vw t4 diesel 2.4 van 1995 REG M 681 HGG - will not start

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Sun 13 Oct 2013 14:32
vw t4 diesel 2.4 van 1995 REG M 681 HGG - will not start - fisherman111

started fine friday but would not next day, did not use glow plugs and blue smoke came out of exhaust, left till sunday used glow plugs untill light went out DID NOT turn engine over did this three times then tried to start engine, still will not start and blue smoke came out of exhaust, I used glow plug untill light went out before turning engine over. if one glow plug fails to work, does this stop all the plugs from working. Any other idea's would be helpfull

Thanks.

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Sun 13 Oct 2013 17:00
vw t4 diesel 2.4 van 1995 REG M 681 HGG - will not start - dieselnut

You need to check if the glow plugs are working. If you have a multimeter disconnect the wire from each plug & test the plugs resistance, good ones will read about 1 ohm, duff ones will read either very high resistance or totally open circuit.

If you havn't got a meter, connect one side of a headlight bulb to the positive battery terminal & connect the other side of the bulb to the glow plug. The bulb will light on a good plug.

Also check you have voltage on the plugs immediately after switching the ignition to the glow position with a cold engine.

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Sun 13 Oct 2013 19:33
vw t4 diesel 2.4 van 1995 REG M 681 HGG - will not start - Peter.N.

As above but you can do an alternatave check by measuring the voltage across the glow plugs, connect the meter between any glow plug and earth, turn the ignition to the glow plug position, it should read 10-11 volts for about 30 seconds, if it doesn't read at all the supply to the plugs has failed possibly the relay, if it reads 12 volts or more all the plugs have failed, around 11v and probably 0ne or two have.

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Thu 17 Oct 2013 14:14
vw t4 diesel 2.4 van 1995 REG M 681 HGG - will not start - fisherman111

Thanks for your help, It turned out to be a relay problem a bad connection so simp0le when you know how again thanks for all your help.

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