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Gave it a good cleaning, cleaned plugs again and fixed damaged vacuum pipe. Now idles a lot smoother and revs well. Ran it up to temperature and test drove up and down road, a whole lot better! A bit hesitant under hard throttle but fine if gentle, may be an issue with the filter/Bosch 044...

Will give it a clean and then try again............

Hi Bushwhacker, Mine seems to be running a different MAF, wiring different colours. Did check that location for 5v.I am only getting 0.6v[IMG] Photo of MAF below. http://flickr.com/photos/1976so22/13083329614/

Hi, Anybody know how to check if they are working/dead? Running rough and fouling the plugs up, have tried two and both the same. Found an article about measuring resistance across the pins but I am not getting any readings at all. Cheers for any help

Good luck with the conversion. I am currently nearing the end of converting my 67 Mercedes SL, not the biggest of engine bays, but managed to get it in with the standard sump. Did have to convert it to rack and pinion as it was to tight to keep the steering box. Look forward to seeing more...

Another few weeks of not much progress. Changed plugs for a new genuine set, fitted spare set of leads and had wiring re checked, nothing discovered.Drained out fuel, cleaned filters and then put fresh fuel in. Car ran better with less of a misfire ran it up to temperature and shut down...

A further update, checked with a loan ecu, runs the same. Have checked the HT leads, 5 of them reading 15,000+ ohms, 1 reading 10,000, 2 of them reading below 5,000! Think a new set of leads is called for Will get some next week and give it another try, update to follow

Thought AFM might be an issue so changed it for a spare, seems worse so will revert back to the original tomorrow give it a run and see what happens. Thanks again for all the help

Disconnected battery for a few minutes before trying again. Is that enough to reset ecu

Update, both oxygen sensors replaced and still running rough. Checked the codes again 27, 29 and 78. Any ideas anyone?

So if I am correct would appear to be both oxygen sensors, guess they messed them up while welding/plasma cutting. Any idea of a good source, looked on ebay seems to be a massive difference in price? Hopefully a step nearer being back on the road

So we have codes, 21, 27, 29 and 78

Think more must be wrong, light just stays on?

Cheers, will give it a try

Not yet, still waiting.....have discovered while doing the steering conversion they have cut some of the exhaust shield away. Hopefully find some error codes later in the week.

Coil packs and ignitors swapped over, no change so changed it all back again and now it starts and then stalls....back to the drawing board

Am going to head to the spares car and grab igniters and coil packs, waiting for my friend with diagnostics kit to call in and plug it in. TBC

short video of car running, sort of. http://www.youtube.com/watch?v=Zcy2YcgvC0c Another set of plugs in, checked with Lexus to make sure they were correct. 6 of the old ones are black and sooty cylinders 3 and 4 wet with fuel. ????????

They say they didn't even know it ran, despite being driven off the trailer....upto £400 to fix broken ignition and wiring ( the joy an old Mercedes as a donor vehicle). A well known fabrication shop, not a back street garage! Another set of new plugs, new caps and rotors....still the same...

Car running perfect,went in to the fabricators for a steering conversion and came out not running. After sorting out issues with the ignition switch and various dash related bits that they managed to break we can now start and run but with a misfire. Have pulse on all the injectors and...