engine misfire problem

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10-21-15, 10:52 AM

Hamadeh

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engine misfire problem

Hello ,,

I have a strange problem which i need help to solve it .

The engine is running perfect in ideal , but when driving about 3 kilometres , it starts shaking and got obd code ( misfire in cylinders 1 , 3 , 5 , 7 .

Checked the coils and injectors all working fine !!

The check engine light will not come on while this happend even
Any idea ?

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10-22-15, 03:44 AM

Lexus63641

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do a computer check, I am guessing this could be linked to a malfunction in the EGR valve

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12-21-15, 09:51 PM

z32

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looks like the misfire happens only on 1 side / bank of the engine. this will narrow down your possibilities.

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12-22-15, 12:22 AM

MattBianco

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Speculations:

- Faulty ignition, inclding ECU. This could be the controller, or long-term problem affecting one side and visible in an inspection of the spark plugs. It could ignition coils (make sure they are well plugged in)
- Timing chain moved/slipped
- An ECU controlling fuel injectors one side of the block not working
- Any controller affecting or a physical blocking of intake to one side
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