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vapor lock? |
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Eliteman76 ![]() Admin Group ![]() Joined: 20-March-2006 Location: Nebraska, USA Status: Offline Points: 4870 |
![]() ![]() ![]() ![]() ![]() Posted: 24-August-2014 at 5:54PM |
Anyone run into their car just shutting down on them in hot weather?
I had the GTS out and the old dude was hustling down the freeway, I get off then boom nothing. I popped the hood, and pulled the air cleaner, and I had one heck of a venting off the carb vents on the edelbrock. It was pretty warm today but just surprised. I had issues earlier with it seeming like it was starting hard and loaded up a bit. I let sit on the shoulder of the offramp for 5-10 minutes, put the clutch in and boom fired up with my foot to the floor...driving home it was giving me a couple indicators it was doing this again but I limped her home and no further issues. Bit puzzled but assumed just hot out and that's why. |
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bata747-8 ![]() Moderator Group ![]() ![]() Honorary Spam Bot / Zombie Account Joined: 24-June-2010 Location: China Status: Offline Points: 131 |
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The 521 did it a couple of times in the driveway idling before I really started driving it. The idle times were like 30 minutes or more.
One other time it started running rough. Seattle traffic, I-405, rush hour. Getting through bellevue going southbound can be near impossible. It was a Thursday (busy day, many people's Friday) and I was coming back from Snohomish where I got the exhaust installed (Airport Welding and Muffler). From exit 14 (hwy 520) to south of I-90 (exit 10) it took an hour. Yes, four miles, almost one hour and no accidents or other blockages. It was very warm (85-ish) so toward the end it was running rough. That was with the old electric fan 2000 cfm) and the new one (3000 cfm) I think would do a little better. |
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californiajohnny ![]() Moderator Group ![]() ![]() Joined: 05-October-2013 Location: winlock, wa Status: Offline Points: 14512 |
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you might try one of these: i've bought several for my cars, seems to have helped with that problem! basically it helps to isolate some of the heat soak from the intake to the carb! for ten bucks it 's worth a try
![]() http://www.ebay.com/itm/1-2-PORTED-PHENOLIC-CARBURETOR-SPACER-4BBL-FITS-HOLLEY-SB-CHEVY-FORD-SBC-BBC-BB-/180915455947?pt=Motors_Car_Truck_Parts_Accessories&hash=item2a1f66c7cb&vxp=mtr |
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JOHN
74 GRAN TORINO S&H CLONE 74 VETTE CUSTOM 90 S10 BLAZER 4X4 LIFTED 77 CELICA CUSTOM 75 V8 MONZA SUPERCHARGED 79 COURIER VERT. SLAMMED 75 VEGA V6 5 SPD 70 CHEV C10 P/U 68 MUSTANG FB CONVERSION |
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mlachance112785 ![]() Senior Member ![]() ![]() Joined: 31-May-2012 Location: Dighton, MA Status: Offline Points: 343 |
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Happened to me last year when I had the car dynoed. Since then, it's been fine. But I don't think I've driven it on a hot day like that either.
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77 Cougar XR7 460/C6
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aquartlow ![]() Senior Member ![]() Joined: 19-December-2011 Location: Summerfield, Fl Status: Offline Points: 2221 |
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Andy,
I know what you are dealing with
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www.supermotors.net/22468
Yeah, It's a Hybrid...It burns gas and tires. No matter how good she looks, somebody, somewhere, is tired of her sh*t. Beauty is skin deep, ugliness goes clear to the bone. |
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unlovedford ![]() Senior Member ![]() ![]() Joined: 17-December-2010 Location: Tennessee Status: Offline Points: 10142 |
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Carry along a bunch of wooden clothes pins for an emergency fix. Clamp them along the line leading to the carb - the wooden clips absorb the heat and cool the line enough to help with vapor lock. Not a permanent cure by any means, but will help in a pinch.
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Joe
1972 Mom's Squire Wagon 1972 Torino Wagon 1976 Torino 1968 Cougar XR7-First batch 1972 Torino 460 1989 BroncoII/Jeeps/Titanimous Popeye and Brutus (Rams) |
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GranTorinoSport ![]() Admin Group ![]() ![]() Admin of "The Org" Joined: 20-May-2003 Location: Seattle Status: Offline Points: 2287 |
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To what californiajohnny says - yes get a spacer. Normally a 1/2 inch spacer will fit under our hoods with no problem. I used Edelbrock's 8722 (wood fiber laminate):
http://www.summitracing.com/parts/edl-8722 I think it helps - I know that 521 runs warm and there is a ton of heat to dissipate. |
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Eliteman76 ![]() Admin Group ![]() Joined: 20-March-2006 Location: Nebraska, USA Status: Offline Points: 4870 |
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On my car I got rid of the steel line and went Parker pushlok hose.
I've read stuff on the gas. I tend to only run shell 91 because the station I go to has two pumps with dedicated nozzles. Hate regular gas stations with all three grades on a single nozzle. Keep in mind I'm running a 4" tall air filter on a circle track spun air filter so I'll probably need to drop down to a shorter filter if I get a phenolic spacer. It started right up last night fine idled normal too. I was just surprised at the vapors steaming out the vents on the top of the carb! Edited by Eliteman76 - 25-August-2014 at 9:43AM |
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Big Bird ![]() Senior Member ![]() ![]() Joined: 25-August-2013 Location: New York Status: Offline Points: 4194 |
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Try ethanol-free gas.
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"What we do in full frontal view, is more honest than your cleaned-up mind."
Randy 1979 T-Bird 2005 F-150 STX RCSB 4.6, 3.55 LSD How the Heck does a REGULAR CAB SHORTBED weigh over 5200 pounds? |
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Rockatansky ![]() Senior Member ![]() Joined: 30-July-2010 Location: On The Road Status: Offline Points: 5846 |
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yes today's fuel is blended for pressurized injection systems, definitely not optimized for carbs, also to make things worse could you have winter blend still in the tankfirst warm day of the season my 2003 CVPI always acts up, won't hold idle & I have to 2-foot itthis year I had just filled up on a chilly day & it went to like mid 80's the next time I drove itreturn bypass regulator is a good idea... old school using the stock mechanical pump they just created an orifice return in front of the carb to keep a supply of cool fuel in the line in front of the carb
Edited by Rockatansky - 25-August-2014 at 11:36AM |
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72 GT Ute
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