Thanks for the reply B@fink. It was the sender unit stopping it from getting out.

Now that I've swapped the pump I'm having trouble getting the (expletive deleted) thing back in again. I can get it down to about an inch away from home but it just won't go. I'm trying twisting and a reasonable amount of force but it still won't seat.

I've spent the last hour searching Audiworld and theres lots of talk of Elsawin and bently manuals but I can't find either.

Any help advice would be much appreciated.

thanks