Symtoms and cures for vapor lock - The 1947 - Present Chevrolet & GMC Truck Message Board Network

shiner2001 · 10-28-2010, 02:40 AM

Ha, crm318, just noticed your avatar...the donor car for my engine was a "Melba Toast," 70 Chevelle SS. I think the one in the movie might have been an LS5, but I still get a kick outta having that connection.

cdowns · 10-28-2010, 05:39 AM

do you get a pressure buildup in your gastank? wwhen this happens try taking the gascap off , if you hear a whooshing sound that means you have a venting problem from not having the tank vented

many times with old vehicles there can be alot of crap in the tank. it is not unusual for the sock strainer on the pickup tube in the gastank to be clogged with gunk and crap

cam.man67 · 10-28-2010, 07:16 AM

Quote:

Originally Posted by shiner2001

Ha, crm318, just noticed your avatar...the donor car for my engine was a "Melba Toast," 70 Chevelle SS. I think the one in the movie might have been an LS5, but I still get a kick outta having that connection.

allright allright allright! I LOVE that movie!

And yes, Wooderson's Chevelle was an LS5.

jcis4me · 10-28-2010, 12:21 PM

Aloha
"Man I love them red heads!"

Mine did the same thing I replaced and re routed the fuel line away from the headers and mounted the fuel pump on the out side of the frame rail, still was getting air in the fuel filter, put on new lines from the tank but still had the problem, so I changed the fuel pump and the problem went away, now I know you said you even put on a new pump , so I would check the fuel lines from the tank making sure they are all tight.
My buck 2.98's worth!
Aloha
Marty
PS btw our fuels now have alcohol in em and it evaporates faster than gas, I have heard here in Hawaii they want to add more alcohol to the gas! costs to much to import oil here I guess,

10-28-2010, 02:40 AM	#1
shiner2001 Registered User Join Date: Sep 2010 Location: Fort Worth, TX Posts: 222	Re: Symtoms and cures for vapor lock Ha, crm318, just noticed your avatar...the donor car for my engine was a "Melba Toast," 70 Chevelle SS. I think the one in the movie might have been an LS5, but I still get a kick outta having that connection. __________________ Derek 72 Chevy Cheyenne Super LWB 454 SS LS6 90 GMC Suburban V2500 350 ----------- 64 Chevy El Camino 357 73 Jeep Wagoneer 360 78 Jeep Cherokee 360 79 Scout II 345 88 Jeep Wrangler 4.2L 91 Jeep Wrangler 4.3L 98 Lincoln Mark VIII 4.6L 01 GMC Yukon 5.3L *"If it's not broken, fix it 'till it is!"*

10-28-2010, 05:39 AM	#2
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Symtoms and cures for vapor lock do you get a pressure buildup in your gastank? wwhen this happens try taking the gascap off , if you hear a whooshing sound that means you have a venting problem from not having the tank vented many times with old vehicles there can be alot of crap in the tank. it is not unusual for the sock strainer on the pickup tube in the gastank to be clogged with gunk and crap __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

10-28-2010, 12:21 PM	#4
jcis4me Registered User Join Date: Aug 2010 Location: Jersey shore Posts: 115	Re: Symtoms and cures for vapor lock Aloha "Man I love them red heads!" Mine did the same thing I replaced and re routed the fuel line away from the headers and mounted the fuel pump on the out side of the frame rail, still was getting air in the fuel filter, put on new lines from the tank but still had the problem, so I changed the fuel pump and the problem went away, now I know you said you even put on a new pump , so I would check the fuel lines from the tank making sure they are all tight. My buck 2.98's worth! Aloha Marty PS btw our fuels now have alcohol in em and it evaporates faster than gas, I have heard here in Hawaii they want to add more alcohol to the gas! costs to much to import oil here I guess, Last edited by jcis4me; 10-28-2010 at 12:24 PM.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.