... but the bloody thing wont start

We have spark, and fuel to the rail but not to the spark plugs (they are all bone dry).

Initialy we didnt have fuel to the rail as the hoses the wrong way round (doh) but after getting soaked in petrol turning them round we got that sorted.

I have followed the wires back to the ECU and they seem to be plugged into the right place. Im all out of ideas now so can anyone can think of what i have missed?

ETA - The petrol tank is also leaking but i cant see if it is from where the hose or the banjo bolt. The hose clip is as tight as it goes so i suspect it is the bolt. Will threadlock help?

[Edited on 19-9-09 by speedyxjs]

ECUs switch things by earthing them. When I did my install without thinking I supplied the injectors with a nice earth expecting the ecu to supply the power. Ditto coils. Doh!
Possible?

Maybe, il have a look tomorrow

Is there any way of checking to make sure there is power going to the injectors?

put a screw driver against one, when cranking you will hear them clicking away.

Have you the power resistor pack?

Also as above, the ECU switches earth so the other side of the injectors has a full battery.

Try squirting a bit of fuel into the TB when cranking, if the sparks are good it will fire, proving the injection side is the fault.

Regards Mark

[Edited on 19/9/09 by mark chandler]

quote:

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Originally posted by mark chandler
Have you the power resistor pack?

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quote:

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Originally posted by speedyxjs
Is there any way of checking to make sure there is power going to the injectors?

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have the injectors been used before? a friend had this issue where his engine had been built, dyno'd and then he put it in the car 6 months later and some residual fuel had dried out sticking them shut. a gentle tap freed them up......

This why you need it wired in.

There is a wiring diagram in there somewhere as well.

Without it may run, my xjs did not like it when it was unplugged

Ok, thanks Mark.

I will sort that out today

As said already Emerald Dave in his book on EFi recommends easi-start down the trumpets as a test for fuelling problems. If that doesn't work I'd check the whole spark situation- is it a good fat spark? Just because a spark happens at atmsopheric doesn't mean it'll spark when under compression.

Always found Easistart to be a bit harsh when starting an engine , in fact I think that the AA/RAC etc are no longer allowed to use it?. Brake cleaner works as well without being so harsh on the engine