Jump to content
SAU Community

Recommended Posts

Hi guys

this thread is for those out there with mechanical knowledge and auto elects.

Right im having troubles with my rb20 after 6 months of the road i am finally ready to kick the bitch over last night,

after checking everything in the engine bay was connected and tight we had no luck she just would not fire after bout 5 attemps the motor sought of just siezed a friend sugested hydrollic lock so we waited but still locked.

took the coil packs off plugs came out and were wet as with fuel, hit the key to release the lock and a bout a whole litre of fuel came rushing out of cylinder six and drenched my mate with fuel

he said he never seen so much fuel come out a cylinder and sugested that the injector must be stuck wide open,

Now i took the inlet manifold of so that i could get to the injectors as i did i noticed that in the runners after i bolted off the top of the inlet where some filled with fuel some with alot and some with a little

i have never come across this before why would there be fuel in the inlet runners?would it be the injectors are ****ed or what also there is no spark from the coils could these problems be related or not?

I have never had this car running yet bought it smashed and is now some good mods like t4 turbo custom manifold front mount ect....

if anyone knows there shit please help out im a long way from profesional help and its dificult to get the car somewhere where a pro can look at it im pretty handy with a spanner and my mates advice falls short on this shit even though he has been a mechanic for 10 yrs please any help or feed back would be greatly appreciated

thanks all :spank:

matt

Link to comment
https://www.sau.com.au/forums/topic/55870-rb20-flooded-with-fuel-help/
Share on other sites

Some times you have to bite the bullet and send it to a workshop that is familiar with Imports & performance. Not a normal mechanics shop that happens to have a dyno.

you see thats the thing i live like 2 hrs past newcastle there are only dick head V8 piss and dribble faggots up here the closest work shop would be newcastle

so 1... the car does not drive

2... even if it did not registed

3...cant afford 2 tow it to some 1 just to say ..."oh ur injetors are ***ed"

im only goin that path if i really really have to i just want to know does anyone know why this would happen

ie... are the 2 problems related

another theory is that for some reason the injectors rnt pulsing but r just constantly squirting

anyway my injectors r being tested tomorrow will find out if they r the cause of the flood of fuel in cylinder six and maybe why there would be fuel in the inlet runners????

so fingers crossed it will be sorted tommorrow

but i would still like 2 know other peoples opinion the more theories i have the better and faster i can eliminate the problem

:spank:

matt

It is a difficult one as you have never had the car running.

 

Is it running an aftermarket ECU? Different Injectors?

no they r only running a factory ECU which we had in a friends R32 worked fine and it still runs standard injectors

i know it sounds stupid but im changing to a wolf 3d ver4 wire in but i just want to get it running before i spend the money make sure everything is ok so i dont encounter these problems later and have to do the process of elimination again

so i know the computer is fine, injectors will be checked tomorrow so i just want to know what else i should check the last option is getting an autosparky to come have a look but only as a last resort and have no other option or have no where else to go.

its not that i cant afford it its just that i have hand built this car from scrath after the accident the only thing that hasnt been changed and im serious it is the only thing is the wiring and as you can tell in no sparky so thats a last option

:goddam:

matt

Sounds like maybe it's not getting spark.I'm guessing from your name the RB20 is in a silvia? and you have just done the wiring.

I'd check to see if it's getting spark coz I had the same prob putting the RB20 in my R31.It was one wire that we connected wrong and the motor cranked but did'nt fire.So yer check all power and earthe to the ECU

thanks meggala and r31

meggalla the fuel pump is workin fine straight from sss automotive out of R32 gtr have checked the regulator how do i do that? and yeah i was quitely thinking the coil packs my self does anyone know the pin out diagram for the coil packs, and also some of the coil packs have R32 GTR written on them like what the wreckers writem on things in pink texta what is the dirrerence in the coil packs or the pin outs?

and R31, yeah ive been told that it could be a wire not conected or something like that not actually having done the wiring conversion myself i dont know where 2 start all that i did after the smash was fixed was connect all the wiring ,every earth i found i earthed every connector i found i tried to find its mate but as you would have found out there r some connectors that rnt used so i really dont know where to start with that either

but thanks guys i feel that the answer lies in this forum and i apprecite the time for the replys its all helping believe it or not

:spank:

matt

If you remove the fuel rail from the manifold, you can then inspect the injectors to see what they do when:

1 - Prime (turning IGN to ON).

