Suzuki Grand Vitara 2.0 2007. - It doesn't start in the cold

Question

Hello, Suzuki Grand Vitara 2.0 103kW 2007. From time to time, the car does not burn on a cold engine. No fault codes, when it does not start, the controller sees the engine speed, the fluid temperature is also normal, the immo goes out. The fuel pressure was 0.5 bar too low, but after replacing...

panstalin2 · Answer

Candles cables replaced?

kubas10 · Answer

Candles ok, a separate coil for each cylinder.

panstalin2 · Answer

Battery voltage does not drop too much when starting with a cold engine? He smoked normally in the cold? Temperature sensor OK? What compression pressure on a cold engine?

kubas10 · Answer

The starter turns normally, he saw the temperature at 18oC, he saw the engine speed too, but he did not fire. I did not check the pressure in the cylinders because the engine seems to be relatively fresh, although it has an LPG sequence.

panstalin2 · Answer

If it does not light up, disconnect the clamp from the battery for 20 seconds and connect and check if it lights up from the first time. You have to write that there is LPG.

kubas10 · Answer

How does what light it?

panstalin2 · Answer

Then log in to the engine and make sure that the lambda is pairing correctly and that the lambda emulation by the LPG controller is correct.

sk700 · Answer

Connect to the gas computer and check the reducer temperature, because there may also be a situation where the controller sees higher and tries to start on gas at all costs.

alien8_6 · Answer

Just turn off the gas on the cylinder and test. These engines hate gas. If it's on the standard cylinder head, it can withstand 40,000, check the clearance.

kubas10 · Answer

The spark plugs are new and tinted black (mixture is too rich), the pressure in the cylinders on the cold engine is 11 bar.

panstalin2 · Answer

What is the reading of the engine temperature and the lambda probe parameters?

tzok · Answer

The lambda probe does not work on a cold engine, but if you feel the fuel, it probably has a distorted adaptation of the mixture composition and floods the engine when you try to start. Listen to the previous speaker and turn off the gas valve on the cylinder (important), drive out at least half a tank of gas without using the LPG system and say whether the problem has resolved.

kubas10 · Answer

So I will.

panstalin2 · Answer

It is possible to start the cold engine on gas only - in emergency mode without gas for a while ???
(so as not to freeze the reducer)

Turn on the ignition and hold down the gas button for 10s. and turn on the starter - will it ignite immediately?

kubas10 · Answer

I turned off the gas on the cylinder, burned the rest from the evaporator and on the cold engine running on gasoline at the peak start-up time, the injection time was 40ms and fell after about 1 second to 5ms and the car fired surprisingly after 2 days.

Added after 34 [seconds]:

The battery was disconnected.

tzok · Answer

So there are 2 options - either a poorly calibrated installation changes the injection adaptation of the petrol controller, or there is some leakage in the valves and LPG gets into the manifold when the vehicle is stopped.

panstalin2 · Answer

On the next morning, he may smell the air filter - whether it stinks of gas on a cold one.

kubas10 · Answer

The client will drive 2 weeks on petrol on a screwed bottle and we will see, maybe the adaptation values will return to normal and the car will start to start normally.

Suzuki Grand Vitara 2.0 2007. - It doesn't start in the cold

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