Sink unblocker - second last resort!

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Sorry to come back, but in pic 1 (before I cut the pipe), should there be a water level in the drain at all? Shouldn't it just drain away into the main clay waste pipe or is there a trap in that as well - remember, I'm not a plumber.
 
GrumpyGrampa said:
Yes, the pipe is going under water...could that be the problem?
Click to expand...

GrumpyGrampa said:
Sorry to come back, but in pic 1 (before I cut the pipe), should there be a water level in the drain at all? Shouldn't it just drain away into the main clay waste pipe or is there a trap in that as well - remember, I'm not a plumber.
Click to expand...
There is the problem, the new water can`t escape because of the standing water already there. :eek:
 
I'd go for the drain unblocker rather the plunger for those pipes, waste pipe should end above drain grate and yes that standing water in the drain does act like a trap too.
 
I would run a hose into that drain and make sure it doesn’t back up and overflow. I’m guessing that normally the drain is under decking?? Do you couldn’t see if it’s been backing up
 
Was it grease that came out of blocked pipework ?a lot of people chuck the grease from frying pan ,Sunday dinner down drain causes a lot of these problems and pipework and the external gully drain is where it gets caught if you take off the elbow again boiling water is good put down the sink will come out like a grease bullet good luck with it
 
Snake worked (sort of).....Pressure pump worked (sort of).....did cause a little mess under the sink but not a problem. I really think I have to go under the floor and upgrade the pipes to the correct size and the correct way round. At the moment I have a 1.5" reduced to 1.25" and I know that can't be right. I suspect the blockage is at this join and the snake can't reach it. Anyway, thanks for all you advice, I really appreciate it.
 
Problem partially solved by "snake" - not much crud came out - but cutting the waste pipe to be above the water in the drain helped. Still unhappy with the rate of flow so I've asked a mate of mine (plumber) to help re-pipe under the floor (a real mess of joins and cross connections) where a 1.5" pipe is from the kitchen sink is connected to the 1.25" pipe from the bathroom wash hand basin and then to the outside world (pic 1). Thanks for all your advice.
 
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