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Will this part need to be relearned?

My 2001 5.4 f250 and my 2010 4.6 f150 both randomly stall. The f150 4.6 has a slow start, even worse in recent days. Could this evap purge valve cause a truck to stall in slow speeds?

This was a great help for me, thank you. What was funny was I caught myself nodding along with you while you were talking. LOL

Thanks. Excellent video. I have a better understanding of the theory of operation of these diesels now.

Someone said my truck sounds like a Cummins starting up, I have a video of it too on here if yall wanna see if you got the same issue

Awesome info, I’m working on a 04 f150 and the fuel pump has been replaced and module also and still hardstart long crank times. I’m going to check these pids and see if anything looks off. Thanks for the info!

Change fuel pump and good to go.

Hey man, appreciate the video and thorough procedure documenting. I'm failing to build pressure have extended crank to start like over 30 seconds. Once it's idling desired ICP PSI is 800 but I'm only getting 480 to 500. Clearly there's a leak somewhere. IPR air test reveals no leaks. ICP air test with IPR blocked by a ball valve on the IPR test fitting reveals no leaks until after about 5 minutes when gurgling and air can be heard through a listening device when placed inside of the oil filter housing. I've read that the only time you'll hear air or oil gurgling at the oil filter housing is when you have an internal leak within the hpop. I pulled the h pop and bench tested it only to find zero leaks whatsoever. Anybody have ideas on what could be going on here?

@jakebuilt3581 Hey Jake - HELP!! I have a 2007 f150 4.6L. Cranks a long time before starting and I can't figure it out!!! So far, I replaced the Starter, Oxygen Sensors, Purge Valve on firewall, MAF sensor, some sensor on the fuel rail and the spark plugs and coil overs are less than a year old (less than 20K miles). A reputable shop has not been able to help me either. Very frustrated. What else do you suggest I might check or replace? I have an Evap canister coming in 2 days for my next attempt.

Thank you

Same problem and purge valve was replaced. Sometimes no start cold. Fighting this problem over a year. I believe the purge valve is to purge the canister of fuel vapor from tank. Remove fuse 27 and truck fires right up a few seconds. Maybe a bad new purge valve. No codes found.

Hey man I have no cam sync. Replaced cam sensor with motorcraft still no sync. Other numbers good. Any ideas?

Thank you brother. You figured something out for me.

Should the injectors each (all) leak a small amount of air?

You said you think this should solve it, but never tell us or show us of it did, brilliant.

I have a 94 f150 5.0 that is very hard to start under 40 degrees Fahrenheit also notice the coolant gage reads low all the time now don't know if related. Any ideas what would cause this

What year

What scanner was u using in this video

Why go thru the computer stuff when most people watching thus DONT HAVE IT?

He said it's got a long crank😆

I have a 2009 5.4 f150. The fuel pump fuse shot out under the hood. It would sputter starting and was also sucking the fuel tank in like it had suction inside it. I have relocated that fuse, replaced the starter, replaced the fuel pump, replaced the evap purge valve. The tank no longer sucks in and it runs perfectly once cranked. The temperature has been back in the 60s this week and it sputters to start. Turns over great but acts like it is flooded. What else could it be? I hear of a cannister purge valve? Any other ideas?

Hey thanks for the awesome video! Can you recommend any good meters to see more data but won’t break the bank? I’ve got a basic $30 OBD meter but am a rocket data analyst by day and would love to be able to see as much data I can get my hands on for my f-150 (and at the same time justify the price to my wife haha)

Great video your like 👍 and a new subscriber

Excellent Problem Solving 💪🏻💪🏻💪🏻

Great video bud

Do you see this issue on the 6.2l gas engine in the F250? I have a 2018 that only sometimes takes a long time to start. Maybe once every 10-15 starts. More often on first startup but not always. Thanks

Great video thanks

Excellent!

Autel diagnostic tools FTW. Great vid, Stay gold.

E-85 is 85 percent ethanol. E-15 is 15 percent ethanol my man

I got the 10 5.4 3v and it has a rough long stumbling start when it sits over night. Inside or outside. Warm or cold. (much worse in cold temps)i changed my maf sensor but that didn't help. And it runs great after I start it. No misfires. No lack of power. Just at the first start up of the day. I did disconnect my purge valve and started my engine and I could feel it lightly Sucking at my finger if I placed it unto my purge valve outlet going to fuel tank. So if it is my purge valve. Why wouldn't it have a hard start everytime. Instead of just the first startup of the day?? It only has a rough rich bad start at first start of the day. After that it starts great..

I have a solution. Get a Chevy.

So did the new purge valve fixed it?

Where is your shop? Can I come to your shop?

So where is this mythical purge valve?? This didn't tell me shit. I have these exact symptoms on my 2010 5.4. What the hell was wrong with points and condensers and carbs?? F this shit. I'm just going to build me another old school truck without all this bullshit.