Anglia 105E fuel pump

J

johnad

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Following on from my previous threads about issues with my 105e engine fitted in my boat
After all my questions on hear it finally runs ok after fitting new points, condenser, plugs, coil, etc
New alternator so now charging ok, also new fuel tank filter and fuel lines.
The only issue I have left is that if it has been standing for a week or so it will not start
Then runs for a while and cuts out due to fuel starvation (I think)
I have no fuel in the carb so its drainning back into the tank
I have to use easy start to get it running/pumping then it runs
So I'm suspecting the old Manuel fuel pump
So is it time to fit an electric pump ?
If so what one size etc ?
I'm also assuming I just power this from the ignition switch ?
More help needed please.
 
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I think an electric pump would be a good move too....bear in mind that the required fuel pressure for these old carburettors was in the region of 3 psi so any pump geared towards fuel injection systems would be too high.
Wire it through the ignition switch so it becomes live at the same time as the ignition coil.
John :)
 
Great thank you
Are they fairly reliable ?
I will order one today
Should I just leave the old one in place ?
 
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Yes, they are reliable.....most vehicles have an electric pump in the tank, submerged in the fuel. The beauty of an electric pump is that you have fuel on demand, without cranking the engine.
The old pump can be either left in place, or removed and a suitable steel blanking plate fitted to cover the hole in the block.
John :)
 
Yes, but with the old SU you could hear from the clicks if it was working or not;)
 
I had an SU pump on a Morris Oxford I converted to diesel but it was a bit intermittent, you would feel the power dropping off so you had to drive over a manhole cover or something similar and that would start it up again.:)

Peter
 
I seem to think the Mini SU pump was a short suck, long blow - on the rear subframe collecting all the road crap, and the Minor one was the opposite - stuck on the N/S front bulkhead?
John :)
 
Finally I have fitted the new electric fuel pump wired from the ignition switch
After charging the battery it started fine and ran for about 10 mins then just cut out ?
After a couple of turns it then restarted another 10 mins same thing just died
Could this be a fuel thing ?
The engine has now had new fuel tank, filter, fuel lines and pump
New plugs, points, coil, condesnser, and a new alternator
I'm now at a loss so any help would be appreciated.
 
I think, next time it cuts out, is to check if the float chamber is dry - but 10 minutes running is much longer than a dry carb would allow - and could indicate a component failing due to heat.
Do check any in tank fuel strainer or filter. How easy would it be to sort out a tank above the carb, just to give it temporary gravity feed?
Is the new coil getting hot, John?
John :)
 
All the fuel components are new tank fuel lines filter etc
But it would be easy to setup a temporary tank just to be sure
I will also check the new coil to see if it's getting hot
 
Has the tank got a vent to let air in ? The old "polish in the pinhole of the motorbike tank cap " as we used to say to the obsessive polishers.;)
 
Just scratching what remains of the brain cell.....just wondering if the pump has enough pressure to lift the needle valve off its seat - but if the thing can run for 10 mins then it can't be that bad!
Also wondering if the coil is meant to have a ballast resistor - where its a 6v coil, gets 12v to start up, then reverts back to 6v for normal running....maybe we've discussed this one before.
I'd also use quality points - I used to use Intermotor in the past and failures were frequent - as were the condensers.
The petrol pipe doesn't run close to anything very hot, perhaps?
John :)
 
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