The good news is that testing a misfire code, or misfire codes, or a rough idle condition is not that hard and it's something you can do! In this tutorial, I'm going to explain in some detail the most common causes of misfires and misfire codes (P0300, P0301, P0302, P0303, P0304 -OBD II equipped 1.8L Toyota).
Solder flux is a type of metallurgy component used when soldering two metals together. The flux is an inert substance that prevents the formation of metal oxides at extreme temperatures.
Batterns Flux. 1  Handy Flux is used for easy and medium soldering (solder that melts at a lower temperature) of gold and silver. 2  It can be diluted with distilled water if it is too thick. 3  Itâs available from Amazon in 7 oz, 1/2 lb., and 1 lb. jars.