2 - Crank - turn IGN to START

In case of 1, there should be no fuel coming out of the injectors. In case of 2, you should see each injector spray fuel as engine turns over.

You can simulate 2 by removing CAS (leave connected to loom), turn key to ON, and rotate CAS shaft by hand.

To test the FPR, you need a pressure gauge to insert between fuel filter and fuel rail.

If you remove the fuel rail from the manifold, you can then inspect the injectors to see what they do when:

1 - Prime (turning IGN to ON).

2 - Crank - turn IGN to START

In case of 1, there should be no fuel coming out of the injectors. In case of 2, you should see each injector spray fuel as engine turns over.

You can simulate 2 by removing CAS (leave connected to loom), turn key to ON, and rotate CAS shaft by hand.

To test the FPR, you need a pressure gauge to insert between fuel filter and fuel rail.

THANKS FOR THE ADVICE ELK

just a q though with the rb20 fuel rail the injctors dont bolt in they just sit in the rail,

if i try to test them wont the pressure of the pump blow them out of the rail?

that is the reason why i havent alredy checked the injectors cuz everythin is out neway but i thought that if there was pressure on the rail they would shoot out :confused:

had this happen to a sr20 when we tried to run larger injectors on the stock ecu (sard 650's). Make sure they are stock injectors, which should have red tips on them (270cc high impedance). Running injectors with incorrect impedance might cause this too.

But they are definately stuck wide open.

had this happen to a sr20 when we tried to run larger injectors on the stock ecu (sard 650's). Make sure they are stock injectors, which should have red tips on them (270cc high impedance). Running injectors with incorrect impedance might cause this too.

But they are definately stuck wide open.

yep they definatley stockos red tops, anway im having them test tomorrow so ill keep ppeople posted

PS what bout my spark problem?????? :confused:

THANKS FOR THE ADVICE ELK

just a q though with the rb20 fuel rail the injctors dont bolt in they just sit in the rail,

if i try to test them wont the pressure of the pump blow them out of the rail?

that is the reason why i havent alredy checked the injectors cuz everythin is out neway but i thought that if there was pressure on the rail they would shoot out :confused:

You're probably right there. :Oops: Been a while since I touched the injectors in the RB20. I know the L24E and RB25 have the injectors firmly attached to the fuel rail.
You're probably right there.  :Oops:  Been a while since I touched the injectors in the RB20. I know the L24E and RB25 have the injectors firmly attached to the fuel rail.

LOL

no worries mate, im bitting the bulletand giving a local auto elect a chance they r a specialist in EFI,

GIVING THAT HE AND HIS OLD MAN HAVE A COMBINED EXP OF BOUT 40 YRS

than ill give them a go ill keep u posted on the progress

im betting that there is one or two wires not connected and maybe not pulsing the injectors but holding them open??

