No Spark In Cyllinder 2 And 4

[Zigy]

Hi all,

I have a big problem with my Previa 2001. I only drove it for 2 weeks and then I got a problem with the engine, there was a crack in a head, so I changed the head of the engine, and now where are no sparks in second and forth cyllinders. I changed the crank shaft sensor and ECU and all sensors in the head and spark plugs and coils and it's still the same. Would anybody have an idea what could be wrong couse I run out of ideas?

Thanks

[Phoenix999]

Have you checked the HT leads to see if they are broken or correctly fitted

[Zigy]

I found the problem. The engine chain was fitted wrongly. Thanks for your help