1966 Toronado Fuel Tank Vent Configuration

abonino · November 7th, 2008, 09:30 AM

Hello all. New to this forum and had a question.

A few months back, I picked up a fixer upper in Oklahoma City to drive it to Denver (where I live) to put in storage in anticipation of a full restoration.

One of the first things my buddy & I noticed was fuel leaking from the gas tank when we filled it up. Eventually, the leaking went away when the fuel level dropped.

Since getting home, I have done some research on the source of the leak. From looking at the OLDS manual, it shows that a vent hose (or pipe?) loop is supposed to extend through the floor pan in the trunk just behind the passenger side rear wheel well.

After inspecting that area on my vehicle, there is no vent hose in the trunk area, and I couldn't locate a hole or grommet in the tunk floor for this vent loop. I am guessing the fuel is leaking from the vent nipple on top of the tank because no vent hose is connected.

Is anyone familiar with the configuration for the fuel tank vent system? A picture would be great if available.

thanks!
alex
toa #605

2blu442 · November 7th, 2008, 08:24 PM

Hello Alex, welcome to the site!

I believe the vent hose should stick up next to the gas cap with a small nipple in it. I've got a couple 1966 parts cars so I'll try to come up with a photo. John

2blu442 · November 8th, 2008, 11:41 AM

Hello Alex
Here's where the breather comes out near the fill cap. I wonder if you were looking at the vacuum hose for the remote trunk release in your manual. Do you have a Chassis Service Manual? If you don't, I would encourage you to pick one up as they are a weath of information. John

abonino · November 26th, 2008, 07:28 PM

Hey John. Thanks much for taking the time to take and post pictures of the vent.

Yes, I do have a 66 Olds Chassis Manual. The fuel tank vent routing is illustrated in the "FUEL" chapter of the Toronado section at the end of the manual.

Interesting that the actual routing/configuration is quite a bit different than what is shown in the manual. Either that, or the drawing in the manual is representative only.

Do you have any parts available on those parts cars? Im looking for a bunch of stuff.

thanks again!
alex b.

2blu442 · November 26th, 2008, 11:13 PM

Hello Alex
Yes I have parts available for these cars. I'll send you a PM with my email address. Also, I know there's a couple other guys on this site who have early Toro parts for sale, so hopefully we can come up with what you need.

One last thing, I recently removed the rear panel that houses the tail lights on one of the cars and discovered there's two vent hoses that run from the gas tank, not just one.

John

glord · July 22nd, 2009, 01:40 PM

What is the part or material that is stuffed into the hose? Thank you, Gary

November 7th, 2008, 09:30 AM	#1 (permalink)
abonino Junior Member Join Date: Nov 2008 Posts: 3	1966 Toronado Fuel Tank Vent Configuration Hello all. New to this forum and had a question. A few months back, I picked up a fixer upper in Oklahoma City to drive it to Denver (where I live) to put in storage in anticipation of a full restoration. One of the first things my buddy & I noticed was fuel leaking from the gas tank when we filled it up. Eventually, the leaking went away when the fuel level dropped. Since getting home, I have done some research on the source of the leak. From looking at the OLDS manual, it shows that a vent hose (or pipe?) loop is supposed to extend through the floor pan in the trunk just behind the passenger side rear wheel well. After inspecting that area on my vehicle, there is no vent hose in the trunk area, and I couldn't locate a hole or grommet in the tunk floor for this vent loop. I am guessing the fuel is leaking from the vent nipple on top of the tank because no vent hose is connected. Is anyone familiar with the configuration for the fuel tank vent system? A picture would be great if available. thanks! alex toa #605

November 7th, 2008, 08:24 PM	#2 (permalink)
2blu442 Moderator Join Date: Sep 2006 Location: Medford, Oregon Posts: 2,256	1966 Toro gas tank vent Hello Alex, welcome to the site! I believe the vent hose should stick up next to the gas cap with a small nipple in it. I've got a couple 1966 parts cars so I'll try to come up with a photo. John __________________ 1964 Cutlass Factory 4spd 1965 442 4spd 1967 442 Auto 1967 Cutlass Convertible 1967 Cutlass four door daily driver 1968 442 Auto 1969 442 W30 Auto 1970 442 4spd 1971 Cutlass Flat Top Wagon 1973 Che*vy 3/4 Ton 454/TH400 Tow Vehicle Only the tow vehicle is finished!

November 8th, 2008, 11:41 AM	#3 (permalink)
2blu442 Moderator Join Date: Sep 2006 Location: Medford, Oregon Posts: 2,256	Gas tank vent Hello Alex Here's where the breather comes out near the fill cap. I wonder if you were looking at the vacuum hose for the remote trunk release in your manual. Do you have a Chassis Service Manual? If you don't, I would encourage you to pick one up as they are a weath of information. John __________________ 1964 Cutlass Factory 4spd 1965 442 4spd 1967 442 Auto 1967 Cutlass Convertible 1967 Cutlass four door daily driver 1968 442 Auto 1969 442 W30 Auto 1970 442 4spd 1971 Cutlass Flat Top Wagon 1973 Che*vy 3/4 Ton 454/TH400 Tow Vehicle Only the tow vehicle is finished!

November 26th, 2008, 11:13 PM	#5 (permalink)
2blu442 Moderator Join Date: Sep 2006 Location: Medford, Oregon Posts: 2,256	Toro Parts Hello Alex Yes I have parts available for these cars. I'll send you a PM with my email address. Also, I know there's a couple other guys on this site who have early Toro parts for sale, so hopefully we can come up with what you need. One last thing, I recently removed the rear panel that houses the tail lights on one of the cars and discovered there's two vent hoses that run from the gas tank, not just one. John __________________ 1964 Cutlass Factory 4spd 1965 442 4spd 1967 442 Auto 1967 Cutlass Convertible 1967 Cutlass four door daily driver 1968 442 Auto 1969 442 W30 Auto 1970 442 4spd 1971 Cutlass Flat Top Wagon 1973 Che*vy 3/4 Ton 454/TH400 Tow Vehicle Only the tow vehicle is finished!

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

November 26th, 2008, 07:28 PM	#4 (permalink)
abonino Junior Member Join Date: Nov 2008 Posts: 3	Hey John. Thanks much for taking the time to take and post pictures of the vent. Yes, I do have a 66 Olds Chassis Manual. The fuel tank vent routing is illustrated in the "FUEL" chapter of the Toronado section at the end of the manual. Interesting that the actual routing/configuration is quite a bit different than what is shown in the manual. Either that, or the drawing in the manual is representative only. Do you have any parts available on those parts cars? Im looking for a bunch of stuff. thanks again! alex b.

July 22nd, 2009, 01:40 PM	#6 (permalink)
glord Registered User Join Date: Jan 2009 Posts: 11	What is the part or material that is stuffed into the hose? Thank you, Gary

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
1966 Toronado Fuel Tank Vent Configuration	abonino	Toronado	0	November 7th, 2008 09:29 AM
New Fuel Tank	ozzyolds	Parts Wanted	6	July 16th, 2008 07:24 PM
gas tank vent lines?	70-442-455	Other	2	May 22nd, 2008 10:34 PM
Fuel Tank for a '57	olds59	Parts Wanted	1	February 20th, 2008 02:40 PM
1966 oldsmobile toronado gas tank?	komondu	Toronado	2	January 3rd, 2008 09:22 AM