I had the same problem as shawn, but installed a Fuel Safe cell to fix the
problem...I currently have no recovery system. But then again there is no
motor in the car, but when there is it won't have an evaporative system.
Aaron
On Mon, 8 Mar 1999, Shawn Loseke wrote:
>
> Bud,
>
> you might check the entire length of you evaporative line. Mine had come
> loose from it's clips at some point and had melted in two where it made
> contact with the exhaust pipe. When it melted, it closed the openings.
> Which would make you think the line was blocked. Currently, I just have a
> vent line for the fuel tank. No evaporative recovery.
>
> Shawn
> -------------
> Original Text
> From: "Bud Rolofson" <Bud_Rolofson@nps.gov>, on 3/4/1999 9:14 AM:
> Bob Lang and I have been having an offline discusion about carbon canisters
> and
> the evaporative emissions recovery lines/system. I thought I'd share some
> of
> the discussion since others may have the same problem (blocked evap. line
> from
> the fuel tank to the carbon canister) and like me didn't know it.
> Appreciate
> any feedback too, if anyone else has had this problem and how they
> addressed it.
>
>
> Thanks
> Bud
> 71TR6 CC57365
> 71TR6 CC65446
>
> >>>>Bob,
> >>>>The latest is:
>
> RML: If the canister is "full", you might get excessive fumes - after all,
> that's the reason for the canister in the first place. Evaporative
> emission controls.
>
> >>>>Checked the canister and it didn't seem full to me. No excessive fumes,
> it
> didn't feel heavier than it should (gut feeling, nothing to compare it to),
> and
> since the evap. line from the fuel tank was blocked I don't think it's been
> getting vapor laden fumes to fill it up anyhow.
>
> RML: I've heard, but never seen, folks that have a blockage in the can or
> the
> lines to the fuel tank that allow negative pressure to form in the fuel
> tank that is strong enough to cause the tank to collapse.
>
> >>>>I do have a blockage in the evap. line to the tank. I took the line
> off at
> the canister, removed the fuel cap on the tank and tried to blow through
> it.
> Couldn't get any flow whatsoever. I didn't have time last night, but I'm
> going
> to try and blow the line out tonight or Friday. Good thing I asked for a
> compressor for my BD which I know is sitting in the back of my wife's car
> and
> which I'll get today when we do the open the presents thing with my kids.
> My
> plan is to unhook the line from the tank at the filler neck and maybe below
> the
> tank (I think I remember there's a connection there) and then blow the
> lines out
> with compressed air. Once cleared of the blockage (and assuming it's a
> hydrocarbon based blockage) I thought I'd spray some carb cleaner in the
> lines
> and blow that through them to clean them out further. What do you think?
> Anything I should be careful about? I think the nylon evap. lines can take
> some
> light pressure...can't they? Hopefully I won't split the line but if I do
> I
> guess replacing them is not such a bad thing.
>
>
> >>>>I had a fuel pump go out on me a few months ago (lever arm broke at the
> pivot point in the pump) and I'm thinking that the blocked line and hence
> the
> vacuum in the tank caused it to be over worked and contributed to it's
> early
> demise. And again I'm keeping my fingers crossed that this is also the
> source
> of my idle drop problem (e.g. the fuel pump can't overcome the vacuum in
> the
> tank at low RPMs and isn't delivering enough fuel to the carbs causing the
> idle
> to drop 100-200 RPMs below the set idle speed (850-900 until it can pump
> enough
> to recover). Please tell me that makes sense. I have my fingers crossed
> that
> clearing the line will solve that problem.
>
> I may pose this to the list too to see what they think.
>
> >>>>Thanks for the help.
> >>>>Bud
> I
>
>
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