Ford's answers to the NHTSA 6.7 Investigation
There was a request for a link to Ford's answer's to the NHTSA investigation posted on a previous thread, since closed. Here is the link: Ford's NHTSA Answers to the 6.7 investigation This PDF i...
Forum Discussion
I've been following this thread lately and its been an interesting read. I thought about something else that may pose an issue after reading this talk about lubricity possibly playing a key role in the demise of a number of HPFPs.
I was talking to my very good friend the other night that drives a 2011 superduty with the 6.7 diesel. First off I will say he loves his truck and hasn't heard anything about the HPFP issues. This is what got me thinking...He owns a large rental company in mid Michigan and they do events nation-wide. Last week they did a job in Florida, and he had 6 semis drive down and along with his Superduty pulling a gooseneck. After 15 hours of driving, he let one of his employees take over driving the truck while he took a nap. The new driver didn't pay very good attention to fuel levels and when Tom woke up he asked about the fuel situation and the DIC said 1 mile to empty! It was 3 in the morning and every exit they got off at the stations that had diesel were closed. They ened up running the truck out of diesel. They had one of their other trucks find a truck stop and buy some gas cans and they carted diesel back to his truck. (Now I don't know how to prime the system on the 6.7 or if they did it properly) but he said that they went through 20-25 seconds of cranking until it stated back up.
So if lubricity IS the issue, what kind of damage could be done to the HPFP by dry cranking the engine, with no fuel in the HPFP to lubricate it? I know that it isn't good on any diesel to be dry cranked because the diesel is used to lubricate more than just the fuel pump, such as the cylinder walls. So do you think dry cranking could result in the destruction of the cp4.2?
I was talking to my very good friend the other night that drives a 2011 superduty with the 6.7 diesel. First off I will say he loves his truck and hasn't heard anything about the HPFP issues. This is what got me thinking...He owns a large rental company in mid Michigan and they do events nation-wide. Last week they did a job in Florida, and he had 6 semis drive down and along with his Superduty pulling a gooseneck. After 15 hours of driving, he let one of his employees take over driving the truck while he took a nap. The new driver didn't pay very good attention to fuel levels and when Tom woke up he asked about the fuel situation and the DIC said 1 mile to empty! It was 3 in the morning and every exit they got off at the stations that had diesel were closed. They ened up running the truck out of diesel. They had one of their other trucks find a truck stop and buy some gas cans and they carted diesel back to his truck. (Now I don't know how to prime the system on the 6.7 or if they did it properly) but he said that they went through 20-25 seconds of cranking until it stated back up.
So if lubricity IS the issue, what kind of damage could be done to the HPFP by dry cranking the engine, with no fuel in the HPFP to lubricate it? I know that it isn't good on any diesel to be dry cranked because the diesel is used to lubricate more than just the fuel pump, such as the cylinder walls. So do you think dry cranking could result in the destruction of the cp4.2?
