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Mondeo Mk2 1.8TD Fuel system experts help needed

Need help regarding the fuel system on a Mk2 TD 1.8 Mondeo. I put car in for MOT & it failed the smoke test reading was 5.0. A pass is 3.0, took car to diesel specialist I have used for a few years without being very impressed with him. He had car for 2 days & charged =A3230 for new injectors & glow plugs. Car was absolutely fabulous faster smoother & with beautiful throttle response and a lot better on fuel. Ran it for a few days & put it in for MOT again it failed with 3.5. Took it back to garage he had it another day & said he had cut it right back car was absolutely gutless but it passed the MOT with 1.5. I had my driver take it back to the garage and he said they adjusted the vacuum valve on the side of the pump, but car was just as gutless. I went back and stood over him while he cut back the fueling with the internal screw on the pump, car was a lot better but nowhere near what it had been. Having seen how to adjust the fueling on the pump I have now reduced it by a small amount about 5 times but it does not seem to be making much difference. So it would seem the vacuum valve on the front of the pump which connects to the turbo pressure side by a rubber pipe is the thing that needs adjusting. Now my question is are there any experts out there who no which way and by how much to adjust the central screw on this unit and what is the relationship between increasing or decreasing fuelling and this vacuum valve

Many thanks for any help you can give

John

Reply to
Jon
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Setting up this pump cannot really be explained in this newsgroups as its too detailed. After so many adjustments of this and that, your are likely miles away from where it was!

You shouldnt have touched it when you had a smoke reading of 3.5- just cut the max revs down a tad to get a pass.

Tim..

Reply to
Tim..

Quite frankly, the garage shouldn't of touched anything on the injection pump. By the sounds of it, the car just needed a good run (ie warm it up, then blast it to near the limiter in each gear to clean it out).

In all honesty, the only proper way to get it back to how it was before they tampered with it, will be by taking the pump of, and getting it set-up on a test bench.

Only other thing you could check, is that they've not wound in the max speed screw to reduce max revs.

Reply to
moray

Thanks for your reply No the max speed screw is OK but this reving the guts out of it to clean out the carbon is a total old wives tale it makes no difference whatever. I have tried it many times in years past.

Regards

John

Reply to
Jon

There are only really two effective adjustments you can make the fueling screw in the pump & the Vacume unit adjuster screw, & if you mark the starting position & keep a careful record of how much you adjust it you can allways get back to your starting position. & the MOT Garage does not rev the car past 3000rpm anyway.

John

John

Reply to
Jon

In message , Jon writes

I've had diesels for the past 20 years (including the Mondeo TD) and it has certainly worked for me.

Reply to
Paul Giverin

There are only really two effective adjustments you can make the fueling screw in the pump & the Vacume unit adjuster screw, & if you mark the starting position & keep a careful record of how much you adjust it you can allways get back to your starting position. & the MOT Garage does not rev the car past 3000rpm anyway.

Pardon me what?!

Tim..

Reply to
Tim..

Thanks for your reply No the max speed screw is OK but this reving the guts out of it to clean out the carbon is a total old wives tale it makes no difference whatever. I have tried it many times in years past.

More absolute rubbish!!

Tim.

Reply to
Tim..

Thanks for your reply No the max speed screw is OK but this reving the guts out of it to clean out the carbon is a total old wives tale it makes no difference whatever. I have tried it many times in years past.

If you think so.

Reply to
moray

There are only really two effective adjustments you can make the fueling screw in the pump & the Vacume unit adjuster screw, & if you mark the starting position & keep a careful record of how much you adjust it you can allways get back to your starting position. & the MOT Garage does not rev the car past 3000rpm anyway.

Any chance of the garages details? I'm sure VOSA would be interested to know about them for failing to carry out a smoke opacity test correctly.

Besides, if you're getting a reading of 3.5 at only 3000rpm, then there are major issues with the engine.

Reply to
moray

Jon ( snipped-for-privacy@btinternet.com) gurgled happily, sounding much like they were saying :

Mmmm, it _does_ work.

A diesel that's been pootled everywhere will have an exhaust system that's clagged up with soot and crap. Using the full revs & throttle will clear that out nicely, and improve the performance no end.

A fine example was a ZX 1.9D loaner I had a few years ago - when I picked it up, it was utterly lethargic and struggled to top 80. After a week and

1500 miles in my tender care, I could not only clog it AND see out the mirror, but it was heading for three figures with ease, and much less tiring to drive, because you didn't have to thrape it quite so hard to get the damn thing to move.
Reply to
Adrian

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