Jump to content
SAU Community

Rb26dett - Engine Problems

R31 Gagz

By R31 Gagz,
in Engines & Forced Induction

 Share

Recommended Posts

R31 Gagz Collaborator

R31 Gagz

Posted
Posted

Hey All,

Was a nice day so had the gtr out for a spin, started the engine around about 11:45am and noticed some white smoke drifting past my window. Didn't do it anymore after I got moving...about an hour later after being at the botanical gardens, started her again, couldn't notice any white smoke. Drove around a couple of corners, got to an 80km zone so accelerated quickly up to speed and then I hear this weird pop while still accelerating and then I start loosing power....basically the car wont respond just continually loose speed until I pull over into a side road where it dies on me....now the car will start and run for about 5 seconds roughly while blowing black smoke rings and then dies...if I start it with some accelerator it runs smooth for about 2 seconds then fluctuates once and dies...nothing I do will keep it running, ended up having to get it put on the tray truck and transported home, pushed into the garage with me sitting with my chin in my hand wandering what happened.

Any ideas anyone, I do have a injector leak issue which causes it to run lean sometimes and makes the engine warning light come on (was not far off getting it fixed, hope its not the cause). Running a power FC with sard 800cc injectors, greddy adj. cam gears, r34 n1 turbos running about 14psi.

Thanks,

Gagz

Link to comment
https://www.sau.com.au/forums/topic/183402-rb26dett-engine-problems/
Share on other sites
Duncan Grand Master

Duncan

Posted
Posted

well hopefully its just an intercooler pipe has come off - check all of the pipes and clamps and make sure they are on OK.

If they all look OK you might want to try a compression test to confirm the motor is still OK......

R31 Gagz Collaborator

R31 Gagz

Posted
  • Author
Posted

Hey,

Don't think its an intercooler pipe but I haven't had a good look yet so will check out. Think the afms are fine too, plugs looked fine.

Will have a closer look tonight and report back my findings, I've got a bad feeling though I've done something worse than an intercooler pipe.

Cheers!

Gagz

wrxhoon Grand Master

wrxhoon

Posted
Posted
Hey,

Don't think its an intercooler pipe but I haven't had a good look yet so will check out. Think the afms are fine too, plugs looked fine.

Will have a closer look tonight and report back my findings, I've got a bad feeling though I've done something worse than an intercooler pipe.

Cheers!

Gagz

It sounds like a pipe , how can you say you don't think its a pipe ? Unless you know something you are not telling us . The way you described it , running very rich so much so you can get any power out of it , its typical AFM issue, you are getting unmetered air from somewhere and my guess is you popped a cooler pipe .

You can't see the lower 2 pipes as they are inside the the b/bar , if you take the blinker grills out you should be able so see if the pipes are ok , if you can't see the top try pulling it your hand . You may have to pull the inner plastic guard to secure it if it came off.

SLIPPERY Experienced

SLIPPERY

Posted
Posted

doesnt anyone else think the engine has popped?

-smoke on start-up

-leaking injector

-engine light 'on' (detonation when using powerFC)

-pop or bang noise

"causes it to run lean sometimes"

All this doesnt look good.

If you cant find any hoses that have popped off then get a compression and leakdown done

wrxhoon Grand Master

wrxhoon

Posted
Posted
doesnt anyone else think the engine has popped?

-smoke on start-up

-leaking injector

-engine light 'on' (detonation when using powerFC)

-pop or bang noise

"causes it to run lean sometimes"

All this doesnt look good.

If you cant find any hoses that have popped off then get a compression and leakdown done

It may have one or more ringlands busted but that is not the reason she won't run or the fact that pumps out heaps of black smoke ( thats fuel) . Don't forget even with a couple busted ringlands you usualy have some compression , say 70psi and with boost the busted cyl still fires and what about the other 4 or 5 healthy cyls .

zertek Proficient

zertek

Posted
Posted
It may have one or more ringlands busted but that is not the reason she won't run or the fact that pumps out heaps of black smoke ( thats fuel) . Don't forget even with a couple busted ringlands you usualy have some compression , say 70psi and with boost the busted cyl still fires and what about the other 4 or 5 healthy cyls .

i agree. :)

blind_elk Grand Master

blind_elk

Posted
Posted
doesnt anyone else think the engine has popped?

-smoke on start-up

simply water vapour from the combustion process - nothing more, nothing less.

I agree that it's probably popped an I/C pipe somewhere. Metered air is not reaching the cylinder, causing extreme richness of mixture.

