Expert: Adam Kinion - 7/21/2009

Question
Hi.  How can I test the fuel injectors on my 4 runner to make sure they are all working.  My number 3 valve is not working, tested the spark plug and it runs rough.

Answer
Lisa, you can check the inj. electrically but not mechanically , take a digital volt meter put it on ohms disconect the wire from the inj. and probe one side to pos and one to neg and see what you have all the inj. should be real close to eachother but if one is for say 44.2 ohms and the rest are 13.4 than the one would probobly be faulty . thanks ADAM