38dgas Carb with electric fuel pump issue
Discussion
This may be just mine but worth checking to be on the safe side.
I have just fitted a facet gold pro fuel pump and King filter regulator setting the fuel pressure to 4 psi. When checking for leaks I found that the brass inlet valve on the carb leaked only a tiny amount but any fuel leak it not good. I thought this must be a faulty carb so replaced it with my spare only to find it was exactly the same. My car is an early one so does not have a return so maybe with a return they will be ok
I have now silver soldered in the brass inlet into the carb and the leak has gone.
Like I have said this may be just related the the carbs that don't have a return or it could also be that I have two faulty carbs. But this is definatley worth checking just for piece of mind and only takes a minute or two with a bit of tissue.
Chris
I have just fitted a facet gold pro fuel pump and King filter regulator setting the fuel pressure to 4 psi. When checking for leaks I found that the brass inlet valve on the carb leaked only a tiny amount but any fuel leak it not good. I thought this must be a faulty carb so replaced it with my spare only to find it was exactly the same. My car is an early one so does not have a return so maybe with a return they will be ok
I have now silver soldered in the brass inlet into the carb and the leak has gone.
Like I have said this may be just related the the carbs that don't have a return or it could also be that I have two faulty carbs. But this is definatley worth checking just for piece of mind and only takes a minute or two with a bit of tissue.
Chris
plasticpig72 said:
Chris,
why and what is the advantage of an electric pump
Alan
There are a few advantages to an electric pump the main ones are as follows.why and what is the advantage of an electric pump
Alan
1 better flow of fuel to the carb epecially under hard acceleration on tuned engines.
2 if the car is left for a while an electric pump will fill the carb fuel chamber up quickly without having to turn the engine over for ages.
3 slight power increase from not having the fuel pump running directly from the cam pulley and less heat transfer from the engine block/alloy pump to the fuel.
4 less chance of getting vapour locks in the fuel line system aiding hot starts.
Hope that helps
Chris
There are many ways to make an electric fuel pump safe in the event of a crash. The inertia switch is one. You can also use an oil pressure switch so while there is oil pressure the pump runs if the engine stops it also stops the the fuel pump. You can also do the same using the alternator. The last two though do need a priming switch but this can be a simple a rocker switch you just press for a few seconds.
Chris
Chris
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