1.4 tdci fiesta style 2008 knocking sound

1.4 tdci fiesta style 2008 knocking sound

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Delta-Tango

Original Poster:

70 posts

97 months

Friday 20th November 2020
quotequote all
hi i have a 2008 ford fiesta 1.4 tdci.. every time i press the gas pedal down, there is a noticeable single knock. this happens in 1st, 2nd and 3rd gears, not in 4th or 5th. it isn't just when changing gears, it's every time the gas pedal is pressed. took it to 2 mechanics, and after almost a week at each place, neither have any clue what it is. they said it sounds like it's coming from behind the dashboard. any ideas?

SteBrown91

2,568 posts

136 months

Saturday 21st November 2020
quotequote all
Knackered engine mount perhaps?

Delta-Tango

Original Poster:

70 posts

97 months

Saturday 21st November 2020
quotequote all
looked up loads of videos of worn out engine mounts and the engine clunks/moves a lot.

mine moves a tiny bit because the mounts are slightly worn, but there's no clunk, it's a singular knock.

took it for a drive to try spot a pattern and it's mainly in lower revs up to 3000rpm, including just setting off with just clutch control and no gas. doesn't really happen when at a constant speed going 4th to 5th, and doesn't happen when going in reverse.