Fuel related issue

How-to's and repair secrets for your 4WD can be found here. Have a question? Ask it in here!
Post Reply
User avatar
NWMO
Highest Ranking Member
Posts: 902
Joined: Wed May 20, 2015 1:08 pm

Fuel related issue

Post by NWMO » Thu Jan 09, 2020 5:36 pm

Hello all,

Just as I was coming into town this evening, I heard an odd noise and the car started to miss/run rough. When I got home I popped the hood and took a look. If I am correct, it looks like the rubber hose between the evap cannister and the “outlet vent control valve” has melted. Raw fuel is on top of the evap cannister and is leaking from the lower part of the carburetor as well. Here are some pics.
AD7D7A43-FA9E-4ED6-89B4-AD8705726D69.jpeg
4951AF16-7080-4D2A-AE8C-7546944ED3B0.jpeg

TIA for suggestions. Sorry for not digging more, but I wanted to get something posted before dinner.

Chris
You do not have the required permissions to view the files attached to this post.
Psalm 37:4 "Delight yourself in the Lord and he will give you the desires of your heart"

In remembrance of my friend ARCHINSTL:

T4WD augury?
"Oh, do not ask, 'What is it?' Let us go and make our visit."
T.S. Eliot - "The Love Song of J. Alfred Prufrock"

"Now and then we had a hope that, if we lived and were good, God would permit us to be pirates."
Mark Twain

User avatar
NWMO
Highest Ranking Member
Posts: 902
Joined: Wed May 20, 2015 1:08 pm

Re: Fuel related issue

Post by NWMO » Thu Jan 09, 2020 6:35 pm

I should add that after parking, carrying my lunch box in and retrieving a flashlight, I removed the air filter and looked down the carb. The “upper” jet in the carb was burping fuel minutes after being turned off. Based on the carb leaking, I assume it was being flooded while running?

Chris
Psalm 37:4 "Delight yourself in the Lord and he will give you the desires of your heart"

In remembrance of my friend ARCHINSTL:

T4WD augury?
"Oh, do not ask, 'What is it?' Let us go and make our visit."
T.S. Eliot - "The Love Song of J. Alfred Prufrock"

"Now and then we had a hope that, if we lived and were good, God would permit us to be pirates."
Mark Twain

User avatar
NWMO
Highest Ranking Member
Posts: 902
Joined: Wed May 20, 2015 1:08 pm

Re: Fuel related issue

Post by NWMO » Thu Jan 09, 2020 6:49 pm

Here are a couple of “old” posts that reference similar challenges:

viewtopic.php?f=4&t=11008&p=81653&hilit ... ted#p81653

viewtopic.php?f=4&t=4309&p=31874&hilit= ... ted#p31874
Psalm 37:4 "Delight yourself in the Lord and he will give you the desires of your heart"

In remembrance of my friend ARCHINSTL:

T4WD augury?
"Oh, do not ask, 'What is it?' Let us go and make our visit."
T.S. Eliot - "The Love Song of J. Alfred Prufrock"

"Now and then we had a hope that, if we lived and were good, God would permit us to be pirates."
Mark Twain

User avatar
NWMO
Highest Ranking Member
Posts: 902
Joined: Wed May 20, 2015 1:08 pm

Re: Fuel related issue

Post by NWMO » Thu Jan 09, 2020 10:34 pm

Alrighty,

I got the evap cannister, VSV & EVSV off. The VSV does not appear to be functioning. I tried plugging the two pieces back in, but it was still idling very rough. Called it a night.

I’m going to check timing next and keep plugging away.

Chris
Psalm 37:4 "Delight yourself in the Lord and he will give you the desires of your heart"

In remembrance of my friend ARCHINSTL:

T4WD augury?
"Oh, do not ask, 'What is it?' Let us go and make our visit."
T.S. Eliot - "The Love Song of J. Alfred Prufrock"

"Now and then we had a hope that, if we lived and were good, God would permit us to be pirates."
Mark Twain

The Professor
Highest Ranking Member
Posts: 579
Joined: Wed May 12, 2010 6:38 pm
My tercel:: 1987 Tercel SR5 4WD wagon
Location: Western Washington
Contact:

Re: Fuel related issue

Post by The Professor » Fri Jan 10, 2020 8:12 am

NWMO wrote:
Thu Jan 09, 2020 10:34 pm
The VSV does not appear to be functioning.
I've got a brand new VSV if you want a replacement.
1975 Subaru SuperStar wagon
1984 Subaru Turbo-Traction wagon & Turbo-Traction hardtop
1987 Subaru RX 3-door, x2
1987 Subaru RX Type-RA 3-door
1987 Toyota Tercel SR5 wagon
1999 Subaru Forester S
2002 Subaru WRX sedan
2019 Subaru Outback 2.5i Limited

User avatar
NWMO
Highest Ranking Member
Posts: 902
Joined: Wed May 20, 2015 1:08 pm

Re: Fuel related issue

Post by NWMO » Sun Jan 12, 2020 7:23 pm

Hello all,

So, I have checked the VSV as well as the outer vent control valve and both are working well. I also checked the VSV off my parts car and it tested good as well. I have tried to test the evap cannister by blowing through it and while I can blow a little through, it is very difficult. Hopefully using the air compressor as indicated in the FSM will help.

My mistake in the initial test of the VSV was plugging it back in for the test. However, I neglected to ground the VSV and I am confident that invalidated the initial test.
You do not have the required permissions to view the files attached to this post.
Psalm 37:4 "Delight yourself in the Lord and he will give you the desires of your heart"

In remembrance of my friend ARCHINSTL:

T4WD augury?
"Oh, do not ask, 'What is it?' Let us go and make our visit."
T.S. Eliot - "The Love Song of J. Alfred Prufrock"

"Now and then we had a hope that, if we lived and were good, God would permit us to be pirates."
Mark Twain

User avatar
NWMO
Highest Ranking Member
Posts: 902
Joined: Wed May 20, 2015 1:08 pm

Re: Fuel related issue

Post by NWMO » Mon Jan 13, 2020 10:25 pm

I checked both VSVs with the ohm meter and they are within spec. Hoping to blow out the canister tomorrow and get ready to put back together.

Chris
Psalm 37:4 "Delight yourself in the Lord and he will give you the desires of your heart"

In remembrance of my friend ARCHINSTL:

T4WD augury?
"Oh, do not ask, 'What is it?' Let us go and make our visit."
T.S. Eliot - "The Love Song of J. Alfred Prufrock"

"Now and then we had a hope that, if we lived and were good, God would permit us to be pirates."
Mark Twain

Post Reply