oh well thanks anyway

ill post soon

:D

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


  • Similar Content

  • Latest Posts

    • Can perhaps see how the R33 appreciators would think so.  
    • Thanks, I removed the fuse and the relay from the car and made my own circuit with them to test them with a test bulb.  I will look for the wiring diagram and go from there.
    • Jdm DC2R is also nice for a FF car compared to the regular hatches of the time.
    • Now that the break-in period for both clutch and transmission is nearly over I'd like to give some tips before I forget about everything that happened, also for anyone searching up how to do this job in the future: You will need at least 6 ton jack stands at full extension. I would go as far as to say maybe consider 12 ton jack stands because the height of the transmission + the Harbor Freight hydraulic platform-style transmission jack was enough that it was an absolute PITA getting the transmission out from under the car and back in. The top edge of the bellhousing wants to contact the subframe and oil pan and if you're doing this on the floor forget about trying to lift this transmission off the ground and onto a transmission jack from under the car. Also do not try to use a scissor jack transmission lift. You have to rotate the damn thing in-place on the transmission jack which is hard enough with an adjustable platform and a transmission cradle that will mostly keep the transmission from rolling off the jack but on a scissor lift with a tiny non-adjustable platform? Forget it. Use penetrating oil on the driveshaft bolts. I highly recommend getting a thin 6 point combination (box end + open end) wrench for both the rear driveshaft and front driveshaft and a wrench extension. These bolts are on tight with very little space to work with and those two things together made a massive difference. Even a high torque impact wrench is just the wrong tool for the job here and didn't do what I needed it to do. If your starter bolts aren't seized in place for whatever reason you can in fact snake in a 3/8 inch ratchet + 6 point standard chrome socket up in there and "just" remove the bolts for the starter. Or at least I could. It is entirely by feel, you can barely fit it in, you can barely turn the stupid ratchet, but it is possible. Pull the front pipe/downpipe before you attempt to remove the transmission. In theory you don't have to, in practice just do it.  When pulling the transmission on the way out you don't have to undo all the bolts holding the rear driveshaft to the chassis like the center support bearing and the rear tunnel reinforcement bar but putting the transmission back in I highly recommend doing this because it will let you raise the transmission without constantly dealing with the driveshaft interfering in one way or another. I undid the bottom of the engine mount but I honestly don't know that it helped anything. If you do this make sure you put a towel on the back of the valve cover to keep the engine from smashing all the pipes on the firewall. Once the transmission has been pulled back far enough to clear the dowels you need to twist it in place clockwise if you're sitting behind the transmission. This will rotate the starter down towards the ground. The starter bump seems like it might clear if you twist the transmission the other way but it definitely won't. I have scraped the shit out of my transmission tunnel trying so learn from my mistake. You will need a center punch and an appropriate size drill bit and screw to pull the rear main seal. Then use vice grips and preferably a slide hammer attachment for those vice grips to yank the seal out. Do not let the drill or screw contact any part of the crank and clean the engine carefully after removing the seal to avoid getting metal fragments into the engine. I used a Slide Hammer and Bearing Puller Set, 5 Piece from Harbor Freight to pull the old pilot bearing. The "wet paper towel" trick sucked and just got dirty clutch water everywhere. Buy the tool or borrow it from a friend and save yourself the pain. It comes right out. Mine was very worn compared to the new one and it was starting to show cracks. Soak it in engine oil for a day in case yours has lost all of the oil to the plastic bag it comes in. You may be tempted to get the Nismo aftermarket pilot bearing but local mechanics have told me that they fail prematurely and if they do fail they do far more damage than a failed OEM pilot bushing. I mentioned this before but the Super Coppermix Twin clutch friction disks are in fact directional. The subtle coning of the fingers in both cases should be facing towards the center of the hub. So the coning on the rearmost disk closest to the pressure plate should go towards the engine, and the one closest to the flywheel should be flipped the other way. Otherwise when you torque down the pressure plate it will be warped and if you attempt to drive it like this it will make a very nasty grinding noise. Also, there is in fact an orientation to the washers for the pressure plate if you don't want to damage the anodizing. Rounded side of the washer faces the pressure plate. The flat side faces the bolt head. Pulling the transmission from the transfer case you need to be extremely careful with the shift cover plate. This part is discontinued. Try your best to avoid damaging the mating surfaces or breaking the pry points. I used a dead blow rubber hammer after removing the bolts to smack it sideways to slide it off the RTV the previous mechanic applied. I recommend using gasket dressing on the OEM paper gasket to try and keep the ATF from leaking out of that surface which seems to be a perpetual problem. Undoing the shifter rod end is an absolute PITA. Get a set of roll pin punches. Those are mandatory for this. Also I strongly, strongly recommend getting a palm nailer that will fit your roll pin punch. Also, put a clean (emphasis on clean) towel wrapped around the back end of the roll pin to keep it from shooting into the transfer case so you can spend a good hour or two with a magnet on a stick getting it out. Do not damage the shifter rod end either because those are discontinued as well. Do not use aftermarket flywheel bolts. Or if you do, make sure they are exactly the same dimensions as OEM before you go to install them. I have seen people mention that they got the wrong bolts and it meant having to do the job again. High torque impact wrench makes removal easy. I used some combination of a pry bar and flathead screwdriver to keep the flywheel from turning but consider just buying a proper flywheel lock instead. Just buy the OS Giken clutch alignment tool from RHDJapan. I hated the plastic alignment tool and you will never be confident this thing will work as intended. Don't forget to install the Nismo provided clutch fork boot. Otherwise it will make unearthly noises when you press the clutch pedal as it says on the little installation sheet in Japanese. Also, on both initial disassembly and assembly you must follow torque sequence for the pressure plate bolts. For some reason the Nismo directions tell you to put in the smaller 3 bolts last. I would not do this. Fully insert and thread those bolts to the end first, then tighten the other larger pressure plate bolts according to torque sequence. Then at the end you can also torque these 3 smaller bolts. Doing it the other way can cause these bolts to bind and the whole thing won't fit as it should. Hope this helps someone out there.
×
×
  • Create New...