Problem after rebuild

[eyefi]

after an exhausting few days hitting the car with spanners i've finally finished the engine (gt35r single install), woohooo! so, i started it on monday and it's running really rough. i pulled the plugs and 3,4 & 6 were carbon fouled, cleaned 'em up started rough ran rough for a few seconds. pulled the plugs again, same story. the car is only running on cyls 3,4 & 6, if i pull the coil connectors on the other cyls it doesn't alter the idle. wideband reports very lean (expected if only 3 cyls are firing) or all over the place.

now might be a good time for some history :-

irridium plugs (came with the car) now changed for new copper ngk3330
new fuel system (aero fpr - flow tested 650's)
original coilpacks ('94 - 20k miles)
wiring & connectors look fine
new cams, crank pulley and cam belt
powerfc ecu (compensation setup for bigger injectors, on all injectors)
compression is excellent on all cylinders
car ran fine at BPU before stripdown (9 months ago).
no stock o2sensor, ecu set to "no o2 feedback"

i have moved the coil packs around and nothing changes, so coilpacks are fine.

i have a spark in all cyl's when cranking.

i have 12v at the injectors with ign on.

the injectors click with 12v applied directly (so i assume they are working).

i would imagine that plugs 1/2/5 should be wet with fuel when i remove them but they arn't so i think that when at idle these injectors are not firing, my next culprit to check is RLTC and it's connections.

im not missing something stupid here, am i? there's not some connector somewhere that i've left off that would cause these symptoms? or any other obvious things i should check?

thanks in advance.

[Martin F]

Originally Posted by [b

Quote[/b] (eyefi @ July 20 2005,09:31)]i have a spark in all cyl's when cranking.

How do you know this?

Lots of things to check, but i would say remove the RLTC from the equation and then see what happens.

After that i would be looking at the injector waveforms with an oscilloscope to see if that tells you anything.

Have you checked your static rail pressure ?

[eyefi]

sorry for the late reply i think i forgot to get email tracking. so first to answer your questions then to give an update.

plug out in the coilpack earthed & cranked (EFI1, i think, pulled).

static rail pressure is 36psi.

i noticed a few strange numbers in the RLTC setup and on further inspection the setup was very strange, the front and rear righthand side was set to be the driven wheels. i downloaded a backup dat and it worked fine. the relief . i have made the mistake of soldering in the RLTC to my field harness, i now wish i had used the supplied plugs.

i find it starnge that RLTC would still affect anything when in the off mode but i suppose if it's full of screwey data then strange things could happen.

thanks for the reply

[Martin F]

Originally Posted by [b

Quote[/b] (eyefi @ July 27 2005,12:48)]i find it starnge that RLTC would still affect anything when in the off mode but i suppose if it's full of screwey data then strange things could happen.

So do i, but i think that is one position on the selctor which probably needs more investigation.

At least its sorted now

[Chris Wilson]

You CANNOT just put an offset in for an increased injector size, in the Power FC, it plain doesn't work like that. it needs mapping from scratch.

[eyefi]

Originally Posted by [b

Quote[/b] (Chris Wilson @ July 28 2005,12:13)]You CANNOT just put an offset in for an increased injector size, in the Power FC, it plain doesn't work like that. it needs mapping from scratch.

eyup chris, i'm not quite sure what you mean. i'm expecting the car to need some mapping attention, i'm not hoping to just bung in 61% and thats it sorted. the injector adjustment does seem to be working for the startup and idle. after a couple of adjustments it's sat at 14.7 when warm at idle. the cold start needs a bit of playing with though but that's coming along slowly.

do you mean it just should not be used at all? if so can you explain why? the datalogit guys recommend it's use.

cheers.