Charcoal Canister
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Elder User
Joined: Jun 2013
Posts: 712
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From: Booneville, Missouri
Charcoal Canister
Hello and good morning.
I have a 87 F150 5.0L E4OD XLT Lariat 2WD Standard Cab.
I recently noticed a hole in the top of the Charcoal Canister which is mounted below the battery with 2 hoses. I can actually see the Charcoal as the hole is approximately 1" square.
Is this the EVAP system and can I just remove it and connect the 2 lines together?
Eventually, I am removing the Air Pump and all of the plumbing but not until I finish my current project.
What effect does this hole have on my engine?
Thank you
Boon
I have a 87 F150 5.0L E4OD XLT Lariat 2WD Standard Cab.
I recently noticed a hole in the top of the Charcoal Canister which is mounted below the battery with 2 hoses. I can actually see the Charcoal as the hole is approximately 1" square.
Is this the EVAP system and can I just remove it and connect the 2 lines together?
Eventually, I am removing the Air Pump and all of the plumbing but not until I finish my current project.
What effect does this hole have on my engine?
Thank you
Boon
Super Moderator
Joined: Apr 2004
Posts: 34,495
Likes: 2,810
As long as you are clear of inspection, and don't mind your gas evaporating, you can eliminate this. Be sure you vent the system at the rear of the vehicle. Just cutting the lines results in venting in or near the engine compartment. BOOM if conditions are just right. (Hot day with winter fuel will give you the correct conditions for example)
Thread Starter
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Elder User
Joined: Jun 2013
Posts: 712
Likes: 0
From: Booneville, Missouri
Charcoal Canister
As long as you are clear of inspection, and don't mind your gas evaporating, you can eliminate this. Be sure you vent the system at the rear of the vehicle. Just cutting the lines results in venting in or near the engine compartment. BOOM if conditions are just right. (Hot day with winter fuel will give you the correct conditions for example)
Thanks for your help!
How about connecting the inlet and outlet hoses together and removing the canister?
Thanks!
Boon
Thread Starter
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Elder User
Joined: Jun 2013
Posts: 712
Likes: 0
From: Booneville, Missouri
Permit
I am not sure what you are referring to when you asked about a permit.
If you mean tags for my truck then yes. I am in a small town; 8,200 which does not require emissions testing only a "safety inspection" every 2 years.
Take care.
Boon
Thread Starter
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Elder User
Joined: Jun 2013
Posts: 712
Likes: 0
From: Booneville, Missouri
Charcoal Canister
As long as you are clear of inspection, and don't mind your gas evaporating, you can eliminate this. Be sure you vent the system at the rear of the vehicle. Just cutting the lines results in venting in or near the engine compartment. BOOM if conditions are just right. (Hot day with winter fuel will give you the correct conditions for example)
It would probably be best, and safe, to go to the boneyard and pull one for a few dollars.
Do you feel that this is affecting my fuel mileage?
Thank you!
Boon
P.S. I think that connecting the 2 hoses together may increase the pressure in the fuel tank.
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Cargo Master
Joined: Jul 2009
Posts: 2,541
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From: Des Moines
If you eliminate the EVAP system then yes, it will affect fuel mileage.
I don't remember who, but someone on this board told me once that the canister is there to prevent liquid fuel from getting sucked up into the intake through the purge valve. The charcoal inside the canister acts as a collector for fuel mist coming through the vent system. The mist collects on the charcoal and then evaporates and is purged when the valve opens. Eliminating the canister could potentially cause liquid fuel to get sucked into the intake through the purge valve which will off set your fuel ratio and have a further effect on your mileage.
If you really want to get creative, you build your own canister with some PVC pipe and a bag of kingsford.
I don't remember who, but someone on this board told me once that the canister is there to prevent liquid fuel from getting sucked up into the intake through the purge valve. The charcoal inside the canister acts as a collector for fuel mist coming through the vent system. The mist collects on the charcoal and then evaporates and is purged when the valve opens. Eliminating the canister could potentially cause liquid fuel to get sucked into the intake through the purge valve which will off set your fuel ratio and have a further effect on your mileage.
If you really want to get creative, you build your own canister with some PVC pipe and a bag of kingsford.
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Thread Starter
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Elder User
Joined: Jun 2013
Posts: 712
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From: Booneville, Missouri
Replacing EVAP System.
