Troubleshooting the 81 suzuki twin gs 400; Potential troulbe – JustAnswer

23 May 2015 | Author: | Comments Off on Troubleshooting the 81 suzuki twin gs 400; Potential troulbe – JustAnswer

Customer Question

Expert: replied 5 years ago.


You are with not one problem but more 5 problems simultaneously. I am going to try to to break each one of them in order to properly advise on them individually.

#1 thing to do. collect all of you tape, glue, and and immediately throw it all away. of these repairs can be done those materials and they are causing you additional problems.

start at the top and go from there. tank:

-It is very likely you have some debris in you If you open you gas cap and see any rust (or any color than shiny metal) you cannot go any further before proper steps to rid of it. Rust go right through a fuel The rust particles are too small for a to block without blocking the flow itself.

Even rust has a tendency to coagulate in the bowl of the carburetor causing a of problems including sticking to pilot jets that quickly no matter how many you clean them. There are a of ways to get rid of the rust. The best way to with the problem is to replace the with a new tank or a used that is clean inside and no signs of ever having in it.

Though this is the most way to deal with rust or in a tank it is usually somewhat The alternative is to coat the tank a product called Kreem It is a three step treatment in most motorcycle shops dealer and independent).

It only about $45. The treatment is as a permanent solution to rust and debris in a tank but the reality is the coating typically lasts 2 years before it begins to off. How closely the directions are and how carefully the product is applied a big difference on how long it actually If you choose this procedure be that you will need to an entire day to deal with tank.

The coating process constant attention every 10 to 15 for hours on end. You will need to remove your tap, fuel level (if you bike has one), fuel and any other accessory installed on the for that matter. Use other to plug the holes during the process.

Problem #2. Fuel tap (petcock): If fuel tap is leaking you will a complete rebuild kit or a replacement tap (new only). This is pretty point blank. If the tap leaks not only can it cause the of fire and fuel flow but it will also cause problems. (No Permitex Allowed!)

#3 The fuel lines and the vacuum from the fuel tap to the intake should also be replaced. Do not use fuel line. It is not the same.

Pro makes an excellent non-braided and vacuum line selection meant for motorcycles (available most motorcycle shops). Use it! is a cheap and effective way to eliminate leaks and pesky vacuum

Problem 4# XXXXX: Your are still dirty. The fuel out of the overflow is the … give-away. and rust in the tank can cause carburetors to dirty up almost

Sometime so fast that you even make it out of your Regardless of and debris the reason carburetors are leaking from the is because the float valves are open or leaking and causing the to overflow. Outside of the leak, of your running problems are related to the pilot jet circuit in the being dirty.

Remember, when cleaning it is not just the jets that to be cleaned but all of the small passageways, related adjustment components, and valves. When the carburetors are the float levels will to be set and the fuel/air screws set (2 turns out work better as a starting

-Floats need to be adjusted compressing the spring portion of the valve. This can be accomplished by the floats while the carbs are on side instead of turned up down. This will you a far more accurate adjustment.

If the portions of the needle valves are not then the valves need to be

-Fuel/air screws are adjustable on carburetors. The EPA requires that all have this adjustment to the public because when not properly it adversely effects at idle. When the carburetors get this restriction has to be removed so the screws can be removed to be properly and serviced.

The fuel/air screws are blocked by press fit aluminum or brass that must be carefully and pried free of their

-You will need to the rubber diaphragms on the top of your for any rips, tears, or holes. If are any they will need to be with a good used or new. Upon installation of the special attention will to be paid in order to make that they seat

It is extremely easy to pinch or the edges of these diaphragms will cause running and will sometimes ruin the by pinching small holes in it.

bowl gaskets should be not Permitex’ed (Remember! Permitex is a BAD in motorcycle land)

Problem #5 rubber: The intake rubber to be replaced before you can even to get the machine to run properly. Any leak, a small one, will the engine to stall at idle and above idle. It is not just the rubber between the carburetor and the that needs to be replaced the rubber between the carburetor and the too. The air filter will need to be in very good or new.

An old, or dirty air filter throw the whole thing

Problem #6 Carburetor synchronization: The you are getting such wild has nothing to do with a malfunction of the or your gauge. The vacuum to the gauges must have in them to smooth out the pulse of the vacuum and provide you with an reading. You will find if you slowly pinch the lines go tot the gauges that they stop swinging wildly and will be a sweet spot they will also to changes in vacuum when the is revved, stalls, or the carburetors are and balanced (ideally).

Concern: on your cam chain is NOT usually a thing. Make sure the adjustment is done precisely as the suggests. 4-mm of slack extremely excessive to me.

There are so problems happening at once this machine that you may to take the bike to a shop and let take care of the basics. there you will be able to the problems as they arise much greater ease. The important thing you can do if you do decide to this entire project is to and conquer.

Do not try to handle all of the problems at once or a couple at a time. Taking on one at a and especially taking your as you go through the steps will you the best success. Motorcycles are like a swiss watch in to common machinery such as and need to be handled as such if you to get then to run smoothly and reliably.

I that few people have avoiding this question due the problem and multiple question of the repair(s) you are seeking. There are MANY variables, some of are outside of the processes described You may need to break this down into smaller and questions in order for us to provide you more specific and detailed information, and helpful advise.

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