greddy turbo 18G in GSR swapped civic

yesterday I got an oil change
today i had boost
parked car
tightened what i thought were a few loose nuts on exhaust mani
now no boost

at idle Boost Gauge reads 20 VAC
dont hear as loud of a spool sound as I used to
WOT I get 0 psi
let off WOT hear BOV making quiet Pssst

what the hell did I do?

 

check the wastegate vac. line....maybe?

 

I just triple checked the lines and hoses.. everything looks ok...i didnt touch anything with that, i just tightened a few nuts/bolts on the manifold... no big deal right? .....

 

check to make sure the wastegate isn't stuck open.

 

That happened to me last week... The wastegate actuator came loose from the flapper on the exhaust manifold... so that was the first thing I checked.

That thread was here : https://honda-tech.com/zerothread?id=838034

But thats all hooked up good now, and both the flapper and actuator are moving freely when I pull on the actuator...

other ideas?

 

how much are you boosting? Any chance that one of your charge piping may have disconnected?

 

stock boost which is supposed to be 5.5 psi ..but there are times it runs 7 psi...thats internal wastegate for you...

but yeah.. ill double check the pipes.. but im sure they are ok..

 

charge pipes really do look ok....

can someone plz just let me know, that theres defintly no way for me to have lost boost by tightening nuts/bolts on manifold, because thats all i did...

also.. why would the spooling sound so different now.. its hardly noticeable/much quieter.... almost sounds naturally aspired yet im still getting vac to 0 psi...

 

could the wastegate vac control pot (not sure of its tech name) be bad and not able to hold closed anymore?

just a thought...

 

uh oh.

another case of the boost fairy.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by soulrider4ever &raquo;</TD></TR><TR><TD CLASS="quote">can someone plz just let me know, that theres defintly no way for me to have lost boost by tightening nuts/bolts on manifold, because thats all i did...
</TD></TR></TABLE>

you act like someone is hiding the answer from you. you can look at your car, we cant. so the only suggestions we can give you are general, and they have been given.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by envision2teg &raquo;</TD></TR><TR><TD CLASS="quote">you act like someone is hiding the answer from you. you can look at your car, we cant. so the only suggestions we can give you are general, and they have been given.</TD></TR></TABLE>

And, I of course, appreciate any/all suggestions...

I'm curious to know if its possible to tighten bolts and have that stop boost...

this car is frustrating the hell out of me... thats all..

 

I hope U checked your turbo?

Spin the shaft and see if it's good. You never know.

This sounds to me like a stuck turbo.

Think, even if the wastgate actuator is open you would still get boost, very low boost(2-3psi) but still boost. Now if the turbo is stuck somehow there at WOT then the engine normally at 0psi.

Just check the turbo to make sure it spins freely and halla back. You did say it sounds different.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRX T-Si &raquo;</TD></TR><TR><TD CLASS="quote">I hope U checked your turbo?

Spin the shaft and see if it's good. You never know.

This sounds to me like a stuck turbo.

Think, even if the wastgate actuator is open you would still get boost, very low boost(2-3psi) but still boost. Now if the turbo is stuck somehow there at WOT then the engine normally at 0psi.

Just check the turbo to make sure it spins freely and halla back. You did say it sounds different.</TD></TR></TABLE>

what he siad.. loosen the bolts u tighten

 

double check all of the i/c pipng connections. some may appear to be attatched , but arent
-jonny

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by G"UNIT &raquo;</TD></TR><TR><TD CLASS="quote">

what he said.. loosen the bolts u tighten</TD></TR></TABLE>

it sounds to me like he tightened the bolts on the head flange. if this is correct there is no reason he would lose boost.

i think you are freaking out about the bolts being tightened and now you have no boost. IMO it is just a coincidence.

you put the kit on right? so you know at least a little about it. check everything you can think of, then check it again....

if you cant figure it out then take it to a shop, they wont charge you just to take a look at it.

 

hmm...do you actually hear the turbine spoolin or spinning?? If not than you could be looking at a seized turbine. If it is spoolin and you don't get boost but can hear the turbine spoolin than its a loose or disconnected pipe somewhere or a stuck wastegate. But you say that you checked the actuator and its all good right? I'd check for a boost leak and then i'd check the turbo itself. Those would be good places to start. Unfortunately it could be alot of problems, so good luck and let us know what you find out.

 

if you have ever disconnected your charge piping on your setup and tried to drive it, it will not build boost, it will not go into boost on the gauge and you will not receive a massive "spooling" sound. the sound will also almost be "NA". all of these things which you have described! so you know what my best guess is. check all your charge piping. dont just look at it and poke it. get your screwdriver out and start tightening ****. it's leaking somewhere. otherwise the wastegate is open letting all the build exhaust pressure out and not spooling your turbo.

 

lohatch your are wrong and right at the same time.

That is a good point that your brought up. If the charge pipe is disconnected somehow somewhere then it would not give boost pressure. This is where your correct

and this is where our wrong well, not entirely but just wrong choice of words.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lohatch &raquo;</TD></TR><TR><TD CLASS="quote"> get your screwdriver out and start tightening ****. it's leaking somewhere. </TD></TR></TABLE>

Check your connections to make sure it's connected. Clean off any oil residue if any to make sure the pipe(s) does not slip off(not saying that it did or did not).

Just check it.

 

just checked the turbo.. everything is spinning just fine...

i am going to quadruple check the IC piping... wish me luck..

thanks for all / any posts.. ill keep you posted

 

no worries man, i just threw that in there in hopes that it would give him some motivation to check all the connections, since i just got the feeling he was looking at em and going "hmm they look connected" i boosted hard enough one time that i blew the charge piping out of the coupler and i was using nice turbonetics couplers and i assumed i had them adequately tight. the thing that puzzles me is that this just happened when he went out and started his car. not while he was driving or boosting.

 

Turbonectic couplers suck in a big way.

The price is the main reason. Got a 90 degree bend from them(very bad quality, bend wise and material) **** cost me $68 bux and it broke on me less then a year.

Their silicon connectors are very thin, when you use the T-bolt clamps on it you have to tighten it to the max and it still feels loose.

I use the couplers from ExtremeMotorsports.com and they are great. Very thick yet price isn't.

Althought I don't really need T-bolt clamps I got them just for the hell of it.

 

Ok.. im officially not spooling at all.. whats that mean

Edit : No spooling noise what so ever... I checked the turbo, it spins... the gauge still reads the same, Vac 20 at idle, then 0 psi..., but there is no noise what so ever indicating that there is even a turbo under the hood except the BOV making some noise after WOT....

thoughts/opinions?

still trying to figure this out!

$10 to the man who knows what it is!!!

 

sorta happened to me... all of a sudden no boost and no bov sounds... for me.. the bov screw came off and it wasnt on all the way.. creating a giant hole. screwed back on and a ok.

 

gotta be a leak somewhere

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dunkd &raquo;</TD></TR><TR><TD CLASS="quote">gotta be a leak somewhere</TD></TR></TABLE>

Thanks!

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jazz215 &raquo;</TD></TR><TR><TD CLASS="quote">sorta happened to me... all of a sudden no boost and no bov sounds... for me.. the bov screw came off and it wasnt on all the way.. creating a giant hole. screwed back on and a ok.</TD></TR></TABLE>

Ok, but I am getting BOV sounds, and I checked the screw its definitly on there and tight.

Any ideas as of why I wouldn't be hearing any spooling noise? Wouldn't that mean I have a leak in exhaust manifold?