Turbo not boosting anymore :(, I hope i didnt blow anything Options

[eggman40]

I was jumping on the freeway in 2nd gear with stock boost, suddenly the car sputtered and would no longer boost. still not fuel cut because there was no engine light. The car now blows a lot of smoke from the tail pipe. Blown turbo?, blown turbo seal? Rings? dunno someone help me thank you

[DomGT]

A blown turbo would be blown seals. What color is the smoke? Are you sure that you didn't pop an intake pipe?

[x_itchy_b_x]

the wastegate may be held open on the DP. could be the problem.

[eggman40]

smoke is white, checked and looks like intake pipes are good. the car runs normally and idles well, but it makes a sound like an exhaust leak. Maybe thats the wastegate being held open? how would i fix that itchy, any suggestions? Also, if anyone could answer this, how would i know that the turbo is in fact blown? what should i look for? any help appriciated, thanks!

This post has been edited by eggman40: Jul 2, 2006 - 4:48 AM

[DomGT]

White smoke is coolant. Is your turbo water-cooled?

[eggman40]

White smoke is coolant. Is your turbo water-cooled?

it has water lines so i would guess, yes it is water cooled
do you know what could have caused this? i was boosting at stock psi, i was on a long on ramp in second gear, then at around 5000rpm the car made weird sound and sputtered a little, it kept running but no boost, my boost gauge stops in the middle at 0

This post has been edited by eggman40: Jul 2, 2006 - 4:44 AM

[CheesyLobster]

Can you hear it spool still?

[eggman40]

Can you hear it spool still?

nope no spool

[DomGT]

Got your PM... I know it sucks man, but you gotta be safe and stop driving your car, take off the turbo or have a mechanic do the work. If you turbo failed, it can also contaminate your oil and lead to engine problems.

This may give you a chance to go with a smaller or bigger turbo to better suit your car. Were you getting any abnormal gauge readings before the problem?

[Silver94CelicaOw...]

To see if the wastegate is sticking you'll have to remove the DP from the turbo to see what the cause is, i.e. the actuator suddenly letting loose from the 'gate, or perhaps its simply stuck open, or if you use the aftermarket downpipe and you haven't taken a grinder to the flange then that could also be in the way.

If it were me i'd start simple and check and eye everything over closely for leaks and/or visible mechanical issues, but the problem sounds wastegate related to me like John said.

[Bitter]

white smoke can also be from ALOT of raw fuel being dumped into the engine and passed through. its possible that since theres no air being crammed in, when you peg the throttle the fuel is just dumping in like crazy running sooo insanely rich is blowing white out! ive seen cars with stuck injectors blow white smoke, but in your case its probably water from the turbo if it is water. try to capture some white smoke in a bag, let it cool, then see whats at the bottom, coolant smelling water or gasoline smelling water?

[lagos]

white smoke can also be from ALOT of raw fuel being dumped into the engine and passed through. its possible that since theres no air being crammed in, when you peg the throttle the fuel is just dumping in like crazy running sooo insanely rich is blowing white out! ive seen cars with stuck injectors blow white smoke, but in your case its probably water from the turbo if it is water. try to capture some white smoke in a bag, let it cool, then see whats at the bottom, coolant smelling water or gasoline smelling water?

white smoke = coolant or water
black smoke = too much fuel
blue smoke = burning oil

This post has been edited by lagos: Jul 2, 2006 - 1:34 PM

[playr158]

if your wategate was stuck open you would still get some boost....in his case he was white smoke and 0 boost...its a turbo issue

[Bitter]

white smoke can also be from ALOT of raw fuel being dumped into the engine and passed through. its possible that since theres no air being crammed in, when you peg the throttle the fuel is just dumping in like crazy running sooo insanely rich is blowing white out! ive seen cars with stuck injectors blow white smoke, but in your case its probably water from the turbo if it is water. try to capture some white smoke in a bag, let it cool, then see whats at the bottom, coolant smelling water or gasoline smelling water?

white smoke = coolant or water
black smoke = too much fuel
blue smoke = burning oil

cat converter will change unburnt fuel into water that smells like gasoline a cat converter in good working order can injest alot of fuel and blow white smoke for quite some time before it completely fouls.

its hard to universally say what color means what, generally those desciptions are accurate. hell trans fluid burning through the engine is gray, if you didnt know that you'd think you were burning too much fuel and some oil!

[eggman40]

Got your PM... I know it sucks man, but you gotta be safe and stop driving your car, take off the turbo or have a mechanic do the work. If you turbo failed, it can also contaminate your oil and lead to engine problems.

This may give you a chance to go with a smaller or bigger turbo to better suit your car. Were you getting any abnormal gauge readings before the problem?

No, there was not abnormal reading on the boost guage before hand, it was at 8psi when it happend.

As for the DP issue, is there any way to open or close the gate by hand from the outside, like pulling on the actuators?

Im gonna check color of smoke today, this happened last night.

Im not running any cats on the car so i dont think smoke would be changed before leaving the muffler.

If my problem is coolant, what should i be looking for? a cracked hose? or is it a seal thats letting it seep past.

Or if its oil, what should i be looking for?

Also in the worst case senario, how hard is it change for a different turbo, to like a ct20? or an aftermarket one,will the coolant and oil lines still be in the same place? Or should i just have this thing rebuilt with a bigger trim? but before go there i want to see if i could fix the problem i have now though

[Bitter]

pop off the inlet and see if you can spin the compressor wheel with your finger.

