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2009 C30 T5 puff of blue smoke after moderate acceleration

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  #1  
Old 03-28-2023, 03:51 PM
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Default 2009 C30 T5 puff of blue smoke after moderate acceleration

Hello all,

I have owned this 09 C30 for a few years. Prior owners neglected it and had poor maintenance done on it. I had the local dealer resolve a P0027 code. Ended up replacing the exhaust side VVT gear.

I have also replaced the diaphragm in the oil breather box as preventative maintenance.

What seems to happen consistently is I get a big puff of blue smoke out of the exhaust after the engine & exhaust are warmed up and I am at a steady speed and then I just give it a little extra gas. The a big puff of blue smoke. Some people have suggested it is a turbo seal. Then again at about 62,000 miles this seems too soon for this issue. Maybe prior owners used cheap oil or skipped oil changes.

Car has not CEL codes.

What do people think?
 
  #2  
Old 03-28-2023, 04:02 PM
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does the smoke happen when you floor it or after you let off the gas? do you have an automatic or manual transmission? Are you consuming any oil (ie how often do you need to add a quart?) or ever need to top off the coolant? Does the car give off any smoke on a cold start (ie first thing when cranking in the AM)?
 
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Old 03-28-2023, 04:29 PM
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I usually do not get the smoke when I floor it. It seems to be during a moderate acceleration regardless if I let off or not. But I do notice the smoke after a mini acceleration and then letting off. It's an automatic. Yes, I add oil on a regular basis. I am adding a quart every 800-1000 miles. Coolant level is staying steady. And it NEVER smokes on a cold start.
 
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Old 05-21-2023, 04:59 PM
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Default Tengo el mismo problema lo solucione temporalmente te modificando la pcv

Me pasa igual.
Volvo c30 r 2.5t 2011 con 150,000km
Pcv nueva 1 mes
Turbo nuevo, tiene 6 meses
Compresion de motor 130psi en todos los cilindros
Sellos de valvulas 6 meses de nuevo
0 fugas de vacío

Al ir en 3ra o 4ta marcha a unos 60-80km/p si piso el acelerador suave el turbo o carba 2-3 psi y sale del escape humo azul por montones, si suelto el acelerador el humo desaparece, o si aceleró más fuerte 5psi o mas hasta 12psi no existe nada de humo en el escape, si piso a fondo wot y suelto no sale humo
Si freno con motor en una pendiente nada de humo
Al arrancar nada de humo

El humo solo es al acelerar suave y el turbo mete 2-3psi pero si el motor va debajo de esa presión o por arriba de esa presión no vete nada de humo

Entonces tengo que manejar brusco para que no salga humo, lo que hice fue sacar la varilla de aceite y de esta forma no sale humo con el turbo a 3psi
Pero si piso a fondo todo el aceite saldrá por el tubo 😆 pero así ya no veré humo al escape, en este momento tengo una válvula para liberación de gases de carter al cambie te y así ya no tengo que quitar la varilla de aceite y no veo la humo en el. Escape pero el Problema que así la mezcla se vuelve rica por que el aire ya lo había detectado el maf, me estoy volviendo loco para encontrar la falla de origen del humo azul a 3psi de presión solamente
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  #5  
Old 05-24-2023, 08:08 AM
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If you have new turbo, new pcv, new valve seals, then have you ruled out clogged oil return line from the turbo or could the piston rings be causing excessive crank case pressure under certain boost conditions.

I am planning to jack up my C30 and take off the compressed air pipe from the turbo to see if there is excessive oil coming out of the turbo and I will check for free play in turbo shaft as well.
 
  #6  
Old 06-14-2023, 11:51 AM
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I am going to pull off the piping coming from the compressor side and check for excessive oil residue. And if I can see and reach it, I will see if there is excessive shaft free play on the compressor wheel. I may have an update by this weekend.
 
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Old 06-20-2023, 02:32 PM
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I seperated the metal down pipe from the rubber hose going into the intercooler. There is oil residue inside the pipe but it's not excessive. I think that rules out an oil leak from the compressor side.

 
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Old 07-05-2023, 09:43 AM
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I am planning to replace my oil pan soon as it is cracked and the epoxy fix leaks. Is it possible that an oil passage is blocked and causing my smoke issue? I will see for myself soon if there is a blockage in the oil pan...thanks everyone
 
  #9  
Old 08-24-2023, 11:04 AM
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I still have not had a chance to replace the oil pan. I did buy a used OEM oil pan that I need to clean up and get ready. I do have a new symptom. After driving for about 30 minutes I checked my oil level. As I was adding oil I noticed there was smoke coming from the oil fill cap. I am guessing this is exhaust smoke caused by a blockage in PCV system and or ports in the oil pan. Has anyone else had this issue and what fixed it? New oil breather box and or do the ports in the oil pan also get clogged over time?
 
  #10  
Old 10-05-2023, 03:00 PM
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What about trying to soak/clean the piston rings with a product like Berryman's? There are videos on Youtube on how to do this.

I might try this next oil change.
 
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Old 10-27-2023, 02:32 AM
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Lo solucione, no lo había comentado porque perdí mi acceso a la cuenta pasada, tenía el mismo problema que tu con el c30.

