Hey everyone I am new to the forums obviously. I recently bought a 2004 f350 6.0 L diesel.
A few weeks after getting it I was driving on the freeway and out of no where the check Gage light turned on and the truck went into emergency power mode. After pulling off the road, I popped the hood and noticed the coolant tank was dry. So I refilled it and it runs fine now.
I am having two issues, the truck will not produce heat at idle unless i gun the truck to 2,500 rpm then the heat turns on but as it idles the heat turns into cold air.
The other issue i am having is the truck is losing coolant, but i have no idea where. I see no leaks around the engine or on the ground.
I took the truck to the dealer where i purchased the truck and they ran a diagnostics saying that injectors 2 and 6 need to be replaced?
I was talking to our diesel mechanic at the company i work for and he thinks that diagnostics is wrong. He believes that it is a cracked head gasket?
The truck runs fine, besides the fact that it leaks coolant and has no heat, engine sounds great and doesn't rattle, and does not sound like it has bad injectors.
I am looking for some advice or someone who is or has experienced the same problem. So i can pin point the correct issue. I've already dumped enough money into this truck, I don't want to spend more money on something that is not the correct issue.
P.S. I am all stock F350 diesel with idiot gauges.