Hard/long start

Tiny
MARSHMALLOWZZZ
  • MEMBER
  • 2002 FORD F-150
  • 4.6L
  • V8
  • 2WD
  • AUTOMATIC
  • 165,000 MILES
Since I already know it takes forever to start my truck, this is what I do everyday I use the truck. (I live in Houston, TX so weather doesn’t apply lol)

The first time I go to start the truck everyday after it’s been sitting for hours overnight, I turn the key forward to where just the electronics come on and to get the fuel pumping (not the starter or engine) and I wait about 5 seconds to turn the key the rest of the way (all the way forward) and the truck starts right up just fine every time I do this “1st start of the day process”.

But anytime I go somewhere (store, shop, etc.) I turn the truck off and when I come back shortly after (10 - 20 minutes, maybe up to an hour) I’ve tried turning on the truck the same way I do when I first start it everyday by waiting 5 seconds and it takes forever to start.

But I have also tried turning on the truck “regularly” (by just turning the key all the way forward without waiting 5 seconds as well) and that way also takes forever to start.

I’ve put in a brand new high performance air filter (SPECTRE).

I’ve sprayed the MAF (Mass Air Flow Sensor) with CRC MAF cleaner. Didn’t wipe on/off the sensor. Never touched it. Let it sit and dry before reconnecting

I’ve take the throttle body off and cleaned it off/out with CRC throttle body cleaner like brand new and replaced the spacer.

I’ve replaced the Serpentine Belt.

I’ve replaced the fuel filter.



I’m getting ready to change the spark plugs and replace the battery.



Can you guys tell me what exactly is causing this issue and how to fix it please? If you don’t know for sure, can you tell me what all to check/replace and I’ll do my best please? If y’all want videos of what I do/what goes on when trying to start the truck just let me know!



I love your YouTube videos! Ryan helped me with most of what I’ve done already so thank you very much!
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Monday, February 10th, 2020 AT 10:38 PM

5 Replies

Tiny
JOETECHPRO
  • EXPERT
Hey MARSHMALLOWZZZ,

The first thing to do will be to check whether the fuel pressure is bleeding back to the tank or leaking off.

The fuel pressure should be retained when the engine is shut off, if you attach the pressure gauge and run the engine you should have the pressure shown in the specs attached below (28-50PSI)

When you shut it down this pressure should hold.

If the pressure drops right off to zero you have a leak somewhere.

Please carry out this test and let us know the result.

Regards, Joe
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Monday, February 10th, 2020 AT 10:58 PM
Tiny
MARSHMALLOWZZZ
  • MEMBER
Thank you very much for your very fast answer Joe! (20 minutes at 1:00 am Texas time is impressive) lol. I m going to search the next 2 hours for different videos on it but would you guys happen to have a link to a video of how to check it and fix it if needed?
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Monday, February 10th, 2020 AT 11:09 PM
Tiny
MARSHMALLOWZZZ
  • MEMBER
Found it!
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Monday, February 10th, 2020 AT 11:46 PM
Tiny
JOETECHPRO
  • EXPERT
Hey MARSHMALLOWZZZ,

No problem we aim to get back to people as fast as we can.

Let us know what you found, it will help people who are experiencing the same issue.

Regards, Joe
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Tuesday, February 11th, 2020 AT 8:37 AM
Tiny
RYAN
  • ADMIN
Hey Marshmallowzzz,

I'm Ryan from the 2CarPros YouTube channel. I just wanted to say thank you so much for watching! It is always such a treat for me to read that I helped someone through my videos.

Sincerely,
Ryan
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Tuesday, February 11th, 2020 AT 5:39 PM

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