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Hi,the filter didn't accidently get put in backwords ,did it? I'm not familiar with Granites, but have seen this done on R models a couple of times. Good luck, Steve

the air filter was inserted in the correct way and i have no idea how this message popped up i am just guessing that this could be a issue with these new engines I think the truck has the MP8 engine and that this is the 8th issue so far and the truck is still under the extended warrenty.

my truck has a air restriction activation message and I can't figure it out can anyone tell me what that means.A Brand new Air Filter was installed yesterday that is when that message popped.

What color is the engine? If it is gray it is an ASET engine, if it is Red it is an MP engine.

Found the problem it was a defective cam in the engine

Has the truck ever had problems with the DPF and did you ever REGEN the DPF filter because if it does not regen it will kick the engine MIL If you never regened the truck before it is very easy.

It does it have a MP engine? If so, it might be low fuel pressure due to blown injector cups. There is finally a fix for this as we have been putting in the new stainless steel cup's and new style injectors. Is the truck model a CV713 or a GU713?

It is a gu713 because i looked up the same kind of truck on truckpaper.com .I think it has the MP series engine

What color is the engine? If it is gray it is an ASET engine, if it is Red it is an MP engine.

I will find out from the driver and i will get back to you with the color of the engine

It does it have a MP engine? If so, it might be low fuel pressure due to blown injector cups. There is finally a fix for this as we have been putting in the new stainless steel cup's and new style injectors. Is the truck model a CV713 or a GU713?

I guess it is one of those model well I have no clue

It does it have a MP engine? If so, it might be low fuel pressure due to blown injector cups. There is finally a fix for this as we have been putting in the new stainless steel cup's and new style injectors. Is the truck model a CV713 or a GU713?

i will find out because my father drives the truck for a company all that i know is that it is a granite and that is the only info that i know at this time i think it is a MP series VMAC IV

I can not tell if the engine is blown or what or the injectors are gone my truck has had many problems for it's year 2008 my company has to sister truck's both mack same year model.the funny thing is it is not throwing any codes it is just acting funny.