Could be a vacuum leak.
I assume you mean "When your hot water needle does NOT work." Thermostat.
If it's an electronic (analog) speedometer needle, you probably have a problem with the dasboard grounding.
you unscrew the cap of the needle on the end of it and thats it!
You should get a needle that has already been passivated for best results.
you unscrew the cap of the needle on the end of it and thats it!
If the temperature gauge needle doesn't go back to zero when the car is shut off, it is possible that the needle is sticking. A little WD-40 or electronic spray on the gauge might fix the problem. There could also be a problem with the MAP Sensor or a Radiator Pressure sensor in the engine.
Needle nose pliers are the best for this problem.
When tattooing your clients, depending on how big or small and what needle you are using, you will want to make sure the needle isn't sticking out of the tube too far. You want out just enough to where when you hit the foot pedal you see it. Also another problem is by how deep you push the needle and how hard you drag it across the skin. If you make sure your needle is okay and if you use Vaseline it helps with your sliding motion of the needle across the skin.
Check the needle in the carburator. Could be some problem with the float. Take it apart and and clean everything. A new needle and valve seat kit could be the next step.....
If the speedometer needle is going crazy and not working properly, it is probably the speedometer mechanism that needs to be replaced. It could also mean the vehicle is having a transmission slippage problem if the needle is bouncing back and forth.
A hypotonic needle is a needle that is a non coring needle. A hypertonic needle is a coring needle. Both of these needles are used in IV's with a hypotonic needle used for hypotonic solutions.
Check your thread tension. You may also be using the wrong kind of needle.