First day it felt like i was suddenly engine braking (100% of the time). Next day I changed fuel filter. Half a day I drove no problems whatsoever. The second half of the day problem came back, but in slightly different form. It was just as I would either drop half throttle or go engine braking, some moments it went ok(10% of the time). Next day it changed proportions again. 30% car acted normal 40% engine braking and other 30% like half throttle. Since then proportions changed following: now 60% of the time car acts normal 5% feels like engine braking, and 35% feels like traction control is in(but it is not)
All the problems come with dropped fuel rail pressure.
Anyways, engine idles no problem. RPM wobble a bit if you drop to idle right after that 5% engine braking situation. Otherwise idles normally, does not stall. Starts also very nicely and does not stutter right after startup.
Since problem started I've gone through 60 L of improved diesel with cleansing additives and after that 40L of regular diesel. All the problems started after I put in those 60l of improved fuel and car sat with little to no drive for 2 days in 30C degree heat.
Somehow like this
Car has 238 thousand KM that is around 165 thousand miles
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