smoking 200 tdi.... +not much go - sorted-ish

[Timmy511]

this was a little strange imo but....

my 200 tdi was smoking alot and missing whilst ticking over and cold, none of my others have ever done it so i wanted to sort it.

the smoke was whiteish and smelt horrid, basically unburnt fuel. the engine has been dicked with by the previous owners with a funky turbo and masive intercooler, there was also a recipt in the stack that came with the vehicle saying about trying to stop it from smoking.

so first i did a cam belt as it was time, and then did the pump timing. - it stopped miss firing whilst cold but still smoked.

so last night after reading all the pump tweeking thread i decided to tweek, first i did the diaphram, i took it to 0, then 45 and then 90 dgrees clockwise (there was a mark from the previous attempt to stop smoke, although i made my own where it was when we started.) it pulled a fair bit better and wasnt smoking whilst driving.

then i turned the smoke screw 90 degrees clockwise, and again it pulled better with no smoke whilst driving.

i started it up this morning from cold and what a difference! hardly any smoke!

was this because the pump wasnt supplying enough fuel to match the turbo and the intercooler causing it not to burn efficiently?

its nothing like my disco 200 tdi thats in my 90 but its alot better, is it possible to tweek it further? and how do you know if you have gone too far? can damage be caused?

cheers, Tim.

[Les Henson]

Tweaked pumps smoke at low revs, because they deliver fuel throughout the rev range. People usually have to turn them down at MOT time in order to get the engine through the smoke test.

Les.