96bulldogpower

Anyone??

Hey guys I need a lot of help from someone knowlegable on mack e-7 engines. Basically I have a 1991 mack CH613 that wiped a cam lobe back in december of 2012, we replaced the cam in january and it went to work for one day and it shut off and never started up again. We towed it back to our shop where it sat from january up until last month when we got around to replacing the injection pump (which we found out had given out) well we timed it all up and had it running for a good while at our yard and it ran amazing so we sent it to work finally about last week... it worked under load for one 8 mile load and it shut off on the roadway and we had to tow it back to our shop. All it will do is crank over and blow heavy white/gray smoke (of diesel) but will not start. I have run out of ideas. Injection pumps and cams are not cheap and I expected this truck to work fine after these parts were replaced. Help guys! Thanks ahead of time for any insight.