Have you ever put a case/NH tractor in reverse when it’s not warmed up with a deleted engine? It can fill an enclosed space up in a hurry.No ag FPT engine has a Diesel Particulate Filter to plug.
Do you mean the SCR catalyzer canister? I guess it could theoretically plug up, but that's highly unlikely. There's not much to it except baffles and SCR nozzles. As I said, Case engines don't have any filters because they don't need them. They are already soot free because of the higher exhaust and combustion temperatures they run at (which increases efficiency compared to EGR) and just use SCR to treat the NOx (which is odorless). Other than potentially destroying the DEF injectors, I can't think of any problems in just leaving the canister alone, although the Tier 4F canister is huge on the tractors and would sure look better replaced with a muffler.
Truck engines are a very different story. I don't know of any truck engine that does not do EGR with DPF and SCR today. So if you delete, it is essential to remove the DPF (which is probably integrated with the SCR canister) entirely. One thing you'll notice is a deleted Tier 4 truck engine will smoke you out in the shop because it's quite dirty without the filtering, but a deleted Case engine won't (although the NOx isn't all that good for the lungs either long term).
I have a little experience with this. My tier 4A New Holland T9.615 developed an intermittent miss or I would call hiccup when warmed up. It would puff a little smoke that you could see in your shadow but you usually couldnt even hear it. This unit did have a def puck on it. My dealer could not find the problem and told me it is possible I have a plugged up exhaust. They would not go any further until I looked at or removed the inners of the exhaust. Well I opened it up and it was a clean as a whistle. This is after 4 years with a puck installed. For those not familiar with the inside, it has 3 different layers of what I would call a honey comb ceramic material with small openings. Picture each layer about the thickness of the air filters in these tractors. It is not easy to get to the top one. I couldnt believe how clean it was, cause like you say black smoke can be seen at times. But it was bright white with no trace of soot on any of the 3 layers.im wondering if anyone has had issues with a tier4 case dpf plugging after delete
so what do you mean by a def puck installedI have a little experience with this. My tier 4A New Holland T9.615 developed an intermittent miss or I would call hiccup when warmed up. It would puff a little smoke that you could see in your shadow but you usually couldnt even hear it. This unit did have a def puck on it. My dealer could not find the problem and told me it is possible I have a plugged up exhaust. They would not go any further until I looked at or removed the inners of the exhaust. Well I opened it up and it was a clean as a whistle. This is after 4 years with a puck installed. For those not familiar with the inside, it has 3 different layers of what I would call a honey comb ceramic material with small openings. Picture each layer about the thickness of the air filters in these tractors. It is not easy to get to the top one. I couldnt believe how clean it was, cause like you say black smoke can be seen at times. But it was bright white with no trace of soot on any of the 3 layers.
So, what turned into over 2 years of chasing this miss, ended up being a wiring harness that had rubbed through. I found out this harness was a very common problem on the red and blue four wheel drives from a different dealerships service manager. I knew it was common when my dealer had the harness in stock and this is for blue which is a different part # than a red one.