Hot Start Valve
It sits on the top left part of the intake manifold, covered by the plastic 'turbo' cover. It's meant to alter the FPR vacuum so that the fuelling is correct when starting the engine while it's very hot (it bypasses the throttle vacuum, effectively increasing fuel pressure by 0.6 bar).
But that's meant to happen at 120C coolant temperature. Now who in their right minds would let their engine run until the temp exceeds 110C, is beyond me. Trying to start this engine at 120C is madness, begging the Gods to warp the head. You should let it cool down to below 100C first.
On older engines this valve can malfunction, affecting the FPR vacuum when it's not supposed to, creating fuelling problems that are hard to isolate.
The solution is to isolate it from the vacuum loop, so it can do no harm:
Both front and side-facing vacuum connectors can be left undone. The electric plug can stay connected, so the ECU doesn't register a fault.
Everything else stays connected to the vacuum Tee lines, but the HSV is left out in the cold.
Job done.
Según lo que me pareció entender, esta valvula actua para ayudar al arranque del coche cuando está a 120º de temperatura el anticongelante?¿?¿? casi nada....
A parte parece que dice que si le da por estropearse puede crear problemas de combustión.
Si todo esto es cierto y yo no me estoy equivocando, supongo que al desconectar los dos tubitos que dice para anularla, podremos utilizar el que viene de la valvula de descarga de serie del turbo al cuerpo del acelerador para conectar este circuito a la valvula de descarga de doble piston que podemos acoplar a nuestros coches, y asi no tener que estar haciendo nuevos empalmes ¿no?
Saludos y perdon por el tocho
