s13 blacktop sr wont boost? please help - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Destructodc74 · 11-09-2009, 12:00 PM

okay so i have an s13 blacktop sr, i was running 11lbs on the stock t25 for at least a month until one day i was ripping it on the highway threw it into fifth and lost all power if i stepped on it, the car sputters and you can hear the turbo trying to spool but nothing, my gauge reads probably ~2lbs max. so i figured i blew my turbo beating on it, so i ordered a rebuild kit and then pulled the turbo, it didnt feel like it had much shaft play to begin with but i brought it to a shop and they tested it and it was still perfect. so no idea what it could be, i changed the plugs because my car has fouled them before. any input is greatly appreciated. thanks.

s14unimog · 11-09-2009, 12:08 PM

^ for one, never start with " I think I blew the turbo" It would never stop blowing air if its blown, unless it has locked up. Second, I would have looked for a popped off inter-cooler coupler. You may have ripped one too. check the charge system for leaks.

clark · 11-09-2009, 12:13 PM

alright, check and replace cheap stuff....check vac lines, and like s14unimog said, really sounds like you blew a pipe or something. I've done that...it's like your engine got punched in the stomach.

problem sorta seems like fueling, but how about a better interpretation of the current problem, we know what happened, when it happened, but what's it like now...does it idle normal? does it sputter through the RPM band?

video?

Destructodc74 · 11-09-2009, 12:22 PM

it starts up and idles fine, revs perfect all the way to redline sitting in neutral but as soon as you put a load on it it sputters hard exactly when boost should be kicking in, i havent checked for leaks yet although i know its the obvious thing do to, and that could be it, when i step on it i usually get a small cloud of black smoke.

Destructodc74 · 11-09-2009, 12:30 PM

ill try to get a video up but whats an easy way to test for boost leaks?

clark · 11-09-2009, 12:52 PM

Quote:

Originally Posted by Destructodc74

ill try to get a video up but whats an easy way to test for boost leaks?

there are only so many places the boost leak could be. hotpipe from turbo to ic, cold pipe from ic to tb.

check clamps and your boost couplers.

Destructodc74 · 11-09-2009, 01:05 PM

thanks. tommorrow i think im going to make a diy boost leak tester and get a good idea. i really hope thats the problem

conrad_s13.5 · 11-10-2009, 09:33 AM

does it sound like you have an exhaust leak!? check the manifold too man,... could have came loose or got a leak there.

Destructodc74 · 11-10-2009, 02:04 PM

no exhaust leak im positive of that, i just pulled apart the whole setup yesterday and put everything back together with copper gasket sealant. im gonna attempt to check for boost leaks soon.

S13 curtis · 11-11-2009, 02:18 AM

what is the vacume at idle?

Destructodc74 · 11-11-2009, 06:58 AM

wow, it was a boost leak, somehow one of the clamps slipped under the coupler at the intake manifold.... i feel like a dumbass for tearing my setup apart to find it when it was so simple. thanks everyone.

S13 curtis · 11-11-2009, 07:36 AM

sweet!!!!!

11-09-2009, 12:00 PM	#1
Destructodc74 Zilvia Junkie Join Date: Aug 2009 Location: ny Posts: 442 Trader Rating: (7) Feedback Score: 7 reviews	s13 blacktop sr wont boost? please help okay so i have an s13 blacktop sr, i was running 11lbs on the stock t25 for at least a month until one day i was ripping it on the highway threw it into fifth and lost all power if i stepped on it, the car sputters and you can hear the turbo trying to spool but nothing, my gauge reads probably ~2lbs max. so i figured i blew my turbo beating on it, so i ordered a rebuild kit and then pulled the turbo, it didnt feel like it had much shaft play to begin with but i brought it to a shop and they tested it and it was still perfect. so no idea what it could be, i changed the plugs because my car has fouled them before. any input is greatly appreciated. thanks.

11-09-2009, 12:08 PM	#2
s14unimog Nissanaholic! Join Date: Dec 2003 Location: In a place, near a river, over a lake Age: 38 Posts: 2,415 Trader Rating: (22) Rides Gallery: s14unimog Feedback Score: 22 reviews	^ for one, never start with " I think I blew the turbo" It would never stop blowing air if its blown, unless it has locked up. Second, I would have looked for a popped off inter-cooler coupler. You may have ripped one too. check the charge system for leaks. __________________ Fuking ginger bread man stole my wallet... SHIFT*lock_slide to side d3m3rs0n: if i have a baby im naming it Brandons Fault Emerson

11-10-2009, 09:33 AM	#8
conrad_s13.5 Zilvia FREAK! Join Date: Jan 2009 Location: STL Age: 37 Posts: 1,533 Trader Rating: (6) Feedback Score: 6 reviews	does it sound like you have an exhaust leak!? check the manifold too man,... could have came loose or got a leak there. __________________ cONtRol FReAkS

11-09-2009, 12:13 PM	#3
clark Zilvia FREAK! Join Date: Mar 2008 Location: new york Posts: 1,035 Trader Rating: (1) Feedback Score: 1 reviews	alright, check and replace cheap stuff....check vac lines, and like s14unimog said, really sounds like you blew a pipe or something. I've done that...it's like your engine got punched in the stomach. problem sorta seems like fueling, but how about a better interpretation of the current problem, we know what happened, when it happened, but what's it like now...does it idle normal? does it sputter through the RPM band? video?

11-09-2009, 12:22 PM	#4
Destructodc74 Zilvia Junkie Join Date: Aug 2009 Location: ny Posts: 442 Trader Rating: (7) Feedback Score: 7 reviews	it starts up and idles fine, revs perfect all the way to redline sitting in neutral but as soon as you put a load on it it sputters hard exactly when boost should be kicking in, i havent checked for leaks yet although i know its the obvious thing do to, and that could be it, when i step on it i usually get a small cloud of black smoke.

11-09-2009, 12:30 PM	#5
Destructodc74 Zilvia Junkie Join Date: Aug 2009 Location: ny Posts: 442 Trader Rating: (7) Feedback Score: 7 reviews	ill try to get a video up but whats an easy way to test for boost leaks?

11-09-2009, 01:05 PM	#7
Destructodc74 Zilvia Junkie Join Date: Aug 2009 Location: ny Posts: 442 Trader Rating: (7) Feedback Score: 7 reviews	thanks. tommorrow i think im going to make a diy boost leak tester and get a good idea. i really hope thats the problem

11-10-2009, 02:04 PM	#9
Destructodc74 Zilvia Junkie Join Date: Aug 2009 Location: ny Posts: 442 Trader Rating: (7) Feedback Score: 7 reviews	no exhaust leak im positive of that, i just pulled apart the whole setup yesterday and put everything back together with copper gasket sealant. im gonna attempt to check for boost leaks soon.

11-11-2009, 02:18 AM	#10
S13 curtis Zilvia Addict Join Date: Jun 2008 Location: Orlando,FL Age: 34 Posts: 651 Trader Rating: (13) Feedback Score: 13 reviews	what is the vacume at idle?

11-11-2009, 06:58 AM	#11
Destructodc74 Zilvia Junkie Join Date: Aug 2009 Location: ny Posts: 442 Trader Rating: (7) Feedback Score: 7 reviews	wow, it was a boost leak, somehow one of the clamps slipped under the coupler at the intake manifold.... i feel like a dumbass for tearing my setup apart to find it when it was so simple. thanks everyone.

11-11-2009, 07:36 AM	#12
S13 curtis Zilvia Addict Join Date: Jun 2008 Location: Orlando,FL Age: 34 Posts: 651 Trader Rating: (13) Feedback Score: 13 reviews	sweet!!!!!