Motorcycle Tips「DIY」Opening the Slow Jet with the Power of Threatening Vinegar

DIY11.jpg How to

Rust and dirt can cause clogged jets in carbureted vehicles that have been neglected for a long time. Rust and dirt can flow into the carburetor, or fuel can change its properties, but these are the first things to be suspected when the engine of an abandoned motorcycle does not start. However, it is not always easy to remove them. Jets are thinner and more precise parts than you might imagine, so if you easily poke at the clogged part with a hammer, you may cause unnecessary damage to the engine and worsen its condition.

In this issue of MOTO HACK, we introduce the maintenance diary of Mr. 036, who solved such rusting of the carburetor with a familiar object. Mr. 036, owner of a Honda XLR80R, had trouble starting the engine for the first time in a long time and also experienced fuel overflow from the carburetor. He had no choice but to disassemble the float chamber and found that the aluminum carburetor had rusted and clogged the jets. The reason why the float chamber, which should have been filled with fuel, rusted was that the fuel had been drained from the carburetor during the long storage period and the bike cover had been tightened too tightly, which allowed moisture to seep in.

And unluckily, there was no chemical carburetor cleaner on hand to clean the carburetor. So Mr. 036 came up with the idea of soaking the jets in vinegar, which is everywhere! Would such a thing work? He thought it would work, but he was able to penetrate the aluminum rust that was stuck in the jet. This is because of the acetic acid in the vinegar bonds with the rust and breaks it down, removing the rust through a chemical reaction!  A successful recovery with something familiar!

However, acetic acid has the ability to corrode aluminum and brass, the materials used in carburetors!
Therefore, there is a risk of metal tarnishing if the carburetor is soaked for a long time or left unattended after the work is done. Because of this risky operation, please be careful when you try it!

XLR80R Threat: The Power of Vinegar

From 036's maintenance diary, October 30, 2022.

Work Process 1

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The XLR80R carburetor was supposed to be troubled by aluminum rust.
Although I made full use of various things such as fuel and Bonster for the engine control, the clogging of the slow jet did not disappear. So I decided to try using the wisdom of life in edible vinegar.

And the result.
Mi*kan is amazing.
The pit of the throw, which even the wire could not penetrate, is pierced through. When you blow in parts cleaner, the solution pops out vigorously! When I plugged the pit with my finger, the solution popped out from the side hole!
Aggravating tension and mikan sensitivity. Oh, the protrusions that were covered with kitchen paper were also cleaned. The dented spot at the drain bolt area was also cleaned up.

Well, what I want to say is that the vinegar attack on aluminum and brass rust was more effective than expected.
And since it is food, there is no danger at all. The only drawback is that the room is filled with a sour smell.

Well, I guess I didn't need the carburetor cleaner I rushed out to buy, did I? Well, it's a good luck charm in case something happens. And since I bought it anyway, let's do a carburetor clear attack following the vinegar attack. A few hours of soaking should be enough.

Work Process 2

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So, suddenly, I finished soaking the carburetor and sprayed it with ZOIL spray as a bridge until it was ready to be mounted on the motorcycle. The picture was taken just before assembly after spraying.
I wish I had a picture of the results of the vinegar attack and carburetor scrubbing just in case, but I was so excited to work on it because it turned out cleaner than I had imagined that I forgot to take a picture.

To begin with, at the time of the vinegar, the XLR80R was cleaner than when I overhauled it right after I got it.
Then I cleaned up the intricacies there with a carburetor cleaner, and it's all shiny now. Except for the drain bolts, which were scratched up with a vise. So, for now, I sprayed the engine with Zoil Spray, which is an oil that is safe to get into the engine!

Thank you for your valuable ideas, "Mr. 036" who introduced the "XLR80R Threat: The Power of Vinegar". 
*The articles on MOTO HACK are composed and reprinted from user contributions. The effects and methods described are at the discretion of the user, and Webike is not responsible for any problems that may occur.

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