La explicación, recuerdo que el. Humo empezó cuando desarme pcv y múltiple de admision.
Descartaba la pcv porque llevaba ya 2 diferentes usadas y finalmente compre una nueva y el problema seguía. Hay otra pcv (check) por arriba del turbo qué llega debajo del múltiple de admision esa la destroce y puse una válvula check y tampoco se corrigió. La. Compre nueva.

Mi turbo era nuevo aparte que cuando es el turbo normalmente fugan cuando sueltas de golpe el acelerador o aveces en reelenti humean pero no er ami caso.

A mi solo me salia humo muy denso en el escape entre 3-4psi de boost si pisaba de 5 @ 16psi no salía nada de humo aunque soltara el acelerador de golpe, y debajo de 3psi tampoco nada de humo.
Bueno en resumen recorte qué entre la culata y el múltiple de admision lleva una junta de lámina. Esa junta lleva 5 laminas qué permiten el paso del aire de la pcv hacia el motor. En una de las veces que lo desarme yo doble esas láminas hacia el múltiple (pensando que así debían estar) desde ahí empezó a sacar humo, hoy desarme y doble alreves las láminas de la junta (las doble hacia la culata) y con eso desapareció el humo. Completamente no tengo nada de humo ya a 3-4psi.

Aunque después de varias pruebas ahora solo humeo 1/20 parte de lo que humeaba antes pero ahora solo me lo hace cuando voy a wot 17psi y suelto de golpe echa una bola de humo qué casi ni se nota. Podría pensar que qué es el turbo. Pero antes de desarmar el múltiple no hacía eso, así que supongo que quizá me pase de dobles en esas láminas lo que me causa ahora esa otra falla.

Comprare la junta el próximo mes y mejor la pondré nueva. Pero por mientras no más humo en bajo boost

Esta fue le problema

 
  #12  
Old 10-27-2023, 09:56 AM
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Hello,

I am glad you finally solved your mystery.

I have owned my C30 for almost 4 years and I have done a lot of maintenance on it( CV boots, both front wheel bearings, coolant over flow tank, brake rotors.....) This seems to be the last issue other than the slow leak in my epoxy repaired cracked oil pan.

So are you saying you just needed to correctly install a new exhaust manifold gasket and with a proper seal, the big puff of smoke is no more?

thanks
 
  #13  
Old 10-30-2023, 12:46 AM
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Originally Posted by MisterENB
Hello,

I am glad you finally solved your mystery.

I have owned my C30 for almost 4 years and I have done a lot of maintenance on it( CV boots, both front wheel bearings, coolant over flow tank, brake rotors.....) This seems to be the last issue other than the slow leak in my epoxy repaired cracked oil pan.

So are you saying you just needed to correctly install a new exhaust manifold gasket and with a proper seal, the big puff of smoke is no more?

thanks
Es correcto, justo hoy cambie el empaque. No pude esperar al otro mes y hoy lo compre y lo instale y por fin ahora si 0 humo, ha vuelto a la normalidad después de varios meses. Esas láminas qué lleva el empaque tienen un ángulo calculado, antes no les preste importancia, pero hoy qué me llego el empaque nuevo al observarlo entendí que si se cierran mucho causarán humo en altas Rpm, y si se abren mucho causarán mucho humo en bajas Rpm por que el turbo mete presión al carter.

​Así como me llego el empaque lo monte sin tocarlo prácticamente, salí a dar una vuelta, le estuve pisando un buen rato, lo lleve en todos los rangos de Rpm y de boost y ni una nube de huma salio,. 😎😎
Varios expertos en volvo juraban y aseguraban qué era mi pcv y turbo o el defecto general de los T5 (anillos defectuosos) después de cambiar la pcv 3 veces, y aferrarme a que mi turbo era nuevo y seguía bien y mis anillos no tenían problema ya quedo solucionado, y de la misma forma ya no fuga aceite (fugaba aceite por algún sello y por la pcv nueva) al parecer ese empaque hace un trabajo más complejo de mantener las presiones lejos del carter.

Prueba cambiándolo y quizá hasta tu fuga del cartes disminuya bastante al no tener presión excesiva


 
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Old 11-20-2023, 11:08 AM
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I am trying to share some pics from my throttle body, intake port and air box. Does this look like normal oil residue or too much?

bottom of air filter housing

Throttle body


air intake....is this normal?
 
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  #15  
Old 11-27-2023, 03:58 AM
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Es normal solo hay que limpiar bien eso y cambiar filtro de aire y quedará como Nuevo
 
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Old 12-07-2023, 12:09 AM
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Como te fue con tu auto? Solucionaste el problema?
 
  #17  
Old 03-25-2024, 09:30 AM
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I pulled all 5 spark plugs. Some show signs of oil under the compression washer. The plug from Cylinder 5 was dripping oil when I pulled it. I am soaking the piston rings with Berrymans B12 product. It's possible the oil control rings are clogged and causing oil to be forced into the combustion chamber. I should have the oil change done by

this weekend.
 
  #18  
Old 04-02-2024, 10:51 AM
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Is this normal? I recorded after changing my oil and driving for about 5 miles.

 

Last edited by MisterENB; 04-02-2024 at 11:02 AM.
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