Where is my fuel leak?

[allstaruk]

cool, just wondering if any one has an other suggestion\'s before i have to pull the fuel system, or can anyone shed some light on what i need to change on the power fc.

[Ricco_04]

There are a couple of things you need to change on the comander.  I\'ll just have to find my notes and i\'ll let you know.

[marxt2]

Guys
I had the same problem a couple of weeks ago. I changed my primaries to 850\'s and had the ECU set-up by WGT first as you can\'t just change the settings on the commander. Even if you enter the correct offsets it will still run extremely rich so take your ecu to a tuner first and they can put the settings in.
Regarding the fuel leak, same thing happened to me. The car started-up and run perfectly with the new ecu settings but when I was checking the engine over it was continually dripping fuel onto the garage floor. The reason for the leak was the rubber seals that go between the rotor housing and the fuel rail. When I had refitted it the fuel rail one of the seals had got twisted over. Remedy is to remove the rail and fit another new seal. Problem fixed.

[Ricco_04]

Thats the same problem I had. :yes

You can adjust it on the comander and mine was ok, it will fuel slightly more but not that much.  Its fine to drive to get it mapped - well mine was anyway! You just can\'t fine tune it on the commander.  Some readings need to be in tenth\'s but on the commander you can only adjust to half\'s, unless you use a datalogit.

[allstaruk]

so what setting\'s do i need to change on the commands i\'ve changed the injectors to 850\'s is there anything else?

[davehg]

i would say at a guess that you have not fitted your injectors correctly so they are leaking, you may of pinched the rubber o ring causing them to leak fuel into the engine and flood

[Ricco_04]

I\'ve just got them off my commander (can\'t find my notes so hope these are ok)

Go back into the injector menu and change to look like this :

[allstaruk]

cool. I suspect that there is a leak somewhere, whats the best way to test, should i take the rails out, connect them up and see if fuel comes out?

[Ricco_04]

That\'s what I did.  The one which was leaking I took out the rail to find the lower o ring had been nipped.  The rubber seals which go betwene the block and the fuel rail are not a pressure seal so if you completly flood the engine when the injector fires the fuel has nowhere to go except back through this seal  

Replaced them all, refitted, de-flooded & changed the engine oil.

I was told the parts take 2 weeks from Japan but Pip had them in stock - I would imagine most of the tuners do also

[allstaruk]

cool, how did you work out which one is leaking?

[allstaruk]

Right here is the plan what do you guys think, remove the rails hook them back up to the fuel pipes and turn the fuel pump on and see where its leaking from?

Alan

[nikp]

Good plan. That\'s what i did to check i had replace my primaries ok.

[allstaruk]

Right looks like i\'d better get on it then, meants the bloody primarys have got to come out again though, YAY more fun with the rats next lol.

Alan

[allstaruk]

P. nik you need to change yout avatar its out of date :->

[nikp]

P. nik you need to change yout avatar its out of date :->

Done!

BTW, you shouldn\'t need to remove the primaries if you\'re checking for leaks. Not to begin with, at least.