
 Originally Posted by 
plaven
					
				 
				This slow starting has been going on a while I see.
 
OK, to recap, head was taken off and machined, injector harness replaced at the same time (along with an awful lot of other items). I have since replaced fuel pump and battery.  Found the battery negative lead wasn't properly grounded, fixed that.
 
While poking about to work out what could be wrong, found oil at the red ECU plug, have cleaned that now twice.
 
Now after each time one of these things was done, starting improved.  However it's continued to get worse, to the point that it's a long draining start, lots of foot pumping and when it finally starts lots of exhaust, clearly too much fuel.
 
So I finally moved the D2 from the front yard back to in front the shed.  I took it for a bit of a run to make sure some charge goes back to the battery.  When I got back home, I turned off the engine.  Gave it a few seconds and then tried stating it again.  NOTHING.  So no residual pressure and a warm engine.
 
Looking through all the slow starting posts, I seem to be down to the following things:
 
Air bleed valve,
non return valve
Fuel pressure regulator,
injector seals and washers.
 
I'm thinking from a cost/complexity point of view - and a lack of a clue to diagnose the issue, I should go with replacing the parts in said order?
 
For some reason the thought of pulling the rocker cover off freaks me out a bit.  Put it down to a lack of confidence having never done it before.
			
		 
	
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