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Ford Focus ST Technical Discussion
Focus ST Mk2 Technical Discussion
Mk2 Engine, Exhaust and Induction
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Sticky
2 Cracked Liners and a Block Mod.....
WelshGeoff
Aug 24, 2018
Locked
4
5
6
112
27K
Jul 28, 2022
by
Alb
Sticky
Liners, cracks & tuning
Matt_C
Apr 24, 2013
14
15
16
306
53K
Aug 11, 2021
by
kiemuloly
Sticky
Oil Diaphragm Replacement
D87
Sep 25, 2017
Locked
2
3
53
18K
Oct 27, 2020
by
Gazzaelb
T
Sticky
Which CAIS?
Thompson31
Oct 28, 2013
2
3
59
19K
Aug 11, 2019
by
STokes
T
Sticky
Focus St Exhausts Thread!
TheCustomTouch
Jun 1, 2008
5
6
7
131
46K
Apr 21, 2019
by
REBUILT-RIOT
Sticky
I found this site with some excellent guides
teflonbilly
Nov 25, 2018
3
5K
Nov 26, 2018
by
NigelStap
Sticky
Block Mod done by me... some interesting observations
R1CKSO
Jul 1, 2017
7
5K
Jul 1, 2017
by
Darren Bowen
R
Sticky
Thinking Of Tuning?
Rick
Oct 2, 2007
3
4
5
89
37K
Jan 20, 2017
by
tommy4513
Sticky
MK 2 STOC TOP 20 Power Board
Dan-RST
Feb 16, 2014
5
6
7
123
26K
Dec 13, 2016
by
AFTER AN ST
Sticky
Dump Valves - The Ultimate Thread
Sean B
Nov 14, 2014
2
3
59
23K
Aug 2, 2016
by
Andy and Kirsty
Sticky
Exhaust Explained
Smiffy
Jul 2, 2009
2
3
48
24K
Jan 26, 2015
by
tc-mark
Sticky
Sleeve size to refit original exhaust.
Janner
Mar 28, 2014
0
1K
Mar 28, 2014
by
Janner
Sticky
Dsci Induction Kit + Rs Ecu Cover
Martin@TeamTorquesteer
Aug 22, 2009
2
3
45
26K
Dec 11, 2012
by
KAZUYADOG
S
Sticky
Turbo Idiots guide - All you need to know
Show Time
Mar 18, 2006
2
26
15K
Feb 13, 2011
by
sergeT5
T
Sticky
St Tuning Faq
thekirbyfake
May 18, 2007
Locked
0
11K
May 18, 2007
by
thekirbyfake
MK2
Cam shaft oils seals & cover
Bobbym
13h ago
3
78
2h ago
by
kenny_st
MK2
Where does the ST225 commonly leak oil from?
XR5_2.5
3d ago
3
133
1d ago
by
XR5_2.5
MK2
"Akrapovic Exhaust" & Sports Cat Question
RayRoo55
4d ago
4
165
3d ago
by
Dabhand16
MK2
Boosting issue maybe/ Poor performance
Lhicks89
May 6, 2022
4
1K
4d ago
by
FocusFoany
Coolant Bleed Point
Bing
Jul 8, 2012
Locked
8
6K
5d ago
by
Alb
S
MK2
Oil filler cap blown off?
Steven462
Mar 9, 2024
9
543
7d ago
by
Bobbym
Oil Filter Housing
jboy
Mar 9, 2024
17
300
Mar 11, 2024
by
phantomr32
B
Help! MAF code only showing at certain speeds?
Badger_ST2
Mar 5, 2024
5
198
Mar 11, 2024
by
Badger_ST2
S
Rough idling slight lack of boost when mapped imap tool.
Swangang69
Mar 9, 2024
3
145
Mar 11, 2024
by
FastEddie
Throttle Pedal Problem SOLVED!!!
Mart1976
Nov 24, 2011
10
4K
Mar 8, 2024
by
NigelStap
Oil filter housing leak and boost issue
Mattst3seagrey
Jan 13, 2020
18
5K
Mar 5, 2024
by
V333ASY
Heater Hose - anyone had an issue/replaced??
D87
Jan 17, 2020
9
4K
Mar 1, 2024
by
Nikkykitten
Engine temperature reading 52c on diagnostic when cold
teflonbilly
Feb 20, 2024
7
282
Feb 28, 2024
by
teflonbilly
M
Oil
Marty36
Feb 27, 2024
2
167
Feb 27, 2024
by
Marty36
MK2
Various issues- Check engine light and strange noise
XR5_2.5
Feb 24, 2024
2
197
Feb 25, 2024
by
XR5_2.5
Mountune cast plenum RS ecu bracket
MR290jsy
Feb 16, 2024
3
207
Feb 20, 2024
by
MR290jsy
P
MK2
Catalytic converter advice
PS9ST225
Feb 12, 2024
3
211
Feb 13, 2024
by
Andy and Kirsty
Which CAT?
FoxtrotOscar
Feb 10, 2024
4
242
Feb 12, 2024
by
NickFST3
500bhp, stock liners?
McGherkin
Feb 7, 2024
3
289
Feb 8, 2024
by
McGherkin
P
Non starting P0201, P0202, P0203, P0204, P0205 - Fuel pump or sender?
PassionFingers
Jan 31, 2024
11
285
Feb 2, 2024
by
Alexander29
A
MK2
2010 Ford Focus ST225 - P2127 Fault code
Alfonszo
Jan 28, 2024
8
703
Jan 31, 2024
by
Alfonszo
Volvo S40 T5 same as ST225?
Terry Brown
Jul 23, 2023
8
2K
Jan 28, 2024
by
McGherkin
J
MK2
Engine Malfunction Reduced Acceleration
J Warden
Jan 21, 2024
15
503
Jan 23, 2024
by
Oranjemobiel
P
Mod-X ST225 - overfuelling and down on power
PassionFingers
Jan 18, 2024
1
135
Jan 19, 2024
by
Bigayal
S
MK2
Intermittent Misfire with no codes
shilkahc
Jan 15, 2024
7
331
Jan 16, 2024
by
shilkahc
M
RS spark plugs
MattyMk2ST
Apr 21, 2016
10
419
Jan 16, 2024
by
Dabhand16
MK2
Can someone identify this hose?
Ford.Focus.ST
Jul 16, 2023
7
781
Jan 15, 2024
by
Ford.Focus.ST
R
Fuel Pressure
Rossymarce19
Jan 14, 2024
0
67
Jan 14, 2024
by
Rossymarce19
MK2
Small coolant leak
Mikoogle
Jan 6, 2024
10
470
Jan 8, 2024
by
the radman
W
Oil filter housing help
Westonfocusst
May 21, 2019
18
2K
Jan 8, 2024
by
kenny_st
Exhaust question
Teuchter77
Jan 6, 2024
5
305
Jan 8, 2024
by
Alexander29
Sad day!
Vauno
Jan 5, 2024
20
682
Jan 6, 2024
by
CFCSTEVE
Cold air
Teuchter77
Jan 3, 2024
10
281
Jan 5, 2024
by
NickFST3
Climate Control Problems
noddy10
Dec 19, 2023
19
661
Jan 4, 2024
by
noddy10
M
Ignition timing an spark advance readings
Martin st
Jul 14, 2023
5
793
Jan 1, 2024
by
Martin st
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Mk2 Engine, Exhaust and Induction
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