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Verified Tsikot Member
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March 3rd, 2017 04:24 PM #11your fuel system is not holding fuel pressure. the possibilities are:
fuel injectors are leaking- this would rresult in black sooty carbon build up at the spark plug tips;
the fuel pump check valve is no longer capable of holding pressure;
there might be an external leak along the fuel line;
the fuel injectors o-rings might be leaking around the fuel rail.
the fuel cap might be restricting airflow into the tank. if this symptom happens when the weather had been hot, then there is vacuum in the fuel tank that pulls the fuel in the rail back to the tank that would result in longer time pressurizing the fuel rail.
if you smell raw fuel around the car, that would be a result of an external fuel leak.
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March 3rd, 2017 06:01 PM #12
We have a Vios, 2010 E/AT
I've experienced what you just posted. But it occurs rarely (like once in a year).
After the engine has started, it misfires, then idles up.
Lately, I did the liberty of pulling out the spark plugs and re-gapped them. Hindi na nangyayari so far.
It seems like the casa mechanics beforehand just installed the plugs without checking the gaps. Puro out of spec lahat.
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Verified Tsikot Member
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March 5th, 2017 12:00 PM #13Long cranking before start up and long feed back before response, that explains it
sinabi moh! i hardly see my children now. when they were young, schedules were more predictable.
Traffic!