2006 peterbilt 379 cat c15 mxs on going fuel issue

Also this part did not work. It was a few thousands off and leaked fuel. Went to my local industrial connection had to thread an adapter in place of standard quick connect.

 

I got my pressure readings. 80 psi at idle I have it set for 750 rpm idle. Also I decided to go into the bleeder on the left of housing as it doesn’t suck air into the system. I couldn’t find a compucheck fitting till I figured it out CAT has the part and it will save tons of hassle. I just made a brass assembly that fit into the bleeder

 

Ok so that still doesn’t solve my issue. I noticed a ground on the left side of the motor was busted off replaced that it looked like it was heading towards ECM but never looked any closer. Also my actuator on my waste-gate is either stuck or very hard to manually control lol. it’s stuck closed as of now.

 

Compuchek is a tool brand used on engines of all sorts. My bobcat has them, my cummins in my truck has them, my massey Ferguson tractor has them, etc etc.

Also you don't need to buy the assorted expensive gauges for compuchek. Just get the female fitting and pipe it to an accurate pressure gauge.

Another note. The fitting at your primer should be able to be used to prime the fuel system with an electric fuel pump. That's how I prime my Cummins after changing fuel filters or any other time I've opened the system up.

 

Don't know about modern cats but on the old Detroit's I can't move the actuator rod by hand. I always hook up air to the canister to see if it was working properly.

 

Do u know where I can get the 6nz flash file for my MBN?

 

Or even where to find injector trims in ET if possible.

 

Sorry I don't know crap about modern cats My experience on Caterpillar is all 3406 and older engines.