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PV, 120 (Amazon), 1800 General Forum for the Volvo PV, 120 and 1800 cars |
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Fuel system question re: vapor lockViews : 2742 Replies : 18Users Viewing This Thread : |
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Aug 12th, 2011, 23:39 | #1 |
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Fuel system question re: vapor lock
Not sure what it is that's happening but as I drive (then stop)the 66 B20 powered Estate I can see and hear bubbles going through the fuel filter.
I also notice fuel stains on the 1/4 panel from fuel seeping past cap. I loosened cap and heard a woosh. No more bubbles. At first I thought it was from heating up the fuel line as its pretty close to the block and t-stat housing. Now I have to wonder if I should use the vented fuel inlet I took off the 68 Estate parts car. It has a 32/36 Weber carb if that matters. It does start hard after sitting. Ideas? Thanks in advance!
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Aug 13th, 2011, 00:51 | #2 |
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The fuel cap on an estate should be non vented, otherwise fuel will slosh out. However there is a vent hose connected to the filler pipe behind the trim panel. Make sure it isn't blocked. The tank must have an air vent otherwise it'll vacuum lock.
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Aug 13th, 2011, 01:16 | #3 | |
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Also, what is your name? You have been very helpful on this forum, and I appreciate all your comments and posts. Thank you.
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Aug 13th, 2011, 01:49 | #4 | |
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For sure there was on the 68. I just found it and was surprised. I did have the tank and pipe out of the 66 when I resealed the tank.
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Aug 13th, 2011, 10:46 | #5 | |
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Mar 1st, 2012, 18:14 | #6 |
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Just getting around to this vent work. I'll add the vent from the 68 Estate to my 66. I am trying to recall was it a filtered vent or what? In case I dont find the old 68 stuff because of the mess in my garage.
If I mod the 66 filler should I look for a particular vent (filter). Anyone have pictures?
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80 Bertone 5.0 Ford swap underway. http://www.volvoforums.org.uk/showthread.php?t=129720 66 Amazon Estate mild mods in the near future. (http://67-72chevytrucks.com/vboard/s...d.php?t=332836) |
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Mar 1st, 2012, 22:59 | #7 |
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I believe it comes off the filler-tube upwards, and then attaches to a rubber hose, which just goes up, hangs off something or another, then through a hole in the bottom of the rear quarter. Not exactly a simple add-on, I'd be looking for a fuel-cap that vents. Heck, mine might even be a vented one, it is a locking cap. Anyone know if those are vented? I have the original one, painted, and since I won't be living in NY anymore, shouldn't need it. It doesn't look right on an estate anyways.
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Mar 2nd, 2012, 09:49 | #8 |
Amazoniste
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DON'T fit a vented cap to an estate!!!! Every time you go round a right hand corner, fuel will slosh out due to the low angle of the filler pipe*. The factory style vent is simply a fitting on the filler pipe for the rubber hose that is described above. Can't believe it would be difficult to replicate.
*Even with the proper sealed cap, when parked with a full tank & the filler to the kerb, just road camber can be enough for fuel to spill out of the filler cap on a hot day as the air on the other side of the tank expands.
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Mar 3rd, 2012, 20:29 | #9 |
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I happen to be messing about in the boot of my estate and saw this vent pipe, i will be putting the trim back tomorrow but before I do I will take a pic for you
Tom |
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Mar 3rd, 2012, 20:51 | #10 | |
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I cleaned up the 68 vent w/nipple. Found it last night. Its not raining here now so I've been out in the yard. I'd love to see the routing and where the exit hole is as I really think the 66 does not/did not have this. Brad
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80 Bertone 5.0 Ford swap underway. http://www.volvoforums.org.uk/showthread.php?t=129720 66 Amazon Estate mild mods in the near future. (http://67-72chevytrucks.com/vboard/s...d.php?t=332836) |
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