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Dr. Zoom

uk
Posts: 1115

Location: United Kingdom
Occupation: Mr Stance's workshop
Age: 21
V$: Banked
#142087   2018-05-25 07:54          
Hm, my Fiesta have bit slow starting and loss power at high speed. I discover there service way over-due because the spark plug look like worn out which mean it won't burn fuel and air very well and it possible threw cat faulty code from O2 sensor. I replace air filter, oil filter, pollen filter, changed oil and replace all 4 spark plugs, then she started up quicker and bought all power back. Could be worth check service due date?! Oil on your spark plug may need compression test, it could be failure piston, gasket, or worn valve guild.

Oil spark plug = Harder to ignition air and fuel mixture = Weaker starting.

(Underline is possible faulty that have oily on spark plug)


Car that I own in real: Ford Fiesta 54 plate 1.4 Flame.
Formerly known as Hidden Username.