Question about 2000 Suzuki GSX 750

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My fuel tank has a pinhole leak on the underside. @2mm diameter. rest of metal appears sound. can it be fixed relatively easily? it is on the flat base with plenty space around it.

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  • carljacks890 Nov 17, 2009

    i live in the uk and don't think that product is available here. cheers

  • carljacks890 Nov 17, 2009

    found some for sale in uk on ebay. cheers

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I recommend JB Underwater Weld.
It is $6 for the tube
It is gas proof, oil proof, water proof, and high pressure and temperature proof.

Posted on Nov 17, 2009

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I had a Chev Corsica with V6. The fuel lines that ran straight fore and aft to/from fuel tank were metal. But where comes out of tank it was rubber. I'm assuming you've developed a pinhole leak in one of the metal fuel lines. I would suggest putting a "sleeve" of neoprene fuel line over the leak and clamp in place. This requires cutting the neoprene hose lengthwise so that you can slip it over the bad spot. Jut keep in mind that these fuel lines are under a bit of pressure.

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You really need to provide a lot more information. You might be surprised at how many different makes and models there are out there and bikes even change from model to model depending on the year etc. So, it is also important to know what you mean by cleaning the fuel tank. for eg is it a metal tank or a plastic one, are you hoping to clean out a rust metal tank or just gunk from a metal or a plastic tank. Injectors cannot be disassembled to cleaning. Get new ones if needed. Rusty metal tanks can be relatively easily cleaned and galvanvize coated if that is the problem.

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Traxxas Nitro sport- When attempting to start the car, fuel won't circulate out of the fuel tank into the motor. "Choking" using a finger tip on the exhaust has no effect. The fuel line is...


Could be a pinhole in one of the lines or a small crack or pinhole in the fuel tank. You can check by removing the line from the exhaust pipe and blowing in it. If you cannot get fuel to move from the tank to the carb there is a leak in the lines or tank. If fuel moves to the carb when you blow into the line I would check the exhaust pipe and manifold to make sure that there is not a leak there.

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2003 chevy 1500 has a code that says large evap leak. Where do I find this leak?


"Where" to find the leak is in your evaporative emmissions system. Most of the time, a good visual inspection will turn up the culprit. First, check the fuel cap. Look at the rubber O-Ring that seals it against the fuel fill tube. If it is cracked or looks like it is crushed down, replace your fuel cap. If that all looks OK, then you can check the rest of the system for obvious cracks, or leaks. Start with the Evap Purge line. You can identify this in the engine compartment as a plastic vacuum line about 5/16" in diameter and it has a service port on it with a green cap. Check the plastic line for cracks. Then check the rubber components that connect to this line on both ends. One end will go into the Purge Solenoid and the other will go into a steel line that runs along the frame rail under the vehicle. Follow this steel line to where it goes and inspect all connecting hoses, tanks, etc. there will also be rubber hoses at the fuel tank area and some that connect to the fuel fill tube. Check all of these for any visual signs of damage or leaks. Also check for badly corroded metal parts - especially near the fuel fill tube. Sometimes the metal tubes get rusted through and cause leaks.

If a thorough visual inpection does not lead you to a suspect, then the system will have to be "smoke-tested". This is where the system is filled with smoke under a slight amount of pressure so the leak can be seen where the smoke comes out.

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Antifreeze leaking on inside passenger side of 1994 GMC suburban


It sounds like you probably have a leak in your heater core. Replacing a heater core can be a difficult job. If you decide want to try it I suggest you get a shop manual to help you out. I can give you a relatively easy temporary fix that will stop the leak until you have more time to fix it or you can take it into a shop to have it done. The down side is this fix will temporally disable your heater. Wait for the engine to cool. Open the engine compartment and look all the way in the back between the engine and the firewall. Find the 2 heater hoses that pass through the firewall. They should be about 1 inch in diameter. Undo the hose clamps and disconnect them from the firewall. Get a short piece of metal tubing about the thickness of the inner diameter of the hoses. Use this metal tubing to connect the heater hoses together and clamp them using the two hose clamps. Now the antifreeze that would normally circulate through your heater core will instead circulate through this loop and not enter the passenger compartment. If you can't find a short piece of metal tubing to do this fix you can completely remove one of the heater hoses. Then take the other heater hose and connect it to location near the engine where you disconnected the first hose. Save the first hose so you can hook it up later when you do the more permanent fix. Make sure to position all hoses such that they aren't resting on any hot surfaces. I hope this advice helps you out.

