CM 2250 EGR Valve question, please help...

[Marajin]

(04-04-2017 )JMBT Wrote:  Squish099, how long ago did you delete and have you had any problems?

Very few pple have issue after they MM the ISX. The older the engine is, the higher chances of revealing already existing problems like carbon packed piston/rings and other EGR related issues that have taken their toll. The constant barrage of soot to the engine and back-pressure on the exhaust covers up these things. The frequency of something showing up after MM is about 3-5% on a truck with more than 600k miles and about 10-12% on one with more than 800k.

Trouble seems to be mostly from very neglected trucks that had lots of issues in their past. It has some minor risk as the truck gets more and more miles on it with a failing system.

That risk is reduced by quite a bit if the power is not increased on older motor. Obviously the engine has worn to its settings and is never a good idea.