vapor lock i think - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72shadetree · 07-01-2005, 02:29 PM

the 305 in the 69 was tired so i put the 350 outta the 72 i wrecked in the 69.it runs real good except after about 30 min it just bogs and skips at the least touch of gas pedal.it is real hot here and some one told me it sounded like it was vapor locking.what do you think if so what can i do about it. thanks

cdowns · 07-01-2005, 03:05 PM

well the first thing to check is the fuel line from the pupm to the carb , it should not be in contact with the engine block,it should stand off from the block 3/8inch at least for it's whole length

69 longhorn · 07-01-2005, 06:13 PM

Its been 95 -100 f here in illinois, & that was edlbrock acting up like that. I added a 1 inch, 4 hole plastic insulater spacer under the carb,& she straightened up.....

L

boogie67 · 07-01-2005, 10:22 PM

I would also check the rubber line going from the tank to the fuel line .Mine use to do that and the hose was flatting out when it got going good.Took me a while to figure that out.

s95930 · 07-01-2005, 10:28 PM

I have been fighting a vapor lock problem in my truck for a long time. I will have to check my rubber line.

72shadetree · 07-01-2005, 11:18 PM

thanks everybody i will check the line from pump to carb.if i rember its real close to the block and intake

07-01-2005, 02:29 PM	#1
72shadetree KEEP ON TRUCKING Join Date: Sep 2000 Location: martinsville va Posts: 2,563	vapor lock i think the 305 in the 69 was tired so i put the 350 outta the 72 i wrecked in the 69.it runs real good except after about 30 min it just bogs and skips at the least touch of gas pedal.it is real hot here and some one told me it sounded like it was vapor locking.what do you think if so what can i do about it. thanks __________________ 72 cheyenne 2wd lwb 71 k20 sons bassett va

07-01-2005, 03:05 PM	#2
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	well the first thing to check is the fuel line from the pupm to the carb , it should not be in contact with the engine block,it should stand off from the block 3/8inch at least for it's whole length __________________ 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

07-01-2005, 06:13 PM	#3
69 longhorn Registered User Join Date: Aug 2001 Location: rock island,il,usa Posts: 5,382	Its been 95 -100 f here in illinois, & that was edlbrock acting up like that. I added a 1 inch, 4 hole plastic insulater spacer under the carb,& she straightened up..... L __________________ http://community.webshots.com/user/hotrodhorn

07-01-2005, 10:22 PM	#4
boogie67 Registered User Join Date: Mar 2005 Location: waco tx Posts: 584	vapor lock I would also check the rubber line going from the tank to the fuel line .Mine use to do that and the hose was flatting out when it got going good.Took me a while to figure that out. __________________ 77 swb starting all over again.

07-01-2005, 10:28 PM	#5
s95930 A-Adam A-Adam Join Date: Apr 2003 Location: Sarpy Co. Ne. South of Omaha Posts: 263	I have been fighting a vapor lock problem in my truck for a long time. I will have to check my rubber line. __________________ 70 3/4 ton GMC Camper Special

07-01-2005, 11:18 PM	#6
72shadetree KEEP ON TRUCKING Join Date: Sep 2000 Location: martinsville va Posts: 2,563	thanks everybody i will check the line from pump to carb.if i rember its real close to the block and intake __________________ 72 cheyenne 2wd lwb 71 k20 sons bassett va

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