What causes increased resistance

[bcjjones]

Getting a little misfire, tested the fuel injectors and from what i read, on my 92 talon tsi the resistance should be 3-4 ohms. Im getting about 7 on each injectors, so im upgrading to 550 or evo 580s.

My question is what causes this? I understand the basics about injectors but dont fully understand what would cause increased resistance.

Also, I know I shouldnt be but im running a walbro 255 hp with a stock fpr UNTIL I get an AFPR within the next few days. Could running this pump cause too much strain on the stock injectors therefore causing my current problem?

 

[Mr PopUps]

The coils just get old and sort of open up more and more each day.

 

[bcjjones]

So basically though with the increased resistance theres not enough voltage to open up the pindle inside the injector to allow enough fuel threw?

 

[Mr PopUps]

Eh, more or less. If you want to upgrade go for it

 

[bcjjones]

Yea hopefully this weekend ill be ordering a few parts including new injectors. Thanks for the help man!

 

[Mr PopUps]

Np

 

[josh1095]

any conductor over a period of time increases in resistance. current flows on the outside of a conductive material, the more it degrades, the higher the resistance. in turn, the higher the current needed to accomplish the same task.