Re: 1929 Auburn 8-90 Carb questions

Post by jeff deringer » Fri Sep 15, 2017 9:45 am

Regarding the manifold heat question, I would leave it off all the time. Those were made for a time when gasoline was not nearly the advanced product it is now, and people stored their cars outside, or at best under cover in the cold. I would also not use any ethanol fuel. Look for the "Pure Gas" app on your smartphone, it will show you everywhere non-ethanol is available. In the meantime, I would try a can of Seafoam in the gas tank. Let it run and drive it. That stuff works magic. It's like a modern Marvel Mystery Oil!

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