My ts4000 trigger is leaking gas from the small hole on the side of it, it will empty the cylinder. if you put your finger in the hole to try to stop the gas coming out it will eventually stop. the ruber seal at the base where i meets the gas tank is fine. how can i fix this or is it a throw away? only have used 1 cylinder but its almost 2 years old.

You dont say what type of vehicle, so assuming its a car type engine it is possible you have a leaking welsh plug. If you put you finger where the leak is you should find an indentation, which if correct, is the welsh plug. Dont try and repair yourself, have a technician do it as they are not easy.

There is no adjustment on the ts4000. The ts8000 has the ability to adjust by turning the knob while depressed, however the ts4000 does not. If you use a hose with an in-line regulator between the cylinder and the torch that would give you the ability to adjust your flame. Make sure the hose and regulator used are suitable and rated accordingly.

This bike has electronic ignition, if I remember correctly. Spark on one side indicates box may have failed or the trigger unit.. Try switching parts from one side to the other side, I.e. coil, plug, wires one at a time or if you have/can find good used or new parts to try. Are you certain all of the passages in the carbs are clean? If it starts and runs on one one cylinder by putting gas in cylinder, appears if your idle circuit is plugged or your choke circuit isn't working..

Air leaking around the trigger area could be caused by vinyl ball / gasket under trigger valve bushing or orings within the gun. Easy test, remove nails and connect air (assuming that air is now leaking around the trigger area). Depressing the trigger stops the leak, replace vinyl ball. Depressing trigger does not stop leak, move plunger b (plunger B, small shaft under bubber bushing next to the trigger valve) with your finger in then out to determine if air leak changes tone. If air leak changes sound or tone, then air is leaking past orings of the cylinder guide and/or cylinder plate and/ or the cylinder itself is scratched by debris where the orings make contact. Pull out the cylinder and examine the contact areas. If scratched, use 300 grit paper to smooth, if smooth, however, suspect the orings of cylinder guide (or cylinder guide is cracked). The cylinder guide is difficult to remove and install without causing damage to guide or cutting new orings when installing. Do not remove the guide unless all the other options have been checked. One last bit if information, I have noticed that some guns will leak air if the orings on the feeder piston do not fit snuggly. Make sure that leaking sound is not coming from feeder area (remove the basket and feeder/feeder pin/spring and pull out the feed piston, making sure that the largest oring is making good contact within the cylinder). Good luck with repair.

Check the alignment of the of the gasket in reference to the small hole on the sealing edge(gasket has four bolt holes and one vent hole). This small hole allows air to vent from the upper part of the head when you depress the trigger casuing the gun to fire. If the gasket seals the hole or if air is leaking past the orings in the head vale the gun will not fire. If you hear air leaking from trigger when you attempt to fire the gun, most likely orings are not sealing. Remove the headvalve and lube the orings. If no air leaks from trigger when your attempt to fire, vent hole blocked. Good luck with your repair.

Firing order for small block chevy is 1-8-4-3-6-5-7-2. The cylinders are numbered 1-3-5-7 on the driver's side of the engine counting front to back. Passenger side is 2-4-6-8, front to back. You will need to get #1 cylinder at top dead center on the compression stroke. To do this, remove the #1 spark plug and remove the coil wire from the distributor cap. You will need a helper for the next step. Place your index finger in the empty spark plug hole, Have your helper bump the starter with the ignition key, When #1 cylinder comes up on the compression stroke, the pressure will push your finger away from the spark plug hole. Don't worry, this doesn't hurt. Turn the key off. Check the timing mark on the harmonic balancer behind the crankshaft pulley. It should be pretty close to lining up with the "0" timing mark on the pointer attached to the engine block. Now pull the distributor cap and see where the rotor cap is pointing. This will be #1 on the distributor cap. The spark plug wire from the #1 plug will occupy that position. The next position on the distributor cap will be for the plug wire coming off the #8 cylinder. The rest of the plug wires will attach to the distributor cap in the above mentioned firing order counting clockwise. If you do not wish to place your finger in the #1 spark plug hole, you can use a piece of paper towel roll up and stuck in the hole just enough to form a seal. When the piston comes up on the compression stroke it will force the paper towel out. Any questions, just let me know.

Assuming no air leaks when you connect air to gun. Remove nails and remove roll pin holding trigger allowing access to pin of trigger valve. With very quick motion depress trigger pin all the way in. If the gun fires then most likely problem with safety and trigger not being pushed all the way up against valve pin. If the gun does not fire, most likely problem with headvalve orings not seating due to scratches where orings contact metal. Remove head and examing metal parts and sand with fine paper to remove scratches (400 grit to finish). Install headvalve into head with plenty of silicone paste lube and push headvalve down into head with thumbs. Cover venthole on sealing surface of head with finger and release thumb pressure. The headvalve should stay down in head with vacuum and release when you release finger on vent hole. If no vacuum then orings are not sealing and gun will not work correctly. Good holidays

There is a cracked seal on the firing valve. It looks like it cant be replaced but it can. Look in your parts breakdown .It seals the firing valve to the cylinder

Generally, when you attempt to fire and only get an air sound at the trigger, the problem is air leaking past the orings in the head valve. Here are a few things to check and a simple test.
Remove the trigger from the gun so that you can have access to the trigger pin. Remove the nails from the gun. After removing the trigger and the nails, reconnect the air supply (check for 100psi) Place the nose of the gun against wood and with a very quick ****, depress the trigger pin all the way in. If the gun fires then the safety foot is not allowing the trigger to depress the pin all the way in. Make adjustments to safety and check for worn trigger and trigger retainer pin. If the gun does not fire, remove the head. Place the head on table and depress the headvalve all the way in with your thumbs then place a finger over the small vent-hole on the gasket surface and release thumb pressure. The headvalve should remain depressed due to vacuum in the valve and will pop up when you remove your finger on vent hole. If the headvalve does not stay in, air is leaking past the orings. Remove headvalve parts and use magnify lens to find small scratches on the surface where orings contact. Remove scratches with very fine sandpaper (300 - 400 grit) Make sure all the orings are not cut (use magnify lens) and fit snuggly. Lube with "Danco silicone grease" available at lowes in the plumbing department. It is used to lubricate orings in faucets. After re-assembly, do vacuum test as described above. If you have vacuum, head is ok. Make sure that the gasket seals around the vent hole where the head mates against the body. You should be good to go. Good Luck and email if you have other questions.

Check the compression . A quick check is to ground the spark plug lead , then put you finger tightly on the sparkplug hole while pulling the rope. If it pushes your finger off of the hole and you cannot stop if from doing so, it is ok. If it doen't then you wil have to replace the rings and maybe hone the cylinder walls. dependant upon the wear(damage).