rb25 det.. Turbo not spooling

Discuss the RB20, RB25 and RB26 series engines.
flip_pete
Posts: 18
Joined: Mon May 18, 2009 4:33 pm
Car: 240sx

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Hi guys i just got a 240sx with an rb25det.. i was driving down the freeway when i slammed on the accelerator i just heard a small bang sound and after that i lost power and i dont hear my bov working? can u tell me whats wrong with the engine ryt now? and its blowing white smoke my friend the guy that i got it from told me that its not the head gasket coz its not a thick white smoke and told me that there was a leak either on the cupplings? or the vacuums? can u please help me out? im bummed out ryt now


Cjmartz2k
Posts: 1845
Joined: Sat May 19, 2007 1:39 pm
Car: Hunting for a '89 GTR now
Location: Okinawa, Japan

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White smoke means headgasket, so tell your friend he's dumb. From the sound though, I'd guess you pooped you exhaust wheel into your cat. New turbo time I'd guess.

flip_pete
Posts: 18
Joined: Mon May 18, 2009 4:33 pm
Car: 240sx

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but if it was the head gasket when you check the oil it should be milky ryt? and from the space that the car was parked checked the ground theres no leaks.. one of my friends told me that the car is running too rich in gas thats y its producing white smoke.. is this something serious tho? pls help me out

dtowngoalie
Posts: 98
Joined: Mon Dec 01, 2008 6:15 pm

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flip_pete wrote:but if it was the head gasket when you check the oil it should be milky ryt? and from the space that the car was parked checked the ground theres no leaks.. one of my friends told me that the car is running too rich in gas thats y its producing white smoke.. is this something serious tho? pls help me out
If teh head gasket the oil COULD mix with coolant. I had a rb20 with the HG blown between the coolant passage and the cylinder which causes white smoke, but no oil/coolant mixture. If it was running too rich, it would be black smoke coming out and you would prolly expereince a missfire. I'd say check ur exhaust wheel on your turbo, but the white smoke doesn't go with a blown up exhaust wheel. Try taking out your spark plugs in unclip your injectors and crank the b**** over and see if u see water going into the cylinder.

flip_pete
Posts: 18
Joined: Mon May 18, 2009 4:33 pm
Car: 240sx

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so i guess staritng the car is not a good idea huh? what else should i be experiencing? like overnyt i let the car rest and in the morning started the car just one click and it idled normal the coolant is still on the same level if u dont rev the car it dosnt give out white smoke but when u rev the car the white smoke comes out... is this sumthing serious?

dtowngoalie
Posts: 98
Joined: Mon Dec 01, 2008 6:15 pm

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Check if your headgasket is blown, just compression test it. or do a leakdown and see if you have air coming out of your intake/exhaust/dipstick/valve covers/or rad cap. It's a good sign that you're not using up coolant.

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maryjane
Posts: 740
Joined: Tue May 12, 2009 7:50 am

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sounds like your 25 turbo exhaust wheel broke off, id do a leak down test to see how your h/g is holding up tho

rb25det250sx
Posts: 443
Joined: Sat Feb 07, 2009 9:20 pm
Car: '96 Nissan 240SX RB25DET powered!!!
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yup...sounds like turbo time!!

flip_pete
Posts: 18
Joined: Mon May 18, 2009 4:33 pm
Car: 240sx

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so if its the turbo my engine should be fine ryt? i mean the air fuel ratio is off thats y its producing white smoke.. i guess a ball bearing turbo will be the best bet? oh yeah the car doesnt have a cat

rb25det250sx
Posts: 443
Joined: Sat Feb 07, 2009 9:20 pm
Car: '96 Nissan 240SX RB25DET powered!!!
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if you blow your turbo it will make a white smoke, because of idk why. i just kno it does.. motor should be fine, but just incase i would take off the pan, and check for shreads of metals, etc...

flip_pete
Posts: 18
Joined: Mon May 18, 2009 4:33 pm
Car: 240sx

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ohh ok thanks so much... ryt now im kinda relieved knowing that the part thats bad was the turbo... thats what i was thinking to coz i checked out the leaks already and tightened everything i can but stil doesnt work... one moe question tho so if my engine is ok.. i guess starting the car every ones in a wyl is still ok ryt? i mean so that my battery wont get drained and so that i can warm up the engine... is there anything that i should do? thanks

rb25det250sx
Posts: 443
Joined: Sat Feb 07, 2009 9:20 pm
Car: '96 Nissan 240SX RB25DET powered!!!
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with a bad turbo like that, i would refrain from starting it if possible, like i said, if you dont want your motor to go bad i wouldnt because the turbo could throw s*** up threw the exhaust, or in the oil.

Cjmartz2k
Posts: 1845
Joined: Sat May 19, 2007 1:39 pm
Car: Hunting for a '89 GTR now
Location: Okinawa, Japan

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Sounds like you've got a LOT of research to do.

