Technical 1.4. t-jet fuel pump not buzzing at first start

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Technical 1.4. t-jet fuel pump not buzzing at first start

marracc

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Nov 4, 2017
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Car: GP 1.4 t-jet 120HP 2008. Usually I could hear fuel pump do buzz for second or two when starting car, specially on first start. Now I cant hear buzz when car is first started. I have checked pump with MES, and it operates when executed. Car run normal. What could it be? Is it safe for driving? Did someone have same issue?
Thnx
 
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Update: I can hear sound like piiiiiiii, high pitched sound, when I am outside of car, with my ear near side of car. Sound is different than it shall be usual, more silent. I have 2 GP, so I was comparing them.
 
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