Paccar MX or Cummins ISX

I don't know exactly the time lines for the mx or for the isx fuel pump issue.. someone here may know

 

For the Paccar motors, 2013 was a updated design and their having a lot less problems with the regen issues.

@gokiddogo hit the nail on the head with the Cummins motors. The 2011-2012 isx had a bad fuel pump design. I thought they fixed it for the 2013 model. I know a fleet owner who toasted 3 motors because of the fuel pump issues and Cummins wouldn't warranty it.

 

So any truck 2013 or newer that has the mx-13 is 2nd gen.... The 2013 cummins isx comes in 2013+ trucks? I've found one with 975xxxkm which is about 609xxx miles for 50k canadian currency + taxes. Would you say it's too risky?

 

I'd definitely have it inspected by an outside shop and pull an oil sample for sure.

 

I've told the shop if I wanted to do a compression test on the motor and they offered to do it for me for free and said they are guranteed it would come in clean.

I'm really losing hope in looking for a pete with a cummins isx 485... all I can find is junk paccar

 

That's why they're cheap.

We have a 2013 T660 with a Paccar that I've driven for about a week. I'm not impressed. I was told the fuel millage would be a lot better then my Mack, but it wasn't really. I got around 5.5-5.7 running 70 mph 1/2 loaded 1/2 mt.

 

Hey friend I send you a pm check out the link and let me know what you think. It's also cheaper because it's their engine and probably costs them less than the cummins.

 

Hey buddy how is the 2011 cummins isx with a 18spd in a pete 386? Are there any issues?

 

It's a crap shoot. Depends how well it was maintained and operated.

 

I love resurrecting old threads...I case anyone comes along reading this...

Here is the deal Paccar motors are B10 rated. Cummins B50, but honestly they won’t even say for sure. Very secretive. Paccar tells you flat out theirs is a B10 motor. B10 means 10% of them will have a serious issue before 1.2 million. A B50 50% will. Volvo D11s, D13s and Detroit DD13s are also B50s.

Just my 2 cents.