disco 3.9 non starter

[marsie]

Last night my 1999(series1)discovery cut out and wouldnt restart.It has LPG conversion and was running fine and without warning just died .i have since found out there dosnt seem to be a spark and also after loads of cranking there is no smell of fuel(petrol or gas) even though the fuel pump primes when the ignition is switched on.

It has recently had a new distributor fitted(less than 100 miles) with a new link lead to the amplifier/coil.First port of call was the alarm spider.Pulled it out and soldered the link leads on like in bogmonsters thread but still no joy

So what i was wondering is -

1-how the ECU gets its signal to energise each of the fuel injectors(distributor or crank sensor)

2-How to test the distributor/amplifier

3-could the lack of spark/fuel both be linked to the distributor

4-am i looking in the wrong place

Help please,i havent got much hair to start with,but what i have got is being pulled out in lumps

Ta very much

Paul

[FridgeFreezer]

If it has a dizzy, then the ECU gets it's signals from the coil -ve terminal - so if the coil isn't being triggered, the ECU doesn't see the engine tunring and doesn't inject any fuel.

[marsie]

that was how i thought it worked. but thanks for confirming it.Ordered a immobiliser bypass lead today just to remove that problem once and for all.

The only other queery i have found upto now is that according to RAVE when a voltmeter is connected between battery(+) and coil (-)the reading should be 0v and when the ignition is switched on should remain at 0v but should increase when cranking.But i have got 12v with the ignition off 0.3v with the ignition on and when cranking

Paul

[FridgeFreezer]

Sounds like ignition amp then. IIRC they're about £35 if it's mounted on the dizzy. If it's on the wing under the coil, fit a GM one instead.

[marsie]

Brill diagnosis fridgefreezer ,spot on!!! swapped my dizzy for a good one i have and it fired straight up .At least now i have no worrys about the alarm spider either

Cheers fridgefreezer,top banana

Paul

[landi41]

Sounds like ignition amp then. IIRC they're about £35 if it's mounted on the dizzy. If it's on the wing under the coil, fit a GM one instead.

What on earth would we do without the expertise of some Forum members..........?

I swear there are chaps on here and other Forums, who know more about Land Rovers than Land Rover themselves........

[marsie]

,but to be fair,that aint difficult

Paul