Rb25De Help Needed

[two_nissans]

Recently put a r33 rb25de in our r32. Starts fine and idles perfectly however as soon as you go to drive it, it lacks power under throttle and runs "spluttery" ? Have replaced afm, coils, o2 sensor, fuel filter and pump and still no improvement. We are stumped as to what the problem might be. The problem"spluttery" driving feel seems to be proportional to accelerator position and not rpm. Have checked and adjusted tps and have app plugged in.

Any help greatly appreciated!! :-)

[Captain Natro]

Check the idel control valve/the hose running too it, if it's cracked/blocked it'll make the car run poorly

It's the hose that runs from the plenum to the airbox/intakepipe

Edited November 14, 2012 by Nikk_666

[two_nissans]

Unplugged idle control valve, no change. No blockages or leaks in hose either. Engine came from a running r33 and had no issues prior to this.

[two_nissans]

Unplugged idle control valve, no change. No blockages or leaks in hose either. Engine came from a running r33 and had no issues prior to this.

[WMDC35]

it's a 33 long motor with 32 loom ecu etc?

[two_nissans]

No 33 engine, 33 loom, 33 ecu ect. Wired in r32 plugs where required.

[Deza3000]

Only thing i can think of other than the ones listed is dodgy spark plugs.

[Reedo]

from what youve described im having the same issue with my rb25de in my 33. ive had a couple of mechanics look over it and they all think its the injectors. but they want close to 400 bucks to remove them and clean them for me. so tomorrow im pulling them out and going to d.i.y clean them. ill let you know if it helps at all. i also re gapped my plugs and it ran better for a while. if your running bosch plugs through them to the shit house and get a set of ngk.

[mad082]

normally i would say that $400 to pull them out and clean them is a bit much, but they are a pain to get to. i'd get a price on getting them ultrasonically cleaned if you pull them out yourself. that way you know that they are actually cleaned properly. when i was looking at getting my ones done a few years back, a mates workshop charged about $35 an injector to clean. i think that was including pulling them out though, but it was on something with easier to get to injectors than a rb

you may just need some new o-rings as well

[two_nissans]

Ok so basically car has been garaged while we moved house and did a few body repairs. Decided to try again. We double checked wiring, plugs, spark plugs, fuel pump, afm, still no luck. Decided to play around with the timing, set to full tilt one way and actually managed to have it running. Not great but enough to get from a to b. But....inevitably the problem came back.

Have just gone through with a bit of help from a friend and set correct rpm and timing and the problem is even worse. Its not even livable now.

Really clueless as to the cause of the issues and with baby due in 8 weeks i really need my car going! Any more ideas or suggestions all greatly appreciated!

[Reedo]

have u had the injectors cleaned? if u changed the timing thingy so it was running rich as balls that would have fixed the problem. seriously it takes me 15 mins to have my fuel rail out and then u can get them flow tested pretty cheap. i recon its your best bet atm.

[Reedo]

just having a think through this and i also thought of my other problem which was my coil packs were sparking up the sides of them. do you know how to check this?

[Johnie]

I have the same issue with my r34 is draining too much petrol atm and lost alot of power. so ill be driving around in a eg civic till its fixed lol, been told its my coilpacks witch i havent got around to change yet as its a pain to get to them arg damn neos lol

Edited January 28, 2013 by Johnie