ISB fuel decay test

[windowrattler]

I haven't been able to find a definitive answer if the ISB 2250/2350 fuel decay/leak test specs are about the same with the 4000 psi drop over a minute. Most of what I find is more about measuring flow return rates similar to Duramax engines. Can you use the decay test on the ISBs like the ISX's?

[hookliftpete]

Ive done the test on my isc, not sure how similar isb and isc are.

[tree98]

Yes it would be the same, doesn't matter which cummins common rail engine you have.