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[DIY] BMW N52 Disa Valve Replacement & Test With Inpa! 

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If you have a 3 stage intake on a BMW N52 engine, then you have 2 DISA valves. These valves open and close depending on the RPM and Throttle to get better fuel economy and torque in the lower rpm range while being able to open up fully to get more horsepower in the higher RPM range. The problem is they fall apart after a while, the plastic pin can break in the flap and go into your engine if you dont catch it soon (like I did). Here is how you replace your Disa Valve and test it with inpa.
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29 сен 2024

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Комментарии : 64   
@priit7777
@priit7777 5 месяцев назад
Sometimes those valves give no error codes sadly, while the flaps are not functioning correctly. Only way to be sure is to pull them out and do the actuation test and physically look and confirm, that the valves fully close and open.
@buildanddrive
@buildanddrive 4 месяца назад
Yes, very true. I had one code for disa and I cleared it, then it only came back once. I think the flap breaks and then the shaft can turn freely again so the ECU thinks "the disa flap is turning" so there's no problem and it doesn't give you the code anymore. Good point.
@maconnowzari3472
@maconnowzari3472 Месяц назад
this is very true. BOTH my disas are broken and the motor is not able to turn the flaps, yet my car does not throw any codes at all.
@7up821
@7up821 5 месяцев назад
Les comparto mi experiencia y solución: Tengo un BMW 530i (E60) con motor n52... Todo comenzó con el clásico chillido que hace el vehículo cuando la válvula pcv está dañada, así lo dejé pensando que era alguna polea, le cambié la banda y la polea loca y el chillido seguía, otro síntoma es que el vehículo de la nada se me apagaba, y comence a notar que el consumo de gasolina no era el óptimo, lo volvía a encender y andaba de nuevo, después hice la prueba con el motor encendido intentaba quitar el tapón del aceite y era tanta la succión que a veces ni siquiera lo podía quitar, lo que me llevó a la conclusión de que la válvula pcv estaba dañada... Después cambie la pcv (en estos motores se cambia la tapa de punterías completa, ya que la pcv viene integrada a la tapa), y asunto arreglado, se quitó el chillido y dejó de apagarse de la nada, hasta aquí todo bien.... Pasó el tiempo y noté que el consumo de gasolina estaba muy elevado y el carro comenzó a hacerme otros síntomas, ralentí inestable, y cuando el motor caía a las 600-700 rpm, el coche comenzaba a vibrar, pero era una vibración excesiva en general, adentro se escuchaba demasiado, el volante, tablero, el habitáculo vibraba mucho y sentí que el carro tenía pérdida de potencia, Check engine encendido con código de falla 2AA9, pero ojo!!, Primero lo escanee con un escáner clásico, actron sencillo y no arrojaba código, hasta que le metí un escáner más completo y con este si lo arrojó, por lo que recomiendo que lo escaneen con el mejor posible... Después quité las 2 válvulas disa y sorpresa!, todo el colector de admisión tenía residuos de aceite, quite el sistema de admision, le hice su limpieza, probé las disa y estaban atascadas, las abrí para checarlas por dentro y que creen?...la disa primaria tenía ya el motor oxidado y con residuos de aceite, le hice su limpieza y volvió a la vida!, pero la secundaria estaba inundada de aceite! Y la tarjeta electrónica que lleva se estropeó, solo pude rescatar la disa primaria, así que preferí comprar las 2 disa usadas en buen estado y originales, que nuevas genéricas... Después hice las pruebas para checar las válvulas, es importante que hagan la prueba de esta manera: coloquen las disa usadas en su lugar pero sin conectar, teniendo las disa nuevas afuera, les puse sus conectores para poder observarlas, eché a andar el vehículo y la primaria cerró por completo y se mantuvo cerrada en ralentí (así debe ser), y la secundaria cerró entre las 3500 y 4500 rpm (así debe ser también), y dependiendo las rpm están abriendo y cerrando todo el tiempo, por lo que concluí que estaban en perfecto estado, ya solo armé todo nuevamente y asunto arreglado, el coche anda perfecto, y ya no tiene ningún síntoma que les mencioné, le borré el código y ya no apareció más.. En conclusión, cuando noten el primer síntoma o que la pcv comienza a dar problemas, no duden en cambiarla inmediatamente!!, esto les evitará problemas con las disa y créanme, les ahorrará bastante tiempo y dinero (disa nuevas, gasto de gasolina innecesaria, sensores, etc)... Si en algo les puedo colaborar, estoy a la orden, saludos!
