53_Suburban Posted October 16, 2010 Report Share Posted October 16, 2010 (edited) Ever since I put the Langdon exhaust on the Suburban, I've experienced "vapor lock" symptoms whenever I drive more than 5 or 10 minutes. I finally broke down and wrapped the front exhaust pipe near the fuel pump today. I also wrapped the fuel line on the advice of one of my co-workers (he's a flattie Dodge army truck guy). Getting ready to go for a drive and see if this solves the problem. Was going to go up to Redwwod City and do some other work on her at the shop, but I spent so much time wrapping the pipe & lines I decided to pass on that. Maybe a good test would be to go over to In N Out Burger (you get In line N you never get Out). If she starts up after that idling eternity I'll know I have the problem solved. Edited October 19, 2010 by 53_Suburban Quote Link to comment Share on other sites More sharing options...
53_Suburban Posted October 19, 2010 Author Report Share Posted October 19, 2010 Well, the exhaust wrap seems to have done the trick. Took her up to Los Altos then over to Palo Alto on Foothill Expressway, then back home. A good little 25 minute trip. Got her home and she restarted without a hitch. Similar trip today but this time south on Foothill to Cupertino and back. Started up again with no problem. Today was about 20 degrees warmer than yesterday outside. With that out of the way now I only have about 999 things left to fix ... LOL. Quote Link to comment Share on other sites More sharing options...
JBNeal Posted October 19, 2010 Report Share Posted October 19, 2010 (edited) the local NAPA know-it-all sold me some spark plug wire sleeves made of the same material as the exhaust wrap. I put them on my '48 fuel line and used some aluminum electric fence wire I had sitting in the back of the truck to make a coil that would keep the sleeves from sliding down. The vapor lock problem I had purt'near went away; putting new battery cables on the starter + battery cured it of my stalling problem.OT...I don't want to tempt fate by taking one of my relics into a drive-thru lane, I usually just park out at the edge of the parking lot to let the gawkers congregate Edited March 7, 2014 by JBNeal Quote Link to comment Share on other sites More sharing options...
james curl Posted October 19, 2010 Report Share Posted October 19, 2010 I have dual carburetors on my 48 Plymouth and drive it every where and have never had a starting problem after installing 00 wires from the batery to the starter, have since converted to 12 volts with a six volt starter, spins really fast to start. 1 Quote Link to comment Share on other sites More sharing options...
hkestes41 Posted October 19, 2010 Report Share Posted October 19, 2010 I have the Langdon's headers on my 48 and have never had a problem in Dallas. Made the trip home from the HAMB drags in August and it was 104 degrees when I was about 15 miles from home. Made several stops on that trip to "Cool off" started right up every time. I do have 12 volts and dual carbs. Quote Link to comment Share on other sites More sharing options...
Reg Evans Posted October 19, 2010 Report Share Posted October 19, 2010 Just as a preventative measure I wrapped my gas line with some fancy chrome stuff I found in the kitchen. As you can see my manifolds are getting rusty so I'm not going to recommend this stuff as a permanent coating. 1 Quote Link to comment Share on other sites More sharing options...
MarkAubuchon Posted October 19, 2010 Report Share Posted October 19, 2010 Fuel lines, I was alway taught to use a metal line in and around exhaust pipes and manifolds. Quote Link to comment Share on other sites More sharing options...
Reg Evans Posted October 19, 2010 Report Share Posted October 19, 2010 Great ! I musta cut class the day they went over that. Quote Link to comment Share on other sites More sharing options...
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