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Discovery Series II Ignition Leads

Trying to solve a low revs under load misfire when running on LPG converted Series II discovery - on my previous Series I Discovery a change of ignition leads solved the problem so thought I'd try the same on this one. Trouble is, I can't work out how I can get at the distributer end of the leads hidden at between the block and the bulkhead to change them.

A friend suggested looking behind the radio for an access panel but I think he was joking (apparently an old Fiat X/19 he owned had such an arrangement behind the driver's seat.)

I'm coming to the conclusion that changing the plug leads means taking off the inlet manifold and associated pipes and wires (and with all the stuff from the Prins gas conversion as well) just to get access so it looks well beyond me - so I'm hoping this group can (preferably) tell me the secret of the DIY approach, or at least confirm that it's a job for the professionals.

many thanks

Simon

Reply to
Simon
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so Simon was, like...

The Thor engine uses two double coils - effectively 4 coils firing 1/6, 7/4,

5/8, 3/2 with a lost spark. These are, as you say, mounted behind the engine against the bulkhead and are a bugger to get at. The ignition leads may well be part of the coil assembly (not sure) but it sure ain't the usual 5-minute job to change them.
Reply to
Richard Brookman

The leads are replaceable, but you need to remove the manifold to do so, I'm afraid. With the manifold off, you can just get at them!! Removing the manifold is pretty easy really, 6 bolts are all that hold it down, just label whatever non-std bits as you go. Tip - use 2 nuts to remove the water pipe mounting stud from the drivers side of the manifold, and replace the stupid hose clips on the throttle body with jubilee type clips on reassembly. " hours will do the whole job, easily. Alternator etc stays put, remove pipe stud, pipes at throttle body and 2 breather pipes, unplug throttle position sensor, idle speed control motor and vacuum valve, reach behind manifold and remove 2 upper coil pack securing bolts (8mm, either side of manifold rear centre bolt), remove 6 manifold bolts (10mm), one at rear, one at front and 4 in centre, remove throttle cables and lift front of manifold and tease out forwards and upwards. DO NOT re-use the gasket (£19 from landrover!!!) on reassembly or you will get inlet leaks. Struggle with HT leads, then reassemble. Badger.

Reply to
Badger

Thank you for all this advice - perhaps I'll try some new plugs first! and then maybe 'av a go Simon

Reply to
Simon

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