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Vehicle Maintenance and Repairs Tips for maintaining your car, boat, and all things mechanical.

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Old 08-11-2012, 05:38 AM   #1
SarahS
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Default Vapor Lock

My beloved CarCar, a '73 SuperBeetle, is having vapor lock daily. Does anyone know, is this dangerous to the engine or carburetor? I have friends coming over this morning to help me ID the fuel pump (I look at the engine and get lost!) and we'll put aluminum foil over the fuel lines, which seems to be the only possible fix, other than not driving it when the temp is over 90! Alas, it's the only car I have running right now!
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Old 08-11-2012, 06:01 AM   #2
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http://www.vw-resource.com/vapor_lock.html


http://www.thesamba.com/vw/forum/viewtopic.php?t=471572

Hope these help you sort the problem out.
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Old 08-11-2012, 06:13 AM   #3
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Thanks, Vince! My problem is that every VW engine is unique, after years of aftermarket parts and different mechanics... I know what to do if I can just identify the right parts. David will know, I'll get it fixed today. Everyone LOVES a VW going 30 mph on the highway, and don't realize that I'm terrified and can't go any faster!
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Old 08-11-2012, 08:01 AM   #4
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Thanks Vince, I enjoyed reading those links. Had a 64 karmannghia that I upgraded with bigger 83mm pistons and cylinders

SarahS, I'd be trying to find out if the engine is running hotter than normal because of ign timing, overly lean fuel mixture and or other causes mentioned in Vince's link.

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Last edited by Sonny; 08-11-2012 at 08:15 AM.
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Old 08-11-2012, 01:36 PM   #5
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I found this book: "How to keep your volkswagon alive, a manual for the complete idiot" a real lifesaver when it came to keeping my bugs running!

Amazon
You might check your fuel lines and vac lines for cracking. They may be sucking air. Also, in the top of the carburator is a rubber diaphram that tends to get wrinkled. The Carburator has 4 screws in the top. Underneath is a spring and the diaphram. I've gotten home many times with a little spit and smoothing on that diaphram.
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Old 08-11-2012, 03:02 PM   #6
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BG, I have the Idiot book, it's a must-have for any VW owner. David came over and we replaced the fuel filter and cleaned the oil rebreather pan, and it's working fine. Of course, it's not over 100 degrees today either! There was a cracked little rubber plug that we replaced also. Then he took the flat tire off the truck (AAA said they couldn't get it off!) and had that fixed. Then refused to accept anything and went off into the sunset!
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Old 08-11-2012, 03:08 PM   #7
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David sounds like a treasured friend! Hope you're problem is fixed!
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Old 08-11-2012, 03:12 PM   #8
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David is family, in a way... I've known his family for about 35 years, I've sorta been adopted. Add to that, he lives 5 minutes away, loves to work on VWs, and is retired. I think I've found my VW mechanic!

The last mechanic replaced the entire brake system to the tune of $750, and that wasn't the problem. I definitely needed a new one!
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Old 08-11-2012, 05:02 PM   #9
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This is one of the drawbacks of the Beetle.

I wonder why they never resolved it at the factory.

Cooling and insulation. I would guess that is what that ram air scoop thing is for.

I would think some of that insulation on the gas lines along with wrapping them with some of that metal duct tape. Not that "duct tape" cloth fiber stuff but that metal stuff with a back liner that must be removed and it is made of real metal. Strong and made to go in hot attics for years.
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Old 08-12-2012, 12:30 AM   #10
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David checked all my gas lines and they were already thoroughly insulated. It might be the 100+ degree heat here, day after day... I think it's been more than a month. This temp is not made for VWs. However, when you have a daily driver, you have to function somehow! Also, our new work location has NO shade to park in, so the car is in the heat all day (I park it right outside my window so I can admire it all day).
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Old 08-12-2012, 02:31 PM   #11
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Hey, hey, we'll that is the way it is.

You want the cachet of a "quirky" car sometimes you have to pay.

If you have a MG B you get to replace fuel pumps all the time and smell gas in the cabin.

Own a certain year of Chevy truck the hood hinge damages the hood unless you retrofit braces.

Have a Old Dodge and you curse changing tires until you remember lug nuts are
left hand.
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Old 08-12-2012, 03:32 PM   #12
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I love my quirky car! I've had it 18 years, it's like a child.
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Old 08-12-2012, 04:02 PM   #13
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Quote:
Originally Posted by SarahS View Post
I love my quirky car! I've had it 18 years, it's like a child.
Old enough to VOTE! LOL Do you still have your truck?
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Old 08-12-2012, 05:43 PM   #14
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The truck is doing great, since David changed the flat tire That truck has personality!

---------- Post added at 04:43 PM ---------- Previous post was at 04:42 PM ----------

Knowing CarCar, he probably WOULD vote if I got him there in time!
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Old 08-13-2012, 07:53 AM   #15
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Might be useful, but not sure

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