Pd tdi injector cleaner? please help

[jaz205gti]

Just some help my 130 tdi Ibiza only sometimes is a bit lumpy when warmed up , the problem seems to go when I pit In high quality diesel? I thought it was due to my idle needed to be changed however this cannot be changed manually. My mechanic said it could be a clogged up injector . I have put in injector cleaner and it did seem the make it less lumpy.

However people say that you shouldn’t put in injector cleaners in pd engines?

Is this the case? if not what injector cleaner should I use ?

Thanks

 

[Husbandofstinky]

I nice double dose of Millers (and continue thereafter) would help.

Forte's not bad stuff either.

 

[ChrisGTL]

Millers now do a product called;

Diesel Power Ecomax - ONE SHOT BOOST - 250ml.

This is slightly different in that it is stronger and has more detergent to clean up the injectors quicker.

 

[Andrewcupra TDI]

would all this detergent be bad for the rubber seals ive heard on recent posts regarding injectors ??

think it was MJ's thread
cheers

 

[ChrisGTL]

would all this detergent be bad for the rubber seals ive heard on recent posts regarding injectors ??

think it was MJ's thread
cheers

Does anyone know if the VAG range uses Viton rubber seals?

 

[MJ]

I dunno what they use but they cost there weight in gold. I used forte for about 3months without fault but i'm not sure how safe it is as my seals were leaking but i put it down to low quality supermarket fuel which uses alot of detergent.

The pd injector has 4 external seals:

1. a big brass one on the base of the injector (held on with a snap ring)
2. an orange rubber one just above the brass seal
3. a banded black rubber seal - below the fuel channel
4. a plain black rubber seal - above the fuel channel

 

[jolla]

Diesel in oil sump

I know this is an old thread but might relate to my current problem.

At the moment i have a leak of diesel that is ending up in the sump (luckily noticed level rose in sump before damage!). Was the injector leak you mention causing this (assuming it was blowing past the top o-ring of the injector into the head)?

If not anyone had the same problem, i can only assume its either injector leaking, tandem pump leaking into head or a crack in the head allowing diesel into sump (last one affects TD5 land-rovers occasionally).

Any help or advice greatly appreciated.

Cheers

 

[MJ]

The oil and fuel should not mix in the system. When mine failled to bottom seals had gone allowing fuel to leak into the cylinder and empty the fuel channels in the head.

Check your tendem pump gasket as thats the only place they could easily mix. Failling that i think you could be right with a cracked head.

When has this started from? since its been cold?

What other symptoms have you had?

Is it definatlely fuel in the oil?

 

[jolla]

Thanks for quick reply.

I bought the car back in march as a non-runner with 2 bent con-rods. It had filled the sump with fuel and hydraulic locked. I fitted 2 new rods and pistons/rings, had the bores checked and honed and had the injectors checked. The check showed that all 4 injectors had been damaged by 'contaminated fuel' so 4 reconditioned injectors were fitted. I emptied and flushed the whole fuel system including the tandem pump (but never replaced it).

Since then the car has run fine with no issues for over 10k miles and i checked the oil religiously. It uses about half a litre of oil every 1k or so (reducing usage as it bedded in). I changed the oil after 10k (simple oil and filter change, nothing else) and next time i checked it oil level had risen, though i might have overfilled it so drained to correct level and checked after another 200 miles and it has risen again!

Obviously i thought i had cured the problem when the injectors were changed but it has reappeared.

If it was the head cracked i can't understand how it was fine for 10k?

Tandem pump wasn't changed but was fine for 10k, where could diesel leak to sump in it anyway (through drive from cam??)??

Any thoughts and suggestions welcome, bill to fix last time was rather steep (bought it cheap as non-runner that time though!) and don't want a repeat.

P.S. local SEAT dealer have said they have seen 1 instance of tandem pump leaking into sump but i would like any ideas before shelling out £300 odd for a pump.

Cheers

 

[jolla]

Sorry, forgot to say,

Bit smoky when started from cold but starts OK and clears quickly (5-10 seconds),

No other symptoms apart from increased level of sump, definitely diesel, smells like diesel and oil is a lot thinner (diluted).

Cheers