Miserable time with Vapor lock

[rlm18]

Hmmmmm, which tire shop? You may have been talking to B.O.B.

Aspen Park Tire and Auto. I can't remember his name tho. Said he had a couple rigs.

They put new tires on for me that I got from tire rack. 35's!

[Justin]

Yeah, that wasn't bob.

[ZOSO]

Installed the electric pump yesterday and used some steel hard line for part of the engine bay. I routed the line as far away from the block as I could so I'm hoping the combination of the two will so the trick. If not, I'll have to keep throwing other ideas at it. Thanks for the suggestions.

Hi Eck. I was wondering if the steel hard line worked?

Anyone,

I think I am battling vapor lock as well. After a few hours of driving, no matter the style, I start having trouble. Maybe that is too long to expect out of the bronco? Hiccups, bucks, loses throttle response, stalls if I keep pushing it. I can slow down and limp along unless there is incline, then I have to stop and let it rest.

I bought some heat guard hose from napa and tried it in the engine bay but it did not work. I was thinking about cutting out some of the slack in the engine bay. Trying to reroute it to get it higher off the engine. Do the regulator and gauge need that much hose after to the carb to function properly? Is it even set up right? Or maybe metal heat guard or maybe just metal line? It also appears that I have two fuel filters? One before the pump and one in the engine bay? Is that necessary? I was going to try changing those, maybe taking one out? Trying to figure out if maybe my intake line in the tank is dirty. I have a single 23 gal tank. Changing to a different electric pump. Not sure which I have. Checking the regulator and return line? I also have a phenolic spacer on the carb.

I also do not understand why there is so much trouble with vapor lock.

Anyone one have anymore ideas?

Thank you.

Russell

Do yourself a favor while your messing with lines etc and get that Mr Gasket FP regulator out of there. Replace it was a decent FP regulator as soon as you can. I have had 2 of those start spraying fuel in the engine bay at random and was just plain lucky there was no fire as a result.

Brett

Ditto!!! Mine rutured last year elk hunting. I was lucky the engine was cold. It sprayed fuel all over the headers.

[rlm18]

With that Carter P4070, will I even need a regulator anymore?

[ZOSO]

no

[rlm18]

thank you

[rlm18]

Well, before I was able to work on the bronco I started having trouble just driving to Denver from Conifer and back. Even in the cooler weather. Thought I might have electrical power issues or a dirty tank. Distributor, points or something from more research i did but the carter pump and new filters came in and I swapped them out. Now I only have a filter between the pump and tank and one under the hood. I took out the regulator under the hood. I still have the pressure gauge. That took out over a foot of line under the hood. I do not have a return line going back to the tank anymore. Made a run to Bailey and back from Conifer. No problem. Then to DIA and back. No problem. Then to Arkansas. Made that trip too. It would probably behoove me to do a tune up, not sure what the points are supposed to look like, and do a tank inspection. It has an after market 23 gal tank. I also need to figure out a wiring problem. My front flashers do not want to work when the headlights are on. Grounds and relays are the answers I am getting to look into. The rig came with a wiring harness an dakota digital gauge uninstalled. I had them installed by a shop. They had trouble with the switch in the column and had to go around it with a set of relays I believe but they did get it going. The gauge inside shows the blinker working but outside it is not so we shall see.

[PaulW]

Off road racers typically use a return line from the carb float chamber using a low flow Facet electric pump to return gas to the tank. Tricky to setup.
For the non race setup using a pressure reg with a return would work very good. That would mean the pump would have to provide excess pressure to let the regulator operate. I would use an electric one near the tank
Best fix of all is in in tank pump and a either a regulator or the Facet setup for fuel return.
IMO insulating lines and using special lines is a waste of time. Just leave the lines stock and implement a fuel return.
PaulW

[rlm18]

Thank you for the info PaulW. That Facet system does sound tricky to me. So far the carter pump is doing the trick, without a regulator or return line. Well it has started leaking but a replacement is on the way.