1974 02: Gas Smell in the trunk. Connect these two?

[kaptanoglu]

You'll also need the small spring clip that holds it in the bracket.

 

I suspect that I have an issue with my vapor tank as well.  While I am fairly mechanically inclined, I could not figure out the "right way" to get the spring clip out so that I can better inspect the tank and connections.

 

Can one of you share the trick?

 

TIA

[John_in_VA]

The bow of the clip should face the tank, holding it into the bracket.  The ends of the clip are bent.  Just free one of the ends from the cut-outs in the bracket - might need some needle-nosed pliers.

 

I suspect that I have an issue with my vapor tank as well.  While I am fairly mechanically inclined, I could not figure out the "right way" to get the spring clip out so that I can better inspect the tank and connections

[kaptanoglu]

The bow of the clip should face the tank, holding it into the bracket.  The ends of the clip are bent.  Just free one of the ends from the cut-outs in the bracket - might need some needle-nosed pliers.

 

I guess I just forgot the First Rule of Brute Force - "If it's not working, you're not using enough of it"

 

Thanks

[thinksound_mike]

I didn't even have a clip. My tank is held in with velcro on the underside of the parcel shelf. So if you end up breaking your clip, there's always velcro!

[Nuthatch]

For anyone interested in replacing the charcoal canister: the part number is Purolator 00 701. I found the best price on the part from this source, and ordered one.

 

http://www.bonanza.com

 

What I received was a new/old stock canister from the 1970s, and the seller was unaware of the actual application until I informed him; other 70s vehicles (including Porsches) likely used these as well. As most of you know, hookup of the canister is straightforward: the inlet accepts the line from the vapor tank in the trunk, and the outlet goes to the air cleaner or intake manifold. 

 

If you are experiencing a faint but persistent fuel smell in the engine bay, the source may well be a charcoal canister whose odor-absorbing properties were long ago exhausted. 

[Conserv]

For anyone interested in replacing the charcoal canister: the part number is Purolator 00 701. I found the best price on the part from this source, and ordered one.

=1&q[search_term]=purolator%20type%2000%20701%2000%20701%20canister%20filter%201978sc%2078sc%20brand%20new]http://www.bonanza.com

What I received was a new/old stock canister from the 1970s, and the seller was unaware of the actual application until I informed him; other 70s vehicles (including Porsches) likely used these as well. As most of you know, hookup of the canister is straightforward: the inlet accepts the line from the vapor tank in the trunk, and the outlet goes to the air cleaner or intake manifold.

If you are experiencing a faint but persistent fuel smell in the engine bay, the source may well be a charcoal canister whose odor-absorbing properties were long ago exhausted.

Great find! They're still available from BMW, part number 16121108926:

http://realoem.com/bmw/enUS/showparts?id=2215-USA-04-1976-114-BMW-2002&diagId=16_0386

But their current price is $130-ish, versus $80 from your source. I'm particularly smarting, however, as I replaced my '76s unit three years ago when the BMW price was $250-ish! It seemed like the only game in town at that time!

Thanks and regards,

Steve

Edited July 22, 2015 by Conserv

['76mintgrün'02]

The canister has been removed from my car.  The vent line is just open in the engine bay.  I don't really notice a gas smell.  I do use the fuel return line, so the vent is actually breathing.  I wonder why the canister is needed, if the air coming out of it was fed into the air filter/carb.  Who cares if it smells, if it is being burned again?  In fact, having more fuel in the fumes would be a good thing... no?

[Conserv]

The canister has been removed from my car.  The vent line is just open in the engine bay.  I don't really notice a gas smell.  I do use the fuel return line, so the vent is actually breathing.  I wonder why the canister is needed, if the air coming out of it was fed into the air filter/carb.  Who cares if it smells, if it is being burned again?  In fact, having more fuel in the fumes would be a good thing... no?

It was done to reduce atmospheric emissions, which don't always have noticeable smells. But for some reason, the tii's -- at least '72 and '73 -- didn't need them: the hose from the trunk-mounted tank went straight into the airbox. Do I know why? Haven't a clue!

Regards,

Steve

[MrSharky]

Digging up old threads... does anyone know offhand the size of that vent tubing?? 

 

TIA, 

Matt

[joe solomito]

Hi Mike,

My Son just purchased a 76 2002 and lives in .....Brooklyn, wow what are the chances. Can you recommend a 

reputable mechanic for him.

Thanks

Joe

[jgerock]

On 4/13/2016 at 5:36 PM, MrSharky said:

Digging up old threads... does anyone know offhand the size of that vent tubing?? 

 

TIA, 

Matt

Realoem quick lookup under fuel supply  - this was a generic 1972 2002.

 

Looks like the vent hose is 11mm O.D. x 6mm I.D. (not the tubing)

 

https://www.realoem.com/bmw/enUS/showparts?id=ST12-USA-03-1972-114-BMW-2002&diagId=16_0386

 

Edited February 21, 2017 by jgerock

[tomjensen]

Is the vapor tank supposed to have anything in it?


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[thinksound_mike]

Thread from the dead!

 

Nope. It's empty. It's just supposed to keep the vapors from escaping into the trunk or the interior of the car. I ended up ditching my vapor tank and routed the line to the spare tire well like the original European-delivery cars had.

['76mintgrün'02]

I too ditched the vapor tank, but ran the line directly into the air cleaner, as designed, minus the charcoal filter... as well.  Burn those precious fumes. 

 

little Weber-filter adapter

on the original nipple now

 

[tomjensen]

Since the fuel lines are plastic, do you use hose clamps? I don’t see any and I imagine you could crush them easily.


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