@buildanddrive
@buildanddrive 4 месяца назад
Thanks for the information. My fuel consumption is a bit higher than normal now. I suggest also smoke testing the engine to find where the air is leaking from. I made a video and will try this again.
@jsl3223
@jsl3223 2 месяца назад
Gracias Excelente información
@Key-z2x
@Key-z2x 6 месяцев назад
My n52 clicks sort of like a clock every other second. I only notice it at idle when I'm outside the car, would it be this? I'm at 266k miles. Kind of sounds like an electric motor is stuck and its trying to move every other second.
@buildanddrive
@buildanddrive 6 месяцев назад
Can you send me a video on Instagram?
@Stoned_Bic
@Stoned_Bic 8 месяцев назад
May i ask why ur seatbelt and airbag on? I wana know i got a long stupid story and want more info to pin point the problem that was before another problem that occurred
@buildanddrive
@buildanddrive 8 месяцев назад
It took a while to figure out but was the clock spring circuit that failed. You'll have to check your seatbelt circuits, airbag and clockspring. It could also be the airbag module itself. I show how to fix it here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-_K9EA79MLpY.html
@jeffreywin584
@jeffreywin584 4 месяца назад
Great video
@buildanddrive
@buildanddrive 4 месяца назад
Merci jeffrey
@Tianxiao-un3th
@Tianxiao-un3th 5 месяцев назад
What code reader do you use? regular OBD or something specially for BMW
@buildanddrive
@buildanddrive 5 месяцев назад
Obd2 cable for BMWs. depending on which model bmw you have, you need to get the right cable. Some cars have the dcan bus system you need to be able to integrate with.
@tomasis7
@tomasis7 Год назад
what brand did you buy? I might modify flaps instead since DISAS so expensive so better buy DIY flaps kit from US or Ukraine :)
@buildanddrive
@buildanddrive Год назад
Yes, you can buy the kit with the long metal pin and rebuild it. The brand was some Chinese brand off eBay.
@rassez1253
@rassez1253 Год назад
I have same issue. Is it bad if i dont find the plastic pin. It can be in intake manifold. Do I need to take intake manifold off and try to find it?
@buildanddrive
@buildanddrive Год назад
If you want to, did you find the flap at least?
@rassez1253
@rassez1253 Год назад
@@buildanddrive yea i found it! I wiil try to find the plastic pin but if i dont find it inside the intake manifold then I dont know where it can be. I think the pin has been loose like 2000km so I dont think that im going to find it but I still want to try.
@razvan1927
@razvan1927 7 месяцев назад
Don't bother , the plastic pin has been sucked in engine , this happen to me , but the engine is running normal that means the pin was melted and gone into exhust , luckly this disa has plastic pin if it was metal I was screwed@@rassez1253
@David-bg7xb
@David-bg7xb 12 дней назад
Can someone tell me how i can get this inpa diagnose ? 😊
@buildanddrive
@buildanddrive 12 дней назад
Google mikes bmw tools install
@georgioskapoglis5261
@georgioskapoglis5261 6 месяцев назад
We’re you concerned at all that the pin snapped? It did on mine too and people say that it might end up in the engine
@buildanddrive
@buildanddrive 6 месяцев назад
Very concerned. I thought it may have damaged a valve or something. Since it was so small and plastic, I assume it went through the engine with no problems. Im glad I caught the problem early.
@Saicopateful
@Saicopateful Год назад
From my experience generic Disa valve is a bad idea. It's better to buy a used original part with the updated (latest) part number.
@buildanddrive
@buildanddrive Год назад
Yep, but I didn't want to pay an insane amount of money. Funny thing is, the seals in this Chinese part failed after a year. I had idle issues and had to silicone it 😆
@davidtorres7071
@davidtorres7071 16 дней назад
So it’s not supposed to have play at all right
@buildanddrive
@buildanddrive 15 дней назад
None
@saadareeb4631
@saadareeb4631 4 месяца назад
Excellent content, where did you access inpa from?
@buildanddrive
@buildanddrive 4 месяца назад
Search for 'mikes easy bmw tools' and see if it works for you. Been a few years since I had to install it.
@razvan1927
@razvan1927 7 месяцев назад
Hello ! I have a problem, i repaired my disa valve and i installed it on my car.I checked the disa valve with the inpa and it is working but when i start the engine the flap it doesn’t close. What to do to fix this ? Thank you!
@buildanddrive
@buildanddrive 7 месяцев назад
Maybe reset disa adaptations in inpa
@razvan1927
@razvan1927 7 месяцев назад
@@buildanddrive do you have any videos of how to reset adaption only for disa? P.S. I found that it is working in reverse, when engine starts the valve is open when I rev the engine the valve is closing … I could installed the valve wrong ?
