kevgibbs

Can anybody give me somewhat of a detailed history of the E7 engine? I'm more concerned about how the fuel system on the engine changed over time. I'm aware that a full mechanical engine was made and that a ECM controlled engine was made. However I've recently found another model for sale that uses the mechanical fuel injection pump but utilizes what looks like a electronic stepping motor to run the throttle. We have a full mechanical E7 in our fleet and we're convinced that it is the best engine to ever roll off of Macks assembly line. I would just like some history on how the E7 changed over time and what models proved to be the most powerful and service free over time. 

How many total miles were on the truck/engine when you had the camshaft replaced? 

9 hours ago, JoeH said:

Hours on the tachometer?

I had an 01 etech 400 for a year or two, I loved the truck. Super easy to diagnose engine codes via blink code, no emissions crap like def and egr. 

My mechanical e7-350 has 19,000 hours and 253k miles, still runs like a champ, no idea how much longer I'll get out of the injection pump and injectors.  

Does this truck you're looking at have any egr emissions crap?

Not that I am aware of, the seller said that it did not have any egr garbage. I have not personally seen the truck, it is located about 600 miles away from me. The truck has 245,000 original miles. 

2 hours ago, Dirtymilkman said:

Miles? Hours? Past history? Main thing is to check nitrates in the antifreeze. I'm also a big believer in valve set and injectors every 250,000 miles. I've had quite a few E7's and worst thing I ever had happen was an injector tip split. 

The truck has 245,000 original miles. It has been in the oil field industry in the south. Mack 18-speed with Mack Axles. Super clean and straight truck from what I can tell

I am looking to buy a 2003 CH613. The seller claims that the truck has a 460 E-tech engine in it. I know virtually nothing about the electronic Mack engines and was wondering what issues (if any) you guys have had from these engines? Also how do these engines perform compared to the mechanical E7? We currently have a fleet of five trucks, only one of which is a Mack with a mechanical E7 in it and it will run circles around our 450hp Cats.