2.5na not starting any ideas

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Spartan117

Member
Posts
30
Location
North lincolnshire
Hi guys first post on here, so here goes. Currently restoring a defender and have gone to put the 2.5na engine back in (previously ran spot on) but it's not starting.it's only the chassis and engine so I've got a battery rigged up to the starter etc. and one to the fuel solenoid on the pump which I can hear working. Bled the fuel system with the union bolt on filter housing until I got a steady stream of fuel squirting out. I did the same for the fuel pump ( used bleed screw on top of housing) and got a squirt from there. But still nothing just turns over . Have to wait till tomorrow to get battery charged then i'll crack an injector pipe. But after that I'm running out of ideas. Can't tow it off as I have no brakes or steering etc Any suggestions please, cheers andy
 
When cranking crack each injector off and see if it will fire.

Have you given it plenty of glow plug heat?

Other than that rings sometimes stick and need a sniff of easy start
 
As you say, next step would be the injector pipes. You also need a good strong battery. Slacken them all off and tighten one at a time as fuel squirts out. You also need working glows. Try 20-30 seconds of glow before firing. Do not touch the accelerator otherwise you will cancel the cold start mechanism.

With my old 2.5NA, it was possible to start it without glows from cold, but it would require at least a minute of cranking, whereas it would fire right up when the glows were working.

Are you getting any smoke whilst trying to start?
 
Will try the injectors pipes.how can I do the glow plugs as it's just on a battery to the starter no wiring to ignition just a battery and touching the solenoid on starter, will try a squirt of easy start. Cheers andy
 
Something else just happened was priming system with lift pump primer then it went slack asif it wasn't pumping

Probably just off the cam a little. Turn the engine over a little by hand or flick the starter to move it on.

Will try the injectors pipes.how can I do the glow plugs as it's just on a battery to the starter no wiring to ignition just a battery and touching the solenoid on starter, will try a squirt of easy start. Cheers andy

The glows are earthed via the engine block. Glow 1, 2, 3 & 4 should already be interconnected. There will be a loose lead from glow 4, probably yellow or green. Just connect this to + for 20-30 seconds, then disconnect and try starting.
 
It lives!!!!! Cheers for your help guys. Put a new earth lead from block to chassis on and preheated the glow plugs then used a tractor battery with a squirt of easy start and finally it struck up. Thanks for the quick replies
 
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