If you eliminate the EVAP system then yes, it will affect fuel mileage.
I don't remember who, but someone on this board told me once that the canister is there to prevent liquid fuel from getting sucked up into the intake through the purge valve. The charcoal inside the canister acts as a collector for fuel mist coming through the vent system. The mist collects on the charcoal and then evaporates and is purged when the valve opens. Eliminating the canister could potentially cause liquid fuel to get sucked into the intake through the purge valve which will off set your fuel ratio and have a further effect on your mileage.
If you really want to get creative, you build your own canister with some PVC pipe and a bag of kingsford.
I don't remember who, but someone on this board told me once that the canister is there to prevent liquid fuel from getting sucked up into the intake through the purge valve. The charcoal inside the canister acts as a collector for fuel mist coming through the vent system. The mist collects on the charcoal and then evaporates and is purged when the valve opens. Eliminating the canister could potentially cause liquid fuel to get sucked into the intake through the purge valve which will off set your fuel ratio and have a further effect on your mileage.
If you really want to get creative, you build your own canister with some PVC pipe and a bag of kingsford.
Perhaps the best way is to go to the boneyard and pull a canister.
This will buy me time as I am currently working on a modification; exhaust, and when I complete it I want to remove the AIR Pump and all of the associated plumbing and tackle the relocation of the fuel tank vents; I have 2 tanks.
Thank you!
Boon
Freshman User
Joined: Nov 2013
Posts: 32
Likes: 0
From: western MA
Hello and good morning.
I have a 87 F150 5.0L E4OD XLT Lariat 2WD Standard Cab.
I recently noticed a hole in the top of the Charcoal Canister which is mounted below the battery with 2 hoses. I can actually see the Charcoal as the hole is approximately 1" square.
Is this the EVAP system and can I just remove it and connect the 2 lines together?
Eventually, I am removing the Air Pump and all of the plumbing but not until I finish my current project.
What effect does this hole have on my engine?
Thank you
Boon
I have a 87 F150 5.0L E4OD XLT Lariat 2WD Standard Cab.
I recently noticed a hole in the top of the Charcoal Canister which is mounted below the battery with 2 hoses. I can actually see the Charcoal as the hole is approximately 1" square.
Is this the EVAP system and can I just remove it and connect the 2 lines together?
Eventually, I am removing the Air Pump and all of the plumbing but not until I finish my current project.
What effect does this hole have on my engine?
Thank you
Boon
You are looking at slightly lower MPGS and longer time warmer up in the winter.
Its been my conviction slight lower MPGS longer warm up time and Trouble getting it to pass emissions...
Thread Starter
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Elder User
Joined: Jun 2013
Posts: 712
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From: Booneville, Missouri
Hello and good morning Markjr390.
I am installing a new exhaust system from the shorty headers with y-pipe into a Hi-Flow Catalytic Converter without air tubing into a Enco 12" Glass Pack to a Stainless Steel Tip; all 2.5".
I thought that I would gain mpg's without the Air Pump?
Thanks!
Boon
I am installing a new exhaust system from the shorty headers with y-pipe into a Hi-Flow Catalytic Converter without air tubing into a Enco 12" Glass Pack to a Stainless Steel Tip; all 2.5".
I thought that I would gain mpg's without the Air Pump?
Thanks!
Boon
Freshman User
Joined: Nov 2013
Posts: 32
Likes: 0
From: western MA
Hello and good morning Markjr390.
I am installing a new exhaust system from the shorty headers with y-pipe into a Hi-Flow Catalytic Converter without air tubing into a Enco 12" Glass Pack to a Stainless Steel Tip; all 2.5".
I thought that I would gain mpg's without the Air Pump?
Thanks!
Boon
I am installing a new exhaust system from the shorty headers with y-pipe into a Hi-Flow Catalytic Converter without air tubing into a Enco 12" Glass Pack to a Stainless Steel Tip; all 2.5".
I thought that I would gain mpg's without the Air Pump?
Thanks!
Boon
You could but would half to tune the computer to eliminate the EGR functions.
I haven't done it myself just theoretical response. You will Gain MPGS from the exhaust but not from the EGR Delete unless the EGR system is malfunctioning in which you wont lose anything. The EGR is in use at idle and at constant cruise speed, two times when the MPGS matter. So its a toss up for me, My EGR system is working vs trying a full delete and having the check engine light be constantly on.
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