Misfiring problem

[romin]

2012 Yeti 1.6 TDI. About a year ago, we replaced the air flow meter with a aftermarket product because the glow plug light did not go out. There was a problem that started right after this.
For a year now, after starting the engine when it is cold, when I give gas while driving, it cuts off the gas very suddenly and leans forward. It continues in the first, second and third gears until the engine recovers with each accelerator. After 5-6 minutes, when the engine warms up and recovers, there is no problem. If I start the engine again after 5-6 hours, there is no problem, but if I start it after stopping for 12 hours or a day, the same problem occurs again. When I connect it to the computer, nothing comes out, and there is nothing on the fault lights.
The mechanic can't say anything definite, he says you have to leave the vehicle, but when he does, he will see what I told him, and he won't be sure, so I didn't let him go. I think the problem is caused by the air flow meter, but since the original one was 5000 lira, I did not want to order it without being sure.

I would be very happy if someone with knowledge could help.

[b1ackb1rd]

Are you sure it's not going into limp mode when it suddenly stops?

 

When I first had my 1.6tdi it wouldn't rev over 2k without going into limp mode, it's taken a while and a lot of fuel additives, DPF cleaner and a remap to get it to run properly. 

[romin]

Thanks for your interest,

no power lost or lights about limp mode.

[Trevor M]

I had a misfire when cold, although in my case it felt more like a petrol engine firing on only three cylinders rather than a complete shut off of the fuel. Used Vcds to look at injector variations when cold and one seemed significantly different to the others. I had these removed and checked by a diesel specialist who said that although the spay patterns looked ok, one had an excessive leak off. This injector was replaced and the problem was solved.

This only happened on initial cold start up and lasted for probably no further than half a mile, sometimes less. The car had done around 80,000 miles at the time, so as I thought injectors should last considerably longer than this I declined the offer to replace all injectors.

In your case you say the problem began straight after changing the Air Flow Meter; as you have indicated this is likely to be a good indication of where the problem lies.

Hope youget it sorted.

[Carlodiesel]

17 hours ago, romin said:

Thanks for your interest,

no power lost or lights about limp mode.

romin, has your Yeti had the diesel gate mods done to it?