Keith Browning

Thats what I am saying. There has to be a problem with the HPFP for this thing to be showing that big of a swing from pressure to vacuum. What seems like a no brainer should require at least a couple of brains agreeing on the cause before I go unbolting stuff. I also have uploaded a better video and changed the post.

You just need to fiddle with the settings. I just threw this video up to try it out... I'll probably keep using it. I could put videos on my server but they wont be streaming now will you be able to post them in a forum post. If I use a video in a presentation or an article I convert it to a Shockwave file .swf and embed it.

At the moment the truck is gone - this customer is a real fucking pain in the ass about leaving the truck and he knows the owner of my dealership so... we all know how that goes. So I have not gotten any further with this. I really wanted to speak with the hot line as to what tests to perform from here as this as far as I am concerned is a big red flag in and of itself. BTW: this was my first You Tube video so bear with me... I made some changes and the video should be public now. I will actually be deleting it soon and replacing it with a slightly longer take that has a DTS watermark on it.

A 2008 F550 - customer complains about intermittent check engine light accompanied by low power and smoke out the tailpipe. If he shuts the truck off and re-starts it is fine but eventually it repeats. All pre-checks and inspections are good. I got as far as retrieving DTC P0087 from memory, KOEO and KOER both pass. Then I checked the fuel supply pressure and saw something I never have before. The fuel pressure at the test port is wildly erratic ranging from 20" vacuum to 35+ PSI at idle. See the video. At the moment I had to stop - customer took the truck (yes, that is right) and FMC Dealer has bee down for two damn days not to mention the Hot_Line is closed for the holiday until the 5th. Apparently the pump has a problem... I thought I would share this and take some thoughts on this.

I will second that advice Mikey!

I am not overly confident with this to let a truck roll out with but it is good to know about and consider:

I think that is why this seems so absurd. Many of these modifications seemingly only serve to long-cock their buddies. From the "walk around" in the video it does look like this truck is a driver... However your technical input does explain why someone might do this for a good reason... if they actually have one. Label me a pessimist you may.

All I am going to say is that now I can identify the sound that is made when you don't install the o-ring behind the fuel pressure regulator seat.

I agree too and that exact though crossed my mind as we ran the engine. I didn't get to drive it though.

Aren't your instructors using at least a photo copied Coffee Table book? We couldn't keep ours but we all had one... in black and white. How do you fail an open book test?

I have a cash core that is bad. I am waiting for an opportunity to stick it on a truck and make some screen shots ff the PID's, then re-solder it and make another screen shot...

We discussed this about 1-1/2 years ago in THIS TOPIC with pictures!

I check in the morning... these must have been posted later in the day. Don't you find it ironic that the quieter these engines get the more noises we discover!

DOH! I hate it when I don't remember shit right. The DTC chart isn't in the current book I have posted. I did see the DTC chart in the PCED though. Anybody taking the class this week? Ask if the code is permanent.

CLICK HERE and scroll to the bottom of the page. You will find the 2011 Coffee Table Book on the bottom right. Hillbillies!

This is for the NEW ENGINE... 2011. Co to the Coffee Table Book and look at the DTC chart in the back.

P167F - Non-OEM Calibration Detected I thought I heard this DTC was a permanent code but I cannot find any documentation actually stating this. The DTC description in the PCED doesen't state this either. Maybe I missed it or I am hearing things.

Alright, I am still trying to put an article together and the more I look at the system, the more questions I have about the thermostat issue. The only place I can find mention of the bypass is in the Coffee Table book, page 17: ___________________________________________________________________ A dual thermostat system is used to control the flow of return coolant to the radiator. If the thermostats are open, coolant flows to the radiator to be cooled. The bottom thermostat has a bypass circuit that will allow coolant to return to the pump when the thermostats are closed (speeding engine warm up). ___________________________________________________________________ Correct me if this is wrong: the bypass is OPEN when the engine is cold allowing coolant to recirculate back to the pump causing the coolant to heat up faster. We can conclude that when the coolant warms up the bypass valve closes preventing coolant recirculation and allowing full coolant flow to the radiator when the thermostats open. If the valve is Hyperextended effectively meaning that the valve is stuck closed, shouldn't we conclude that the symptoms would simply be longer warm up times rather than over heating and radiator failures? The more I think about this the more I am convinced that the bypass has less to do with this condition than the actual "thermostats." Maybe I need to hear an explanation directly from someone at Ford. Unfortunately all you see in print is the word hyperextended being tossed around. I suspect that the same failure that causes the bypass to stay extended also affects the main valve but you don't see the effects because the main valve is stopped by the seat. Essentially the condition that causes the hyper extension is preventing the valves to open at the proper temperature... I think I am losing it!

WOW! You got booze and MEAT?

Free pizza. Must be something they teach management. Over the years I have come to the conclusion that these types of meetings are usually never positive.

Now that I think about this there are days I wish I was not allowed to open hoods!

This is looking more like a bitch list!

Read THIS topic then read THIS one!

Golly Dwayne! I would certainly consider working with Jim a spiff at the very least!