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Guest Message by DevFuse

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Calling All Carb Gurus

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3 replies to this topic

#1 4FOR4


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Posted 18 December 2003 - 04:01 PM

Vehicle- '85 Brat GL w/1800 engine

Previous owner didn't like the carb so he put one on from a 1600

It seems to bog down when given gas and just has no where near the pickup of my stock '86 Brat 1800 original carb

The question- Is the no power problem a function of the non standard carb or since it does smell very sulfury, could a fuel mixture adjustment take care of this (running too rich)?

I'll admit carb adjustment is not my specialty.

Thanks for anything you can offer.

#2 GeneralDisorder


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Posted 18 December 2003 - 04:56 PM

Jets could be smaller on the 1600 (I'm not sure - but it stands to reason) - try an 1800 carb, or put a weber on it.


#3 Guest_taprackready_*

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Posted 18 December 2003 - 05:33 PM

Use a vacuum gauge, handheld tach or just listen and tune the idle mixture screw in until the engine stumbles, vacuum decreases. Then turn out slowly until idle picks up and vacuum is at its peak. You can also set the timing that same way.


#4 Ma-fia


    Eat, Live, Breath Subaru

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Posted 19 December 2003 - 05:26 AM

Well, here is what I know about carburetors: if a Hitachi carb goes bad, buy a new/rebuilt one.

I had a very similar problem: the carburetor was flooding, and nothing I did would change the situation (adjustment, no adjustment -- all the same). For a couple of months the car still ran (with 1/3 of normal power), and then died completely.

At that point I called my father-in-law, who used to be a Chrysler mechanic for 25 years. Not exactly a Subaru mechanic, but still a VERY GOOD mechanic. When he found out it was a Hitachi carb, he told me, that I should get a new one.

Well, I already bought the rebuild kit.
I tried to rebuild the carb TWICE. I had 3 of them to work with. After the first, as well as after the second retry, the car would start, but die immediately. If I kept her running by gassing up, she would run, but have almost no power.
Then I bought a rebuilt carb for about $250. No problems so far (after a year and a half).

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