2004 Ford Ranger EVAP CANNISTER

MHEADRICK

MEMBER
2004 FORD RANGER
6 CYL
2WD
AUTOMATIC
80,000 MILES

I HIRED MY BROTHER TO CHANGE OIL. HE TRIED TO CHANGE FILTER FROM TOP SIDE AND BROKE A HOSE CONNECTION OFF OF A PART. IT HAS 2 CONNECTIONS ON IT 1 GOES TO THE CANNISTER AND THE OTHER GOES TO THE VALVE COVER THIS SOMETHING TO DO WITH EMMISSIONS AND THER IS A TAG THAT SAYS THERE SHOULD BE 1 LB OF PRESSURE IN THIS SYSTEM WITH A VALVE CORE LOOKING THING ON IT WHAT IS THIS AND WHAT DOES IT DO. THE TRUCK RUNS FINE WITHOUT IT BUT AM I DOING ANY DAMAGE RUNNING IT LIKE THAT?

3 Replies

JACOBANDNICKOLAS

MECHANIC
108,289 POSTS

The item sounds like a check port for the EVAP system. It is used to force fog into the EVAP system to check for leaks. The 1 PSI is the max the system can hold. What will eventually happen is the check engine light will come on indicating a leak in the system. It's just like leaving the gas cap off. It will need repaired for emission inspection.

Let me know if you have other questions.

Joe

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Tuesday, October 27th, 2009 AT 8:25 AM

MHEADRICK

MEMBER
5 POSTS

I GLUED THE BROKEN PIECE BACK ON. NOW CAN I REINSTALL THE PART AND RESET THE COMPUTER. DO I NEED TO PRESSURE UP THE SYSTEM OR WILL IT DO IT ON ITS OWN?

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Tuesday, October 27th, 2009 AT 9:11 AM

JACOBANDNICKOLAS

MECHANIC
108,289 POSTS

It will do it itself. Just have the computer reset or if you can, do it yourself. If you sealed it properly, the light should stay off.

Let me know if you have other questions.

Joe

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Tuesday, October 27th, 2009 AT 10:12 AM