[eggman40]

pop off the inlet and see if you can spin the compressor wheel with your finger.

Just checked it and the inlet wheel is Jammed. It will not move at all, not even a jiggle

[Bitter]

well thats why it wont make any boost.


you could have the turbo rebuilt or toss in a new one, and thats about all i know about this. you could rebuild it yourself, but the tolerances (thousandths of an inch) are soo tiny that you'd really only want to do that if you had all the tools and knew what you were doing. its possible that the turbo lost its water or oil feed and seized as a result of heat or no lubrication.

[eggman40]

well thats why it wont make any boost.


you could have the turbo rebuilt or toss in a new one, and thats about all i know about this. you could rebuild it yourself, but the tolerances (thousandths of an inch) are soo tiny that you'd really only want to do that if you had all the tools and knew what you were doing. its possible that the turbo lost its water or oil feed and seized as a result of heat or no lubrication.

Yup i figured sooooo.... does this mean that my turbo is done for and i should start looking into a replacement? or is there one last thing i could do to help the situation?

if the turbo is in fact done for, should i have this one rebuilt and upgraded? or should i just look for a different turbo? thank you guys very much for the help

[Bitter]

well the bearings are seized, the shaft may be shot as well. i doubt there'd be any housing damage. so you still have a good housing and good compressor/turbine. where you go from here depends what you want to do with the car.

[eggman40]

well the bearings are seized, the shaft may be shot as well. i doubt there'd be any housing damage. so you still have a good housing and good compressor/turbine. where you go from here depends what you want to do with the car.

Im not entirely sure, how much am i looking at if i want to boost at 15psi reliably? which turbo should i hunt down, or what upgrade should i make to the turbo i have? Any help would be great. By the way, does anyone know of any places here in So cal that will rebuild a turbo?

[Bitter]

RRE may do that, if they dont then they know places that will.

Road Race Engeneiring. home of mueller, the suspension god!

http://www.roadraceengineering.com/ theyre mostly mitsu now, but they will work with most cars and have worked with lots of different makes in the past.

[DomGT]

I know I should already know this... but someone help me out. What turbo flange is the CT20 or CT26?

Eggman, what flange is your turbo?

[brianforster]

roadraceengineering are great guys, their work is super great quality

[eggman40]

I do believe i found my problem:







seems i broke the propeller in the manifold. i guess that things on the freeway now lol...

so i guess the next step would be a rebuid. or should i try and find my self another turbo. Im not sure which flange its running, DomGT , so if someone know please enlighten us

This post has been edited by eggman40: Jul 2, 2006 - 7:57 PM

[Bitter]

wow, you LOST the turbine?

[eggman40]

wow, you LOST the turbine?

Yup, dunno where its at now. I would expect this if i were boosting at 12 or higher, but this happened at stock boost! this is way too weird, anyone what could cause this?

[Bitter]

wow, it could have sheered off when the turbine shaft suddenly seized i suppose.

[eggman40]

anyone know what could cause sudden lack of oil or coolant? is there a cure for it? thanks again everyone for your help.

[Chanh55]

Too much backpressure?

[eggman40]

Too much backpressure?

No, i dont think backpressure's an issue i dont have any cats or resonators.


Is this turbo worth it? or can i get it at a better price?

or is this better? is this kit a direct bolt on or is there more than meets the eye?


This post has been edited by eggman40: Jul 2, 2006 - 8:25 PM

[Bitter]

if you got a used turbo, it should be rebuilt professionally before using it.

[eggman40]

if you got a used turbo, it should be rebuilt professionally before using it.

thanks for the advice... do you or anyone know if the ct20b is a direct bolt on?? as in all the hoses and stuff will alighn? I would appriciate this thanks

[burneeed]

if you got a used turbo, it should be rebuilt professionally before using it.

In the us ct20b was never produced.... so a rebuild would be pretty hard to get done.

if you got a used turbo, it should be rebuilt professionally before using it.

thanks for the advice... do you or anyone know if the ct20b is a direct bolt on?? as in all the hoses and stuff will alighn? I would appriciate this thanks

Yes the ct20b is a direct bolt on.... imho... I dont think its worth that much money. I would tell you to get yours rebuilt. Sit on some money and get something decent like agt28rs.

[playr158]

since you blew your CT26 just get a CT27 from ATS racing....

[CheesyLobster]

man id say get a gt28r, gt28rs, or gt35r. I really loved the responce of my gt28r when i had it on, spooled for me at like 2000 rpm.

[burneeed]

gt28rs is perfect for our engine

[Bitter]

turbo@turbocity.com or turbocty@pacbell.net.

If you would like to reach us by phone, call us at 714-639-4933, or send us a fax at 714-997-1196. Or you can visit us at 1137 W. Katella Avenue, Orange, CA 92867. Our showroom hours are Monday through Friday 8:00 a.m. to 5:00 p.m. PST.

[eggman40]

well the bearings are seized, the shaft may be shot as well. i doubt there'd be any housing damage. so you still have a good housing and good compressor/turbine. where you go from here depends what you want to do with the car.

So is this thing repairable? Just in case i cant source a turbo

[Bitter]

well the bearings are seized, the shaft may be shot as well. i doubt there'd be any housing damage. so you still have a good housing and good compressor/turbine. where you go from here depends what you want to do with the car.

So is this thing repairable? Just in case i cant source a turbo

i dont think that turbo city place will rebuild it, but call and ask them anyways. pretty much all you have is a good housing. the rest would need to be replaced.