(r32gtr) No Boost, And Vacume Cleaner Noise.

[GTR_NUTZ]

hey

I just finished work tonight, and on the way home, for about the first 10mins I dont boot it, and later on when I started to, I wasnt getting any boost... Insted I was getting a strange howling noise, kind of like a vacume cleaner when the turbos are suposed to make boost.... well it sounded like on to me...

My car sounded fine and drove fine apart from having no boost. And because this is my pirde and joy, I didnt want to push it. I was reving out to something like 3500rpm and changing gears.

There was no smoke, but slightly unusual back firing when I put it up a gear to slow down. I was keeping an eye on my oil presure and my temps. they where all fine.

I done a small search, but because of my lack of knowlege on searching (and spelling) I couldnt find much. however... The searches that i did, some people had a similar problems to me. Others sugested a split hose somewhere. Another sugested a blocked cat... And me not being a total rev head, I have no idear... thats why I ask.

My GT-R32 is stock... I have an exhaust, pods, boost controler-I think this might have something to do with it cause its prity much broken, I cant turn it down or up. I am also running 1 bar... With worn/broken oil seals on one or both the turbos.

I realy need to try and narow it down because its an absolute bummer. If any one has any idears on what could be causing the problem PLEASE post away.

thanks

JUSTIN.

[paulr33]

sounds like exhaust wheel in cat disease, the exhaust wheels have died therefore turbos dont spin quickly therefore no boost. how come you were running 1 bar? just asking for trouble on 15year old stocker turbos

[GTR_NUTZ]

Hey.

My last tune was about 5 months ago, and i asked if it ws possible to tune it to about 90% of what it could handle, just to be on the safe side...

I wasnt expecting this to happen so soon. I have been saving for new turbos, now I have the mone for them, Ill be getting them (GT2860R) but I also wanted to get a PFC before I get the turbos put in... saves the headache, re-tuning, and more money spending...

If this is the case, then Ill leave the car in the back yard for another 2-4 weeks untill have the money...

thanks mate.

JUSTIN

[saliya]

Hi,

If the car is truly 'running normal' apart from no boost, it's not likely to be a boost leak (i.e. you've

most likely broken something). But my R32 only starts making boost at around 3500 RPM; so

look for a leak in the pressurised part of the intake system (follow pipes off turbos, through

intercooler, into plenum checking for leaks all along). The joins are the places to check first.

Regards,

Saliya

[GTR_NUTZ]

Hey.

If there was a boost leak, then wouldnt the car go into LIMP mode? or does that only happen if somthing major is wrong? Ill still check the lines and pluming... well the stuff i can get to.

any more jugestions

Oh yeah. I forgot to add, i noticed that the revs had dropped about 200 a couple of times. if i have a vacume leak, then the revs would go higher right? what happens if you have a boost leak?

thanks

JUSTIN

[Abo Bob]

I think there might be an air leak somewhere. There are so many hoses in there you just have to go throuhg them all.

Try leaving your engine running and use your ears to find the hissing sound.

[psybic]

The fact there is a howling noise suggests the turbos are doing SOMETHING, so maybe a leak. When my cat got hungry and started eating exhaust wheels, there was no difference between when the turbos should and should not have been making boost, cause it was just plain NA the whole time. Really gotta check the cooler pipes and stuff for a leak somewhere. Then again, besides the bit where you said makes a noise when should be on boost... everything else says the cat probably does have something in its belly....

Good luck with the new turbos...

[GTR_NUTZ]

Hi.

I havent done much with my car in the last week or so. Ive been in SA, I bought some Garrett GT2860R while I was on holidays too.

The other day I took my air pods off and in the duckting on the last one there was a fair amount of oil, from my broken oil seals on the turbo. And I was wondering that mabe, just mabe, my air mass meeter might be cloged with oil and the boost (under load) is being let out the BOVs because it cant sence whats happening....

If this may sound right, let me know... If this also sounds like a heep of sh!t let me know too.

Thanks

JUSTIN

[Nozila]

from what you said, oil seals going/oil in intake pipes means that your problem can definately be narrowed down to your turbos. imho from your description, their dead. like others have stated, check the cat for any bits and pieces.

[GTR_NUTZ]

just now when I started my car up to hear if there is any noise from a leak any where (and so the battery doesnt die), I put my palms over where the pods go to see if mabe one turbo was sucking more than the other (like what "psybic" said mabe the cat ate the exhaust wheal) and they both gave a prity good sucking feeling... But I will check the cat when I get off these stupid night shifts.

Im starting to think about leaving the car in the back yard, caving and then buying a Power FC and cam gears, putting the car on the back of a truck and putting it in at Racepace or ICE.

Why do these jap cars have to be so cool and be head ache at the same time...

[Rolls]

If you didn't run it at 1 bar I doubt it would have died.

[Damo]

Do you get any vacume indication on your boost gauge???

[GTR_NUTZ]

Do you get any vacume indication on your boost gauge???

<{POST_SNAPBACK}>

Yeah I was. But when I push it to try and get boost, the needle moves up and then sits a fraction above 0 and then that noise starts up.

[The Mafia]

there are only 2 most likely answers.

1. Exhaust wheels in the cat, its new turbo time.

2. You've blown off an intercooler pipe somewhere

[GTR_NUTZ]

1. Exhaust wheels in the cat, its new turbo time.

2. You've blown off an intercooler pipe somewhere

<{POST_SNAPBACK}>

I had an intercooler pipe blow off before, then the car went into limp mode, that scared the hell out of me cause I only had the car for about 3 months - I fixed that a few days later when I had time. So I am starting to think that cant be it.

As for the exhaust wheel in the cat... I am going to have a look on thursday and see if there is anything in there.

This may sound a little stupid... But when I take out the cat, is it going to be realy obvious that was the problem? And Ill have huge pieces of ceramic exhaust wheel falling out? Or would it have all turn to dust with small chunks and have pieces of the cat stuffing missing?

...Or all of the above?

Also, while the cat is out, I have read about people gutting their cat with a pipe slamed straight through it. The pipe was then removed of course, but insted of having a massive # like pattern, there was a huge hole in it... Is this safe to do?

(Apparently there is alot less restriction from the exhaust, and sounds alot better too)

Thanks

JUSTIN

[rinmak]

Obviously there would be less restriction but its also highly illegal.

If your going to do it I would suggest welding a pipe through the cat body (so as to make it straight through) and not get bigger, then smaller again. Keep the cat body there so that it at least looks like you have a cat

[GTR_NUTZ]

Well I took out the cat. Nothing... The exhaust and cat was as black as the back of my arse, but there wasnt any sign of exhaust wheel inside there. So now I am starting to think that I do have a split pipe or hose somehere. This is going to sh!t me to tears trying it.

Just a quick question, what happens if you turbo is ceased?

thanks

JUSTIN.