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  • #16
    Although I got the correct terminals second time around I still was referencing the wrong diagram. From the 20XE diagram (in the Haynes manual) it looks like my first attempt wouldn't do any damage as it looks like relay terminal 87(pin 37 on the Motronic) gets 12v anyway when the first relay is closed (if I have read the diagram right) And from the diagram I am guessing the wire bridge alone wont be enough for the car to run.

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    • #17
      When I put the relay back on Sunday I did give it a special engineers tap to see if that would help.

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      • #18
        Originally posted by H286 View Post
        When I put the relay back on Sunday I did give it a special engineers tap to see if that would help.
        I'd love to say that would work but it never has for me (or others from what I recall )

        But just test the easy way as I mentioned .... That way everything else is as it should be but you are just feeding the pump + to override that function of the relay leaving the other functions it performs to do what they do

        Good luck.
        My vehicles:
        1985 Astra GTE 1.8 8v, 2002 Omega Est, 1978 MGB GT, 1973 Honda CB500 K2, 1993 Honda Sevenfifty, 2005 Suzuki Grand Vitata .......

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        • #19
          Just test the voltage at the pump whilst starting it, make sure its got 12v.. If not do what the scrotes used to do to steal them back in the day, run a new wire to the pump to give it 12v permanent and try again

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          • #20
            Just to confirm that the pump +12v is the small terminal?

            I have taken a flying lead from the 12v of the battery direct to the pump small terminal - The pump whirls round nicely.

            As soon as I turn the ignition key to II (i.e. not to engage the starter motor) - the pump stops. Have I made a mistake here?

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            • #21
              The large terminal is +12V.

              The battery was getting flat so provided some assistance and powered the motor again but no luck........
              Attached Files

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              • #22
                however, when unplugged a ht cable to a gash spark-plug guess what happened?
                Attached Files

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                • #23
                  The engine started!!! I have no idea what I did to get it to work!!!

                  In the video the sound comes out different to real life.

                  The engine is idling a bit fast at circa 1200rpm.

                  It wont let me upload the video.

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                  • #24
                    http://thefatguy.co.uk/h20gte/2020/Video0032.mp4

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                    • #25
                      The car is working fine now. I brought some new ignition leads (Quinton Hazell) and the car has worked fine since then. Some random pictures here from other checks I made. Click image for larger version

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                      • #26
                        The plugs are quite black, but might need a good run to clean up (need to get hot enough to self clean)

                        compression reading is very low for these engines, would expect 180 or more psi. I remember you said in your other post it was heavy breathing which probably ties in with that. it will go up a bit if the test is done with hot engine, my first gte was puffing a bit of blue smoke with 165psi readings

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                        • #27
                          Three months since my last post! - I've changed the oil and done some odd jobs - it needs the cambelt changed so hasn't been used since end of March. I haven't got to the issue of the radiator not getting turned on but will sort all that once the cambelt is sorted.

                          The engine has had the cylinders honed - I can't remember if the piston rings were looked at - The cylinder head was off so they took the opportunity to do what jobs they could.

                          It definitely breathers heavy - oil comes out of every join! The cylinder head should be good has been done twice as It had Bill Blydenstein sorted the valves and ports but then later on the fanbelt came off and got ingested into the cambelt so that then bent all the valves so it went off to another garage to have all the valves replaced again. Bill said the head has been shaved a lot and recommended using a thicker head gasket. I believe it currently has a thicker head gasket.

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                          • #28
                            just to be clear - the cylinder head was done back in 2005 and the cylinders were honed at that time to. But the car has only done less than 10,000 miles since then.

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                            • #29
                              All the symptoms are poor ring seal, theres no two ways about it!

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