Following 93fxdl's advice, i removed the filter and drained it. I found there to be lots of bits and crud in the deisel so i thought i'd check just how blocked it actually was.
I read online that a crude check of a filter is to blow thru it (using clean pipe on the connector so not to poison myself). when i done this i could barely get any air thru it at all; so i have now come to the conclusion that the filter is majorly blocked.
The particals didnt look like fragments of metal so there is a slight hope the pump may be ok
A new filter has been ordered and i will edit this post to show the results.
The new filter made no difference
I took the fuel container that I drained out the old filter into and placed a magnet underneith....low and behold the particals where metal.....the pump is fubar!
I know the offical way of doing the job would be to replace the pump, rail, injectors, pipes, filter and clean out the tank...but is this my only option???? coz it is way too expencive!
My thoughts are;
1. Find a running sedona being broken down and buy all the parts i need (assuming injectors are interchangeable)
2. Have the pump re-built and injectors checked/repaired and hope the rail,pipes and tank are ok after a clean out
3. just stick on a second hand pump and prey.
Anyones input on this would be great! Thanx!