Engine Running Rough and Dying out at Stop

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Oct 13, 2014 | 11:52 AM

#16

JB1ack

Junior Member

Joined: Oct 2014

Posts: 2

Likes: 0

Quote:

Originally Posted by slo5oh

When it runs rough at idle can you do a quick stab on the gas and clear it up? Then sometimes when it drops back down it's smooth, other times it's rough again? I don't wish this on anyone, but you might want to start reading about the camphasers.

Im leaning more towards a vacuum leak. I replaced the MAF this weekend. It still idles rough and will die If you rev it up and let off the gas. I also started to have gas fumes come through the vents. I read on another forum that gas fumes with the rough? dying idle is the MAF. But I swapped that out and no changes. Any ideas? its a 2006 f150 5.4L. Thanks

Oct 13, 2014 | 11:57 AM

#17

glc

Senior Member

Joined: Dec 2006

Posts: 43,538

Likes: 817

From: Joplin MO

Gas fumes could be leaky/stuck injectors.

Oct 13, 2014 | 04:12 PM

#18

slo5oh

Senior Member

Joined: May 2011

Posts: 145

Likes: 1

Quote:

Originally Posted by JB1ack

I had gas fumes coming into my 06 truck about a week after the dealer put a new engine in it. They found a broken fuel pressure regulator, actually I think they used the term "cracked".

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