I have a 2008 Chevrolet Matiz car, 3-cylinder 0.8L engine with the following symptoms:
- Start hard the first start of the day (after 10-12 hours) then start each time from the first, if the interval is shorter 1-2-3 hours.
- the first key only spins the engine
- the second key, spins and starts, but fails.
- the third key, starts moving (stammers) and dies after 10-15 seconds
- the fourth key, starts the automatic shock, holds it for 40 seconds and stops the engine
- the fifth key, it starts and I let it go for 1 minute, I can’t go on the road immediately because it doesn’t have acceleration, the pedal is dead.
On the exhaust, it only smells of gasoline 1 minute after it has started well, but it does not emit any smoke.
I poured injector cleaning solution into the tank.
I cleaned the injectors with carburetor spray
The ECM has no active or pending errors.
- on the go when the accelerator pedal is constant at 2000-2300 rpm (50-60km / hour) in the city. a split second flashes in my nose. It’s as if the power supply is cut off or it’s too much fuel and it drowns.
I mention that I also cleaned the throttle.
- I didn’t find any fake air
- I changed the TPS and IAC sensor with new ones
- Changed spark plugs + plugs + ignition coil
What advice do you have for me to try again?
Thank you