Karštam varikliui sunkiai kuriantis atjungus temperatūrinį daviklį pradeda kurtis iš „puse oboroto“, reiškia mes visi sergame ta pačia liga.
Priežastis: kuriant šaltą variklį, kompas supranta kad šalta, todėl kaitina žvakes, paduoda riebesni kuro mišinį ir t.t... Kuriant šiltą, jei starteris nepasiekia 250 aps/min yra nepaduodamas kuras (informacija iš interneto), nors kalbėjau su vienu meistru, pagal jį turį būti ne mažiau 300 aps/min. Bandžiau matuoti apsisukimus VCDS pagalba, nelabai sekėsi, bet spėjau pastebėti 200...230....290 ir kuriasi.

Kas liečia žvakių pakaitinimą, ten ne viskas taip trumpai.

Konkrečiai BKD varikliui su 16V
PDF: https://dl.dropboxusercontent.com/u/50304340/SSP_316.pdf

Iš to pdf, apie žvakes:

Preglow
When the ignition is switched on and temperature is below 14°C, the preglow system is activated.

To do this, the engine control unit sends a PWM signal to the glow plug control unit. The glow plugs will then also be activated by the glow plug control unit by means of a PWM signal.

In the first stage of preglowing, the glow plugs are energised for a maximum of 2 seconds with approx. 11 volts. Thereafter, the glow plugs are supplied with voltage by the glow plug control unit, depending on the relevant operating conditions.

Extended glow period
Each time the engine is started, an extended glow period is activated to reduce the combustion noise and amount of hydrocarbon emissions.

Actuation of the glow plugs is adjusted by the
engine control unit depending on engine load
and speed.

When the engine is running, the glow plug is
cooled by the flow of air at load changes. Furthermore, glow plug temperature drops as engine speed increases if glow plug voltage remains constant.

To compensate for this cooling effect, the voltage is increased using a map in the engine control unit based on load and engine speed.

From a coolant temperature of 20° C, there is no extended glow period. After a maximum of 3 minutes, the extended glow period is cancelled.