Fuel line route to carb from pump

[719mopar]

Can anyone please show or explain the routing for the fuel line from fuel pump to carb? My set up currently has line running up the front of timing chain cover and turns right on top of intake next to thermostat housing, seems to be boiling fuel when hot,observed visually in filter. Recommendations for correct/better route needed, thanks

 

[Mopars & Missiles]

I'm sure someone would like to help you with this, but it would help us to help you if we knew what car you have, what year, and probably most importantly what engine and carburator do you have.

It appears from your avatar photo that you might be working on a '73 Challenger, but that still doesn't answer the "what engine/carb" question and besides, I hate to speculate on what you are working on anyway. So if you want details, you have to provide details.

Also, just an FYI, the FSM has diagrams showing factory routing of fuel lines, so that is always a good reference book to have.

 

[budascuda]

Hey Mopars & Missiles, long time no see

 

[fasjac]

Welcome to the site from Arkansas! As M& M says, need to see and know some details. My BB six pack fuel line routes off the mechanical pump up to a filter to carbs. Like to see some photos

 

[Chryco Psycho]

That seems to be the correct routing , most come up between the head & alt & turn over the intake to the carb , but the fuel is not the same as it was 50 years ago , , you could insulate the fuel line or create a different route .

 

[DetMatt1]

Sounds correct, it’s away from the exhaust. Maybe your flow isn’t what it should be? Where’s this clear filter mounted and what makes you say you can watch fuel boiling in it?

 

[340challconvert]

719
to FEBO.
Great people here with a lot of knowledge on our e bodies!

 

[moparleo]

Pictures are the best thing you can do to get an informed answer. We can't see what you see.

 

[Challenger RTA]

A stock 73 would be a LA block. approxament stock location before I finished.as for boiling.Did it vapor lock yet?

 

[719mopar]

I'm sure someone would like to help you with this, but it would help us to help you if we knew what car you have, what year, and probably most importantly what engine and carburator do you have.

It appears from your avatar photo that you might be working on a '73 Challenger, but that still doesn't answer the "what engine/carb" question and besides, I hate to speculate on what you are working on anyway. So if you want details, you have to provide details.

Also, just an FYI, the FSM has diagrams showing factory routing of fuel lines, so that is always a good reference book to have.

Yea sorry, guess I did leave out critical info, 1973 challenger 340 w/avs2 edelbrock , thanks for the response

 

[719mopar]

A stock 73 would be a LA block. approxament stock location before I finished.as for boiling.Did it vapor lock yet?

Yup that’s the route on mine, no full vapor lock but once car is warm I have a hard time idling and restart

 

[Challenger RTA]

That's vapor lock!

 

[Challenger RTA]

What kind of gasket under your carb?

 

[Challenger RTA]

I think It's a 3/8" or 1/2" that was stock. there is a fuel filter with a 1/4" return that help prevent vapor lock. Off hand I think it plumbed into a return line to the tank. Check to see if you have fuel dripping in carb after running.

 

[Mopars & Missiles]

Another thing that helps prevent fuel boiling and vapor lock is to block off the heat crossover in the intake manifold. At least on big blocks, I've never had a small block so don't know for sure if they are designed the same way.