@razvan1927
@razvan1927 7 месяцев назад
@@buildanddrive I founded the problem, I didn't know that the actuator of the disa valve have a single position and if you reverse it will open the valve when it should close. Thank you for your answer!
@SujoyShivde
@SujoyShivde Год назад
I recently bought a 135k 328i, and I noticed a few crackling sounds during acceleration. From your videos, it might just be the Disa valve, but mines an N51
@buildanddrive
@buildanddrive Год назад
Does it sound similar to the video?
@SujoyShivde
@SujoyShivde Год назад
​@@buildanddriveYes, sounds quite similar. But feels more like a slight crackle which gets better after the engine is hot
@fadeddavid8356
@fadeddavid8356 7 месяцев назад
Only the 3 stage manifold has the disa valves ?
@buildanddrive
@buildanddrive 7 месяцев назад
2 stage manifold also has 1 disa valve on the outer side
@GyuBence11
@GyuBence11 10 месяцев назад
Hi, do you need to “teach” the new Disa after change, or you just change it and then it’s finish?
@buildanddrive
@buildanddrive 10 месяцев назад
You just change it. I think It automatically does a check when you start the car. If there is a problem, it throws a code
@jasan-xq2lk
@jasan-xq2lk 7 месяцев назад
@@buildanddriveI changed my disa valve, and I’m still having the rough idle. Even though that was the issue, the disa was literally broken. What do I do?
@buildanddrive
@buildanddrive 7 месяцев назад
@@jasan-xq2lk check my channel for a smoke test. Find the air leaks in your intake/engine
@marcinstasiak6821
@marcinstasiak6821 4 месяца назад
Czy można jeździć z odłączoną dużą disą
@octuple187
@octuple187 Год назад
Please share the link for the DISA valve you purchased!
@buildanddrive
@buildanddrive Год назад
No, the seals in this disa valve failed after a year. Get a mahle or valeo part instead if you really want to keep the car a long time
@octuple187
@octuple187 Год назад
@@buildanddrive How do you find out which brands are OEM?
@buildanddrive
@buildanddrive Год назад
Normally Valeo or Malhe are OEM spec
@omar1990seattle
@omar1990seattle Год назад
Nice video 📹 👍
@buildanddrive
@buildanddrive Год назад
Thanks Omar! 🙏🏽
@Rain_Zima
@Rain_Zima 7 месяцев назад
Maybe a bit late to the party but the oil in the intake indicates either a bad/worn CCV or a CCV without heater hoses. Sitting for a longer period of time, then starting will cause oil in the intake on the N52 as well. Usually a bad CCV works it's way down the line and kills the DISA valves too.
@Rain_Zima
@Rain_Zima 7 месяцев назад
Also pothole damage is known for killing the CCV and DISA valves so if your bmw has been crashed or damaged in some way it's very recommended to just outright replace these parts even if they aren't immediately showing problems, because they probably will.
@buildanddrive
@buildanddrive 7 месяцев назад
Didnt know about the pothole thing. CCV failed every 2 years so yes, eventually it killed both DISA valves.
@alpinen52ny79
@alpinen52ny79 6 месяцев назад
Looking for help, I had a code related to tank ventilation, I changed the part but after a month it came back again with code related to tank ventilation, this is the second time changing that part in a month,I don't know what could be happening, I always use gasoline 93.
@buildanddrive
@buildanddrive 6 месяцев назад
What's is the code?
@alpinen52ny79
@alpinen52ny79 6 месяцев назад
@@buildanddrive 2A1A- TANK VENTILATION FUNCTION.
@amg11901
@amg11901 Год назад
🎉
@buildanddrive
@buildanddrive Год назад
💪🏽
@ykstayfaded
@ykstayfaded Год назад
Do you know where the 872-405 A wire goes and the 7507524.9 I've been having trouble finding the place to plug it in
@buildanddrive
@buildanddrive Год назад
Can you send me a photo on Instagram?
@ykstayfaded
@ykstayfaded Год назад
@@buildanddrive turns out i had a 330i manifold on my 328i so i got the wrong manifold which didnt have the 2 orange sensor wire plugins so i ordered a 330i one and it should be running after that
@patricksmith3761
@patricksmith3761 4 месяца назад
Where did you get your Inpa program from?
@buildanddrive
@buildanddrive 4 месяца назад
Google mikes bmw tools and you'll need to buy a obd2 cable.
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