Message originally posted by: Gordon Thompson
I have an 1800 SC marina engine in my roadster as a result of what I thought was fuel starvation problems (probably caused by vapour locks in hindsight), I replecd the mechanical fuel pump with a brand new one. I then started getting fuel out of the SU HS4 carb fuel bowl air vent from time to time, so I replaced the needle valve and seat. The new needle valve and seat does appear to shut off when I blow through it, the float is a serviceable plastic type but I still get fuel coming out of the vent. There is a single feed pipe from the pump to the carb. Has anyone any ideas why and how to cure it!
I have an 1800 SC marina engine in my roadster as a result of what I thought was fuel starvation problems (probably caused by vapour locks in hindsight), I replecd the mechanical fuel pump with a brand new one. I then started getting fuel out of the SU HS4 carb fuel bowl air vent from time to time, so I replaced the needle valve and seat. The new needle valve and seat does appear to shut off when I blow through it, the float is a serviceable plastic type but I still get fuel coming out of the vent. There is a single feed pipe from the pump to the carb. Has anyone any ideas why and how to cure it!
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