Sound of fuel pressure regulator

Mario110

Active Member

Posts

105

Location

Germany

• Nov 14, 2020

• #1

Hi all,
I've some starting issues when cold, a lot of things are changed. For now, I just want to know if you think there is air in the fuel system. My TD5 sounds at the FPR a bit noisy...



What do you think?

Thank you in advance.
Best Mario

 

T

tilly2

Well-Known Member

Posts

1,193

Location

Stafford

• Jan 8, 2021

• #2

Sounds like air mate.... is the fuel pump noisy as well

 

Last edited: Jan 8, 2021

sierrafery

Well-Known Member

Posts

17,910

Location

Arad/Romania

• Jan 8, 2021

• #3

That hissing from the FPR is normal, when you dont hear it means that the pumps runs on LP

 

T

tilly2

Well-Known Member

Posts

1,193

Location

Stafford

• Jan 9, 2021

• #4

Mine was noisy due to air in the fuel lines, and quietened down to a rushing sound once the air was released. Pump HP was fine at an indicated 4 bar.

 

sierrafery

Well-Known Member

Posts

17,910

Location

Arad/Romania

• Jan 9, 2021

• #5

It's more noise when air is present but a certain hissing sound must be there if the pump works well

 

T

tilly2

Well-Known Member

Posts

1,193

Location

Stafford

• Jan 9, 2021

• #6

I agree, the hissing sound is perfectly normal as fuel flows through the regulator. It was the pop pop pop gurgle that indicated air...