MG ZT CDTI starting problems

Hi,

Hope one and all doing well.



Was thinking about buying MG ZT CDTI advertised as spares or repair, huge spec,

sat nav, sunroof, FHB, black alacantara leather, rear sun blind, electric seats, zenons etc.

Few wks ago posted problem regarding this car about extreme difficulty in starting MG ZT CDTI from cold and once hot, problem having got progressively worse over about 6 mth period until now not drive-able as so difficult to start.

Have actually bought the car for £650.

Any thoughts or further advice would be much appreciated.



Car done 165000 FSH.

Previous owner had local garage fit new glow plugs and reconditioned HP Pump in attempt to fix starting issue, to no avail.



I am hoping it is faulty injectors.



Yesterday carried out a diesel fuel injector leakback check,

thanks MarinaBrian for the how to.



With car running for 3 and half mins injectors 1,2&4 produced 50ml whilst injector 3 produced 55ml.



I assume this is ok or is this excessive and in fact all four injectors are faulty.???




Just for clarity:-

1). With engine off I clamped fuel return pipe after injector No.1. This to prevent diesel spewing out.

2). I pulled off all 4 clips around top of injector and carefully prized of the black plastic plug stuck into injectors.

3). I connected my leak back tester pipes into where the fuel leakback black plugs went into the top of the injectors pushing clips back on to ensure secure fitment.

4). Started car and left running until containers full, approx 3 and half mins.



Question:

Have read by removing return fuel pipes from injectors, clamping return fuel pipe after injector No.1, then disconnecting all 4 electrical plugs from injectors and at this point crank the car over I should see no diesel in tops of injectors and if I do then injectors are goosed.

Could someone clarify if this is the definitive test????



Some info on once started how car runs so folk get a better picture of my issue and hopefully some potential causes:-

Car takes over half an hour to fire up from cold. Needs fully charged battery and my other MG ZT Running with battery jump leads connected to get car turning over as fast as possible.

Lots of grey smoke during the half hours attempts and when eventually chuggs into life huge cloud of black smoke.

Once going is chuggy when first rev it but once revving does so freely.

Lots of grey smoke.

If leave idling for awhile then rev again black smoke and as said before initially chuggy until revs get up.

No power when driving until 2000 or so revs then pulls like a train,

Mixture of grey and black smoke when driving, not masses of it but none the less it's there.

MAF is disconnected.

When driving there is a whooshing whistling sound from under bonnet at about 2200 revs through to 2500 revs.

Car will start when hot but turns over for a good 30 secs then slowly splutters into life.

Any advice would be greatly appreciated.

Take care

Steve

Steve

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