Motor THP in problemi

[dvorjan]

No, in se par slik, kako so zadeve videti v motorju cez nekaj casa, ce se toci nekakovostno gorivo in uporablja slabo olje (ali pa se olja ne menja redno). Se najboljsi nasvet bi bil tociti 100-oktansko gorivo in olje menjati na 10-15 tisoc kilometrov, odvisno od vrste vozenj. Daljse kot so relacija, poznejsa je lahko menjava.

[dvorjan]

Ja, ce bo imel pa svojo temo motor 1.6 THP, potem pa kar zacnimo, kaj vse lahko preseneti lastnike. =)

THP engine boost control valve problems

The boost control valve controls the turbo's wastegate actuator, the throttle pedal of the turbo.
On the THP engine the boost control valve controls the amount of vacuum that goes through from the vacuum pump
to the wastegate actuator. The more vacuum the more boost the turbo produces.

This valve gets stuck sometimes. Causing many problems, producing excessive boost or no boost at all as a result.
 
slika 1: 1.6 Turbo - boost control valve (fully assembled)

The boost valve assembled: Three vacuum ports for controlling the wastegate actuator and one power clip from the ECU, for controlling its magnetic coil.
 
slika 2: 1.6 Turbo - boost control valve

To open the valve you need to remove the metal clip holding its top part to the valve body. The red silicon diaphragm is the top of its inner part.  

Principle of operation
By controlling the valve's coil,  the inner cylinder moves up and down following the ECU's command and letting more or less vacuum go through.

Fault finding
The cylinder is both scratched and dirty. The cylinder liner is also scratched and has dirt inside (oil residues).

slika 3: 1.6 Turbo - boost control valve (in pieces)

This is the boost control valve split in its four parts:
1. Top cover with 2 ports
2. Valve body, with magnetic coil
3. Control cylinder and silicone diaphragm
4. Air filter

[dvorjan]

1.6 THP in svecke

Znalci tudi porocajo, da velja svecke zamenjati oziroma predelati. In sicer zmanjsati razmak, da lazje iskra preskoci. Za tiste, ki imajo radi visoke obrate motorja (velja tudi za VTi tip motorja), pa se priporocajo svecke "Iridium", recimo tele:
http://www.ngksparkplugs.com/products/spark_plugs/iridiumix.asp

[Pyr0Beast]

>Znalci tudi porocajo, da velja svecke zamenjati oziroma predelati. In sicer zmanjsati razmak, da lazje iskra preskoci.
Precej neumna zadeva.

S tem bi samo povečal zanesljivost vžiga (zanemarljivo) a zmanjšal samo efektivnost iskre (manj mešanice gre med iskriščema in izgorevanje je slabše)

>No, in se par slik, kako so zadeve videti v motorju cez nekaj casa, ce se toci nekakovostno gorivo in uporablja slabo olje (ali pa se olja ne menja redno). Se najboljsi nasvet bi bil tociti 100-oktansko gorivo in olje menjati na 10-15 tisoc kilometrov, odvisno od vrste vozenj. Daljse kot so relacija, poznejsa je lahko menjava.
To se mi zdi predvsem efekt vožnje v prenizkih obratih (nizka temperatura izpušnih plinov) in premalo 'tiščanja' mašine vsake kvatre

Samo ventilom ne bo hudega, so izolirani in se bodo zaradi vročine tako obrabljali manj