GTRgeoff Grand Master

GTRgeoff

Posted
Posted

Popped a turbo/IC hose.

I did it at Phillip Island with everything hot and because of the overfuelling it melted my rear bumper and tail light.

It went POP and had no power and had a very rich exhaust, like 2m flames.

SLIPPERY Experienced

SLIPPERY

Posted
Posted

yeah what i was getting at was, he doesnt think its a pipe after a quick check

black smoke would indicate a leak and un-metered air going into the engine-i agree :)

I meant there may well be damage (such as ring lands as said, overlooking the black smoke) from a leaking injector. I wouldnt drive the car at all until it was checked if it were mine because theres a chance youve already done some damage and it may only get worse with continued lead footed-ness :D

R31 Gagz Collaborator

R31 Gagz

Posted
  • Author
Posted

Hey All,

After closer inspection, it WAS an intercooler pipe. The pipe on the inlet/passenger side of the intercooler had come off and had a gap big enough to put a couple of fingers in but was hard to see from casual glance as its half hidden by an air guide for the oil cooler.

My intercooler inlet/oultet and pipes are all lipped and clamped really good, this is why I thought it unlikely to happen but had some repairs done recently on the front bar and I think they had the pipes disconnected at some stage so they probably didnt put it back on properly :)

Thank god it wasnt anything serious :blink:

Thanks everyone for all your help and input.

Cheers!

Gagz

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Rezz
      WGNC34 - floor mats

      By Rezz · Posted

      I can ship Nismo floor mats to you: https://www.oemsoko.co.jp/products/nismo-floor-mats-for-skyline-r33-bcnr33-stagea-wgnc34?_pos=1&_sid=9278c1467&_ss=r  
    • Marek
      WGNC34 - floor mats

      By Marek · Posted

      Here's the link: https://www.amayama.com/en/genuine-catalogs/epc/nissan-japan/stagea/wgnc34/6642/misc/G49?frame_no=WGNC34-137122 What you think about it? The same product i found on nengun: https://www.nengun.com/oem/parts/40567/MiPwn5qAMfCfmpxHNDnwn5q9MDAx8J-QiW9sZC1qcC0xMTAtRzQ5LS0wMDE/Floor+Carpet+%2F+Mat+2/0688339eba149c19 Bot i have spoken to 😅 ensured me, that mats are 100% original, oem product. I have my doubts. I also heard what you mentioned, that nengun often offers items that are actual not available... On the other hand mats i found on japanese yahoo or ebay are in poor condition and still quite expensive so i'd rather wait for some better offers. My location - Poland. We literaly don't have ANY market for used Stagea parts so need to search outside Europe.
    • sinn3r
      R34 Skyline climate control unit transistor

      By sinn3r · Posted

      You can’t see much on the other side as the lcd is there I don’t think it’s the same as the m33 beside it as the markings on top is not the same was hoping someone had a good quality photo or if they just happened to have the unit in hand, quickly take the cover off and take a photo to clearly show the marking on top to identify the diode   the unit is currently with an electronics repair shop so I can’t take another photo at the moment hopefully they are smart enough to know if it’s a zener diode or not
    • soviet_merlin
      WGNC34 - floor mats

      By soviet_merlin · Posted

      I'd be very surprised if you can buy new OEM mats. But if you can, I want some too!  Do you have links to the variations you found? Also, where are you located? I found that Nengun is happy to list items to purchase but when you do buy them you'll get an email that it's actually discontinued. As far as I know the variations in floor mats are different colour schemes as well as automatic and manual having a slightly different shape. The automatic ones fit into a manual car without issues, but I think you'd have trouble fitting the other way around. I have photos that show the shape difference if you care. FWIW I bought sets of used floor mats in decent condition at yahoo auctions.
    • Marek
      WGNC34 - floor mats

      By Marek · Posted

      Hi 🙋‍♂️. Just bought my Unicorn but the interior need some minor work so it would match my expectations ;). I noticed it is hard to get used oem floor mats in good condition so i started to dig if there's any chance to buy set of new ones. I found two websites - nengun and amayama and it looks like one can still buy factory new floor mats in Japan, but thers a small issue. Some mats (i assume genuine, oem ones) are marked as G4900 and these are "discontinued". The ones you can buy are marked as G4911 but i have no idea if these are also oem, made by other producer or some lower quality replacements that looks entirely different. Can anyone help? 😃  P.s. there is also some strange indication - 0V005, 0V015 and 0V505. Any idea what does it mean? Would appreciate any help with this 🙏
×
×
  • Create New...