Engine will not start after rebuild - suspect electrickery.

no oscar not that one a very thin one

 

Just went out to take a photo under my van and @oscar beat me too it! Here it is anyway! Thin red/white visible on bottom of solenoid.

 

The vintage bus diagram shows the wire from starter to DR as being 0.5 thickness and the thicker red/white one goes to the fusebox. So my guess would be that that rogue wire is what we need to get voltage from starter to DR.

Not sure how it's worked in the past if this wire has never been on. There must have been another wire going from some power - coil, battery, direct from ignition etc - to the DR. You've probably disrupted this in the build and as it's non standard given up for incorrect.

I'd stick it on the starter and give it a try.

The pump shouldn't get damaged as it won't be running dry for long hopefully. Get someone under the van and watch the fuel filter to watch for fuel pumping back into the system. If you don't get anything for a while then there could be an airlock but I wouldn't expect there to be.

 

old pic but the little thin one tied in a knot with a grubby white cover on it

 

That looks the same thickness as the one I just photographed on mine...

 

you can see the spade it should have gone on but never was, this spade is not on my new motor (the pic is old before i ripped the crappy hot start off etc)

 

was looking at oscars mate yours goes on a bolt not lucar?

 

edit ignore me i see now

 

In @oscars photo, his thin red/white is going to the same terminal as the thickest red. On mine the thin red/white is going to a terminal of it's own on the opposite side of the solenoid.

 

ok will try that on friday

 

i mean the theory i read from @stevebay was that if the fuel line was airlocked the pump wouldn't run as it should (we bypassed that) although when i did the fuel lines a couple years ago it didn't do it.

 

By the fact the pump runs when you bypass I'd say that it's fine, no airlock, the pump is electric so give it power and it will run. As I said, just watch the filter to watch for petrol coming through. You could try that before you try and crank, just run the wire you did before and get it running.

Watch the filter fill up, might be worth doing it anyway to refill the lines before cranking over...

 

Took some pics of my spare fuel pump dual relay wiring loom.

Starter end thick red and thin red with white trace


DR plug end



Fuel pump connections brown earth and red with blue trace is pos.

 

He might be right, when we corrected directly and I gave it a couple of quick whizzes, fuel hadn't got to it or even the filter which was surprising. Pity it was so late at this point. Pity it's so far away from me or I'd be back, but 2 weekends running is enough for me, I have some other stuff that needs getting on with this weekend.

 

Hummmm, if that is the case then you might have this as a second problem. The pump should still run if it's given power regardless of air lock, (you've proven this already), so I think you need to focus on that as problem 1.

Get power to it and see what happens.
Deal with any further problems.

 

Oh yes I thought yours was a later one, yes do a continuity check from the plug on the ECU to the two relay plugs.

 

ok can't do anymore until friday now as going over there tonight was such a rush after 10 hours at work, i'm about done with it until then as it's all that's been on my mind for the last fortnight.

 

Could be an airlock as before the pump it is just gravity feeding the pump

 

think i best do what stevebay said - summat about pulling the pipe off the regulator?