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I got forwarded this message and recon you guys could lend some advice. I've tried to answer as best I can but have probably missed something: >FOR THE ATTENTION OF WILL passed on from paul at t3d >i have a real problem with my 1971 variant >it seems to be running rich with lots of black smoke >also apears to be running on 3 cylinders. ive done the >following checks with no results:- >points,condensor,plugs,leads fuel pump & regulater >dyno & regulater box, 5th injector has never worked >and has run fine without. PLEASE HELP AS IVE PULLED >ALL MY HAIR OUT TRYING TO FIX IT!!!!! My answer: Hi Dave, I'm not sure about the three cylinder problem but the richness could be down to a faulty air pressure sensor. Have you checked the air pressure sensor? Its found on the left hand side of the engine bay. Its got a pipe going in and part of the FI harness attached. It should be held in by two screws and is quite easy to remove. If you pull it out and suck (or blow) on the entry where the pipe attaches you should get no pressure loss at all. If you can suck and suck it means the diaphram has gone and the car can't regulate the fuel properly. I had the same problem of rich runnning and once I changed this it was sorted. A good book to get that has really comprehensive guides to the FI system is the Bently Manual. Paul could probably point you in the right direction as to where to get it form... I even think Amazon stock it. Also, I think, I've got some old printouts of FI trouble shooting, its written for the Porsche 914 but its the same system. I found it at http://www.estinc.com/porsche/djet.html Although I'm not sure if that link works anymore but your quite welcome to borrow the printouts. I'll also pass on the question to http://www.vwtype3.org/listarchive/threads.html They have loads of experts and if you run a query or search for Fuel injection there should be a lot of help. Give me a call if you want the printouts. Cheers, Will ______________________________________________________________ For up-to-the-minute music news, reviews and specials visit http://www.nme.com Get free e-mail (anyname@nme.com) now at http://www.nmemail.com The sender of this e-mail is NOT an employee or associate of NME, nme.com or any other IPC magazine. ------------------------------------------------ To unsubscribe, E-mail to: <type3-off@vwtype3.org> For more help, see http://vwtype3.org/list/