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> So I think I have vapor lock, what is it like?
oldschool
post Feb 12 2014, 10:33 PM
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Can Vapor lock happen even while your at a stop light?
I made a few stops today and every time I tried starting my car it just took longer to fire? and when it did, it died down the street at a light. (IMG:style_emoticons/default/confused24.gif)
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JStroud
post Feb 12 2014, 11:04 PM
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When I was on my trip last year my car vapor locked at least 8 times....three times while sitting at a stop light, five times died while driving at slow speed.

Mostly after freeway driving then getting stuck in stop and go traffic in town, but then it was 100+ each time.

Not fun though, so during my conversion the new fuel pump is going up front.

Jeff
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oldschool
post Feb 12 2014, 11:45 PM
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QUOTE(JStroud @ Feb 12 2014, 09:04 PM) *

When I was on my trip last year my car vapor locked at least 8 times....three times while sitting at a stop light, five times died while driving at slow speed.

Mostly after freeway driving then getting stuck in stop and go traffic in town, but then it was 100+ each time.

Not fun though, so during my conversion the new fuel pump is going up front.

Jeff


Yeah it never did it before I wonder what changed (IMG:style_emoticons/default/confused24.gif) I don't have the HE hook up to the heater valves could that be a problem?
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Dave_Darling
post Feb 13 2014, 12:00 AM
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I've only had it happen once in a couple of decades of driving. That was going through the Desert in 100+ degree temps up a long hill.

I think it is more likely to be a mixture problem of some kind than vapor lock.

--DD
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KELTY360
post Feb 13 2014, 12:09 AM
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Maybe your fuel pump is dying.
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Elliot Cannon
post Feb 13 2014, 12:27 AM
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My fuel pump has been in the back for 10 years. What is vapor lock??
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euro911
post Feb 13 2014, 02:31 AM
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Check your fuel filter(s), Jaime.
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oldschool
post Feb 13 2014, 10:34 AM
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The kid is coming over today to check it out. News at 11 (IMG:style_emoticons/default/blink.gif)
btw its 1973 2.0 FI
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SLITS
post Feb 13 2014, 12:05 PM
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There was this blond that married a truck driver ...

On their wedding night, he demanded she get on her knees and blow the meat whistle ....

When nothing came of it, he declared he must be vapor locked ...


That's what it is like.
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JawjaPorsche
post Feb 13 2014, 02:19 PM
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My first vapor lock was in the desert in 100+ heat then it just vapor lock at red lights, while driving, etc.

Moved my fuel pump to the firewall 20 years ago and it has never vapor lock since! (IMG:style_emoticons/default/beerchug.gif)


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'73-914kid
post Feb 13 2014, 02:20 PM
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Jaime's possible vapor lock issue is something unique I think. He doesn't have heater valves on his heat exchangers, but they're hooked up to the fan shroud, so it hot air directly from the heat exhcuangers is being dumped directly onto the fuel pump..
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JawjaPorsche
post Feb 13 2014, 02:24 PM
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QUOTE('73-914kid @ Feb 13 2014, 03:20 PM) *

Jaime's possible vapor lock issue is something unique I think. He doesn't have heater valves on his heat exchangers, but they're hooked up to the fan shroud, so it hot air directly from the heat exhcuangers is being dumped directly onto the fuel pump..


He said it does it a lot at red lights. No air moving except hot air from exchangers. Not good! (IMG:style_emoticons/default/sad.gif)
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'73-914kid
post Feb 13 2014, 03:05 PM
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Oh, and we started the car this morning with no issue..
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914_teener
post Feb 13 2014, 05:22 PM
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QUOTE(Dave_Darling @ Feb 12 2014, 10:00 PM) *

I've only had it happen once in a couple of decades of driving. That was going through the Desert in 100+ degree temps up a long hill.

I think it is more likely to be a mixture problem of some kind than vapor lock.

--DD



(IMG:style_emoticons/default/agree.gif) +1

Check the MPS on vaccum.....could be starting to break.

If you think it might be vapor lock get a sealed fuel gauge at HF and mount it inline to be sure. Try to replicate the problem.

My two cents.
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914_teener
post Feb 13 2014, 05:24 PM
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......ohhhh....and make sure your meat whistle is clean! (IMG:style_emoticons/default/av-943.gif)
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KELTY360
post Feb 13 2014, 06:18 PM
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JUST BLOW

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MDG
post Feb 13 2014, 06:25 PM
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QUOTE(SLITS @ Feb 13 2014, 01:05 PM) *

There was this blond that married a truck driver ...

On their wedding night, he demanded she get on her knees and blow the meat whistle ....

When nothing came of it, he declared he must be vapor locked ...


That's what it is like.


(IMG:style_emoticons/default/av-943.gif)
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Kirmizi
post Feb 13 2014, 08:26 PM
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QUOTE('73-914kid @ Feb 13 2014, 12:20 PM) *

Jaime's possible vapor lock issue is something unique I think. He doesn't have heater valves on his heat exchangers, but they're hooked up to the fan shroud, so it hot air directly from the heat exhcuangers is being dumped directly onto the fuel pump..


Connect the rest of the ducting of the heating system to control the flow of hot air from the HEs.
IIRC the Porsche suggested removing the caps from the passenger side heater valves in order to vent heated air away from the fuel pump.
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oldschool
post Feb 14 2014, 01:34 AM
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I'm going to put back the heater valves..that should do it. (IMG:style_emoticons/default/piratenanner.gif)
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TheCabinetmaker
post Feb 14 2014, 06:44 AM
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The heater valve, when in the closed position, just dumps the hot air. It dumps directly on the pump which is only about 2 inches away. Leave the valve off and cap both tubes. My 73 used to have vapor lock anytime it got above 95. Moving pump to front trunk solved that problem forever.
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