Rapidly increasing high exhaust temperature?
So I am having a trouble with one cylinder exhaust temperature increasing rapidly out of nowhere up to 200 degrees deviation.But cylinder peak pressure looks same during this period. I can’t understand how because of there is more combustion or fuel in the exhaust side ,peak pressure should be effected by this too.
And this started to happened after I did valve clearance setting. First I suspected the injector and changed it but its still same.On high load(around 60%) this thing happens.
While running normal, I can’t understand why exhaust would go start to increase fast.
I dont know if it could be fuel pump or just the sensor but I am also worried during valve clearance,something may happened.Something dropped in somewhere like under springs or pushrod area or something not right.Still I cant figure out this relation between increasing exh temp and stable peak pressure .
I am open to any ideas or suggestions .
Dg:wartsila l20