Help...2L engine backfire with flame and power loss

all through youre sugestions Arthur. just need to wipe out/vacume out the remaining powder{kinda looks like white talk scale} there was only a little grit{mud id say} sitting in the hollow the pick up sits in..
ill do the flow test tonight and if I get near a litre ill bolt it all up.
Trouble now is im scared to drive it....covertly that is...the missus is home tomorrow night so ill get her to trail me in the wee small hours...
just gotta check the timing again, fix a blinker and horn, rebolt down the floor and top up sterring box and swivel housings..only two small leaks so far{20 to start with} one is rocker cover but I feel its getting to mutch oil because theres no metering plug in the banjo bolt{ordered from blighty tonight} and a seep from the g box that has'nt left a drip in 2 months
I also need to order a fuel pump filter as there is no bottom one..
cross youre fingers
regards mark

do you have to prime the pump ?
it seems to pump freely from container to container but wont lift from tank..99% shure the 2 lines{tank to sediment filter and sed f to pump}are hole free ..only thing I can think oif is that theres a leak at a join or a pin hole in the fuel tank lift or........pump rubber that wont alow it to lift that high..
any thoughts?

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Originally Posted by mfc

do you have to prime the pump ?
it seems to pump freely from container to container but wont lift from tank..99% shure the 2 lines{tank to sediment filter and sed f to pump}are hole free ..only thing I can think oif is that theres a leak at a join or a pin hole in the fuel tank lift or........pump rubber that wont alow it to lift that high..
any thoughts?

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The pump is self priming .

One thing you can try is, holding a finger over the pump outlet and see how the pump reacts , it should stop . And put your finger over the inlet, you should feel a sucking on your finger .

The SU pumps can be buggers of things . Morris Minors used them too .

You may have to fit a new diaphram, the diaphram can become hard and lose its flexibility . The best place to buy a kit is from GOWER and LEE in the UK .

it dose with 2 containers {stop} but not when pumping air
ill re check for leaks between tank and pump or run a hose to a container on the ground just to see if it lifts it...pumping with a can in the engine bay it pours fuel through..

im down youre way on Thursday , if youre around I can bring that hood down for you to mesure

fuel lines back together filters clean...flow rate around a litre in 60 seconds .
when parked overnight it will click 6 times ... if its sat for 5 odd hrs it clicks once perhaps twice ,stop and start no click...far as I know{not a lot} that sounds like it should, what ya recon?
runs and revs as it used to standing in driveway ,but cant test it under load until I have the tow wife at hand.
ill let you know how it goes.
ps no inlet or exhaust manifold leaks ,possibly the bad backfires on the first run were a combination of to advanced ignition loose manifold bolts and buggered gasket.. post ignition ?

Sounds like you might have it beaten.
Looking forward to receiving a positive report from the road test. ;)

"I would only pull the tank out if the bottom was weeping, but if you need RedKote I found some on eHay, bit on the expensive side though, I am going to try a suggestion that plumbers PCV glue works as well, but I am yet to experiment with this."

I used fibreglass gel coat, from a boat place 30 yrs ago, 2 part, very thin, runs like water.

It is still there, still no leaks.

Terry

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Originally Posted by Xtreme

Sounds like you might have it beaten.
Looking forward to receiving a positive report from the road test. ;)

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might need dutch courage to just run up the driveway lol
I may take it for a run tonight if the tow womans up 4 it...basically it only needs to run well for a couple of blocks to get club rego then I can relax and sort it at lesure
thanks to all who imputed ideas thoughts etc

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Originally Posted by chazza

I have started experimenting with it since Back In suggested it. It worked faultlessly on an old rusty tin with petrol in it for about a week and then diesel. I am half way through doing my S3 tank, which needs another go because I missed bits inside,

Cheers Charlie

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Hi Charlie. I understood that the PVC glue is not actually a glue as such but a solvent that partially dissolves the PVC. I cant see how the solvent on its own would seal rust. I seem to remember some PVC was added to make the sealer but I am getting a bit fuzzy on this older stuff:(
Keith

[QUOTE=123rover50;1890603]Hi Charlie. I understood that the PVC glue is not actually a glue as such but a solvent that partially dissolves the PVC. I cant see how the solvent on its own would seal rust. /QUOTE]

G'day Keith,
Whatever it is, it appears to work! I always like to do tests on recommended products and see whether it does what the manufacturer says. Ian is correct - it works well! Try it yourself in the shed,

Cheers Charlie