6.0 no start when Hot and some other ?'s

[roccodart440]

I've had this truck for about a week. IT started at about 13 above 0 and it's been colder than that here so i've been plugging in. It starts and runs fine.

TODAY I drove it almost 2 hours straight on the NYS Thruway at 75 average. When I pulled off the interstate and shut it off it started really hard. Had to put my foot to the floor while cranking. Once it cooled down it fired up quick and easy. After the drive home it won't start. Waiting for it to cool down with my fingers crossed.

What do you guys think is the issue here?

EGR is deleted. NO cat, no muffler.

[roccodart440]

Another thing is this thing seems to run king=d of cold. THe temp gauge is usually at the very low end of the normal operating range no matter how long I run it for.

[kaya@bernhausen]

probably an hpo leak. you'll need a monitor on it when the no start is occurring. view engine icp while cranking. if it's below 550psi cranking, there is most likely a leak.

does cabin heat work well? or is it cool as well? if it is cool, replace the thermostat

[Deer Creek]

When my ICP went out it did the exact same thing!

[roccodart440]

Originally Posted by kaya@bernhausen

probably an hpo leak. you'll need a monitor on it when the no start is occurring. view engine icp while cranking. if it's below 550psi cranking, there is most likely a leak.

does cabin heat work well? or is it cool as well? if it is cool, replace the thermostat

I am going to run it hard for about an hour down the interstate and head to my mechanics for a scan and to replicate it at his shop.

It has heat in the cab. The gauge just usually hangs at the low end of the normall range.

The truck is getting unfreindly on colder (under 25) starts when not plugged in. Truck also feels like it is shaking whewn going down the road cold. Engine shake almost like it tries to shut of for a split second then kicks back in. Kind of bucks a little.

Really not likeing the 6.0. Miss my 7.3. That thing was bullet proof and had way more power.

Also, how much boost do these make in stock trim?