RedHot71 Posted May 18, 2019 Report Posted May 18, 2019 Finally got my B3JA Dump Truck back together, bled the brakes and took it down the road. Got back, lifted the hood to check everything & noticed the fuel in the inline see-thru filter was boiling while it was still running. Shut it down, bubbling subsided some, but still bubbling. Any thoughts? Should there be a heat shield between the fuel line coming off the fuel pump under the exhaust manifold? If so, what does it look like & can I just fab one? Thanks in Advance. Quote
RedHot71 Posted May 19, 2019 Author Report Posted May 19, 2019 Really? Nobody else has had this problem? Quote
plymouthcranbrook Posted May 19, 2019 Report Posted May 19, 2019 In a word, no. My 52 Cranbrook seems to run cool and liquid. Quote
Jerry Roberts Posted May 19, 2019 Report Posted May 19, 2019 Do you have the usual heat shield on your fuel pump ? When you touch the fuel lines are they hot ? Some guys have re-routed their lines away from the exhaust manifold ... as much as they can anyway . Others have wrapped their lines with insulation or covered the lines with rubber tubes . 1 Quote
The Oil Soup Posted May 19, 2019 Report Posted May 19, 2019 Here is a pdf of the heat sheild. http://dodgepilothouseclub.org/know/heat_shield/shield.pdf Quote
kencombs Posted May 19, 2019 Report Posted May 19, 2019 If it only does it when running, it may not be heat related. Actually, most heat caused issues get worse when the gas is no longer moving. I'd check the line from the tank to the pump for air leaks. It is possible that a small leak can be sending air from the pump upward, causing bubbles in the gas. 4 Quote
RedHot71 Posted May 19, 2019 Author Report Posted May 19, 2019 Thanks for the replies. Do not have the heat shield right now. Was thinking about using the sleeves for spark plug wires when you install headers. Quote
Jeff Balazs Posted May 20, 2019 Report Posted May 20, 2019 If you have the stock fuel pump then you need a heat shield. You can either make one or buy one. They are essential when using these modern fuels. It is hot here in Socal. I ended up removing the stock pump and running a full time electric pump. I also made a shield that fits between the carby and the manifolds. Pretty much solved fuel issues I was having. With these newer fuel formulas and the way the manifolds are on these engines you may have to deviate a bit from the stock installation to solve this. Jeff 1 Quote
ggdad1951 Posted May 20, 2019 Report Posted May 20, 2019 yah this ^^^. You can either make one or several of our standard vendors do sell them. Quote
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