-I wasn't saying I thought it was your headgasket. I was saying white smoke is a sign of headgasket/coolant getting burnt, and if your friend said white smoke means it isn't the heasgasket, don't ever listen to him about cars again.-You might have milky oil or nasty coolant from a blown headgasket, but not always. Compression check is the way to see. -How's your oil level?-You could be getting coolant from a blown turbo, along with burnt oil. Depending on how the exhaust wheel s*** itself, it could have taken out the seals with it-Whether or not a turbo is ball bearing has very little to do with it's performance, and a lot more to do with it being expensive. There are non-ball bearing turbo's out there that out perform BB turbos due to better wheel design, twin scroll, variable ex housing a/r's, etc. Would I rather have my Holset turbo have a BB center cartraidge? Yep (if I didn't care about ever having to rebuild it).

Jack the car up, disconnect the front of the cat, and look for random parts that don't look like they are supposed to be there, and no, I wouldn't drive it until then.

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mean240
Posts: 73
Joined: Tue Dec 28, 2004 9:27 am
Car: 240sx,crx

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flip_pete wrote:ohh ok thanks so much... ryt now im kinda relieved knowing that the part thats bad was the turbo... thats what i was thinking to coz i checked out the leaks already and tightened everything i can but stil doesnt work... one moe question tho so if my engine is ok.. i guess starting the car every ones in a wyl is still ok ryt? i mean so that my battery wont get drained and so that i can warm up the engine... is there anything that i should do? thanks
I got a Stock turbo with 90xxx KM not miles still on my car works really good.

you can have it for 300 and thats including a Elbow + Down pipe with divorced wastegate email me if you're interested!

outlaw020991
Posts: 10
Joined: Thu Apr 23, 2009 7:18 pm
Car: 1995 s14 RB25DET

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here's a question no one has seemed to ask.....

how much boost are you running?

sine the rb25det comes with a turbo with a ceramic wheel, chances are anything past 12 will be sure to go kaboom!!!!

p.s. people, please spell out your words!

flip_pete
Posts: 18
Joined: Mon May 18, 2009 4:33 pm
Car: 240sx

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guys i just checked my turbo and i didnt find the turbine on the air intake side but instead i found pieces/chunks that i believe is the turbine or the fan inside the turbo... i disconnected my intercooler and found more pieces inside. Is it possible that some small pieces would have went inside the engine? i know that the only way to be sure is to take apart my engine and check it... and to let u guys now i lost the turbo like last two weeks which was on the 17.. ive been starting it and drove it around my neighborhood not knowing that the turbine is gone already and it still idles good and runs.. and i checked my turbo on Saturday after 1 week and as soon as i found out that the turbine is gone i haven't started the car.. should i replace the turbo and before starting it up should i change my oil too? what do i have to do? thanks

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TheRealNap0le0n
Posts: 688
Joined: Wed May 06, 2009 5:21 pm
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Location: Saint Cloud, FL
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you should sell you car to someone who knows what they are doing and buy a kia

rb25det250sx
Posts: 443
Joined: Sat Feb 07, 2009 9:20 pm
Car: '96 Nissan 240SX RB25DET powered!!!
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no, check intercooler piping and the inside of the intercooler shake it around a little and see if theres anything in it. the check exhaust. take off you exhaust mani and check that. motor should be fine, but while the turbos off i reccomend take off oil, and coolant lines check those, and replace with SS braided lines.

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Fibre guy
Posts: 712
Joined: Sun Mar 08, 2009 12:57 pm
Car: 91' s13 RB25DET, 95' s14 bone stock, 87' Wrangler 4.6L stroker

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You swapped a RB but don't know the symptoms of engine/turbo probs?

rb25det250sx
Posts: 443
Joined: Sat Feb 07, 2009 9:20 pm
Car: '96 Nissan 240SX RB25DET powered!!!
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he didnt swap it he bought it!

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Romeo_rus
Posts: 644
Joined: Sun Nov 23, 2008 7:18 pm
Car: zenki RB25DET - SOLD, zenki SE ka24de - wrecked, zenki - sold, GOLD ZENKI - WILL LIVE FOREVA
Location: Chapel Hill, NC

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silviasgp06
Posts: 418
Joined: Mon Apr 02, 2007 1:12 pm
Car: 95 Nissan Zenki RB25 Powered

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your car hates you for not being able to type in real words....

I'm interested in how high you had you boost at, from what we can tell you do not seem to know anything at all about motors let alone RBs. Did you turn your boost up somewhere way up past 14psi cause your friend told you to?

~i thk de onlee reesin a MoD has not locked dis thred yet is bCUZ sum pee pole doughnt mind halping u~

I dont mean to flame but.... your typing really bothered me

good luck with everything though, I hope your motor is still ok and you will take the time to research and learn about what you have


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