Injector Duty And Timing

[T.D]

Alright cool, I was planning on doing it that way but wasn't sure if it'd be the correct reading as I tried to test the VCT with the hand controller but when I unplugged the plug for the VCT, hand controller still told me it was activating and deactivating haha

Would using a multimeter be a more accurate measure?

[Don Dada]

The pfc will show an indicaton that it activated the circuit for it to work weather it is connected or not same as say the fuel pump,a/c etc....weather the device is connected or buggered or whatever that is a different story

PFC is a multimeter

[Beer Baron]

I'm pretty sure my car has been a manual all along though. Dash cluster is a manual one, the stock ECU that came out was a manual one and there was only one other owner of the car before me. Weird.

.....don't forget the half a dozen owners in japan before that guy too...

[T.D]

Ahhh I see. No dramas then, on my lunch break I'm gonna go sit in my car and start mashing the throttle without starting it haha

On one hand, I kinda hope the TPS is the problem as I'm starting to get over the fact my car barely makes more power than a midly-fettled GTS-t

[T.D]

.....don't forget the half a dozen owners in japan before that guy too...

FML

[T.D]

Would switching the grey and brown plugs around do anything?

[Don Dada]

Dont think thats even possible....diffferent connectors

[T.D]

Oh, I thought they were the same. Anyway, I thought that the TPS voltage was between 0.4v and 5v? I've got a S2 by the way, as I know the S1 have a different TPS.

[T.D]

Just a bit of an update.

Car overheated today as the rubber hose connecting the turbo water line to the block split and caused coolant to spray everywhere. Car had to get towed.

Which raises the question, if there was an issue with the cooling system, how much would this affect timing and if it does, what hardware will it affect to cause the timing issue (eg. the turbo becomes heatsoaked and in turn superheats the air)

Also worth noting the car has run hotter than normal since the timing issue surfaced, so not sure if timng issue and overheating issues are 2 isolated problems or are connected somehow.

Ideas and thoughts would be great

[twinky]

Oh forgot to mention, knock usually occurs in the upper RPM range. At first we thought it was a VCT issue as that's when the knock starts becoming very unstable but we've ruled out the VCT by running it both plugged and unplugged.

Also worth mentioning that the fuel rail around cylinder 4,5 anıd 6 has gone from the factory greeny-metallic colour to a heated titanium sort or bluey-rainbow colour.

[The Mafia]

if the car is getting hot, and is underpowered, then there is a very good chance that your timing is retarded.

Your CAS might be stuffed.

I'd be checking the timing with a timing light, and then if you do adjust the cas, I wouldn't be driving it around hard until a retune is done.

[twinky]

Ok thie relates to my last post ... Tried to copy info and add using the phone ... Didnt work ...

Anyhow, just thought, if there was no change between having vct connecyed or not, could that not indicate that the vct is not working?

Also, excess fuel flow is iften used the keep the fuel rail cool. The fuel rail gettinh hot to tye point if discolouraton my indicated that you hage reduced flow out of the rail and hence cooling flow to the rear injectors or you have something making it hot. This would heat the fuel and change the fuel flow out of them. If up, the ecu would lean out the others if flow goes down, well theres your knock.

Just my thoughts.

[The Mafia]

Good post twinky.

Fuel pump might e stuffed or a stuffed regulator or blockage somewhere.

Fuel starvation causing lack of power, also explains the detonation up top.

[Adriano]

Seriously if the fuel rail is getting hot enough to cause it to have discolouring , then you have much bigger problems.

[DVS JEZ]

Wow. Fuel rail getting hot enough to discolour sounds scary.

Check all spark plugs and see if theyre all the same

[wolverine]

I have a box of Rb25 fuel rails and most of them have the colours you describe once you clean off the sludge. IMO the colours are normal.