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1 Answer

I changed the fuel lines and replaced the primer bulb, but I cant remember witch way the fuel lines go from the tank to the bulb and from the bulb to the tank. Your help would be greatly appreciated. Thank...


The longest, and sometimes smaller in diameter of the two Fuel Lines, goes from the bottom of the carburetor, to the bottom of the tank. (The first line will need to be longer so that you can pull it all the way through to where you put gas in.) This so that you can easily attach the fuel filter. Then pull the Fuel Line back through the hole. Leave enough slack in this line so that the filter that attaches to the end will rest comfortably at the bottom of the tank. Cut off any excess line once you know that you have enough to reach the carburetor.

The other Fuel Line goes from the primer bulb to just inside the tank,(about a 1/2 inch). (Make sure that you get the right size fuel lines.) The plastic coupling goes on the end of this line, inside the tank. This keeps the line from pulling out of the tank.

(HINT): When feeding the Fuel Lines through the fuel tank holes, cut the lines at an angle. They will feed much easier into the holes. You can than cut them off square, once you know that you have enough to work with.

Three Fuel Line Installation: In this installation, the primer bulb is separate from the Carburetor.

The (1st) Fuel Line will be the longest, and sometimes smaller in diameter of the (3) Fuel Lines. It goes from the bottom of the carburetor, to the bottom of the tank. (The first line will need to be longer so that you can pull it all the way through to where you put gas in.) This so that you can easily attach the fuel filter. Then pull the Fuel Line back through the hole. Leave enough slack in this line so that the filter that attaches to the end will rest comfortably at the bottom of the tank. Cut off any excess line once you know that you have enough to reach the carburetor.

The (2nd) Fuel Line goes from the top stem of the primer bulb to just inside the tank,(about a 1/2 inch). (Make sure that you get the right size fuel lines.) The plastic coupling goes on the end of this line, inside the tank. This keeps the line from pulling out of the tank. This will be the shortest of the three Fuel Lines.

The (3rd) Fuel Line goes from the bottom stem of the primer bulb to the top of carburetor

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1 Answer

Inside gas tank all rusted. what should I do? where can I buy a replacement? Joe


I do not think you need new tank, unless this one is leaking. Rust indicates that you have very dirty fuel supply or leave tank often exposed to the elements, or you did not drain it for winter storage. Now, to remedy existing situation:

1. stop engine, check if tank have any leaks anywhere, mark if any
2. remove hose below fuel valve and then remove fuelling cup
3. drain all fuel in the system
4. remove screws holding the tank
5. remove tank from the engine
6. wash tank internally with water, as last give it good flush with hot water, dry with compressed air do no water is left in or out, leave even on sun for few hours
7. check for presence of pinholes, failed welds, leaks, if any are present, you can now safely repair this tank with normal or brass solder, there should be no danger as hot water and air removed all traces of fuel from the tank
8. if repair is not possible, then replace tank, any tank whihc can be mounted of similar dimensions will do, must have only similiar output valve diameter.
9. replace tank and connect all hoses
10. fill with new fuel

As I mentioned in intro, this is rather common problem which can easy be avoided, try every 10th fil add about 1/2 quart (250ml) of methylated spirit, it will "grab" water with it and will not distrub normal gasoline burning. do not use metho too often as it will create another problems, rusting of the exorst pipe and silencer...

Hope this solve you rproblem and allow you to use your equipment effectively in years to come.

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The fuel petcock (on/off tap) has a rubber pad that the metal plate rests on against underside of tank. This has more than likely perished and become hard and brittle. Drain remaining fuel (if any) and remove the fuel hose and remove petcock retaining bolts. Carefully remove petcock as two fuel tube filters extend into tank. Replace the rubber pad with a new one. Might be a good idea to thoroughly check for cracking on all rubber components on the bike, especially fuel hose and brake fluid lines. Cheers.

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Fuel leaking from top of gas tank


sounds like you are going to have to drop the tank out to inspect and fix. with luck it will be leaking from the fuel pump seal or the return line.
Bad luck would be if the tank is rusted out and needs to be replaced.
Syphon as much gas out of the tank as you can before you drop it , gas is heavy.

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