Fuel Filters change ISC Cummins
My 2005 Cummins ISC has 2 fuel filters. One has the water sensor and drain which Cummins manual says is the suction filter and the other is the pressure filter. I changed both filters but according to...
Forum Discussion
Popsie wrote:
When I change the fuel filters, I use a threaded pipe plug in the center hole then pour oil into the outside holes. That way, the only oil that gets to the engine is oil that has passed through the filter material.
We've been fulltimers since 2003, and when I change the filters, I just crank the engine and it fires up shortly. Never any problem.
YMMV
"Just cranking" the eng can lead to nightmarish results on some diesels. It can require opening injector lines and more endless cranking.
While you may get away with it, many won't and in some cases forcing air through certain inj pumps will severely shorten their life (esp the CAPS system).
Modern, Common Rail systems are the most forgiving and will purge themselves.
