Joe2007

What’s the best way to check for boost leaks?

What are you talking about Vmac?

No faults. 10 speed. It’s got 2 110 gal tanks. But I have one of them turned off have not used it for a couple years.

I changed both of them.

Hey guys I have a 1990 Mack ch600 with a E7-300 I drive the truck just about everyday. I’ve started have some trouble with it but can’t figure it out. It starts and runs good not smoking out anything. The trouble I’m having is it’s got no power. Same routs everyday the hills I was climbing at 30mph I’m now climbing around 18 or 19mph and it’s the same way loaded or unloaded.