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IanS last won the day on September 24

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About IanS

  • Birthday 04/05/1952

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    Ian Sumner

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  1. Fuse is to protect the wireing not the load. Most kit looms use 2 guages of wire, high current (from alternator etc) and normal which will be OK at 20A.
  2. If it works left and not right it is not the flasher unit. Hazard switches are a favorite for this followed by a short to earth on the right circuit.
  3. I am not certain how to choose the servo as I have not seen a list of servo gains. There is another variable which is the size of the master cylinder bore. A bigger bore will give a lower pressure and information on bore sizes is available.
  4. It is not the size of the servo that dictates its force gain. The size gives the maximum force. Inside the servo is a proportioning valve that sets the gain. There are 2 springs that set the gain, The only time I took one to bits I found that the springs had a lot of stored energy (as I expected) so precautions during disassembly need to be taken. https://www.youtube.com/watch?v=wbTUvp-tD5M Is a video that gives some idea of how these work.
  5. My attitude to this is to check continuity. With a volt meter measuring volts first check that both wires are at the same voltage. ( if volts are not the same then they are are obviously not connected) Then switching to a low resistance range check for continuity.
  6. IanS

    Starter button

    The main thing switched off during starting was the radio/tape player. This was to stop the tapes tangling, remember C90s and a pencil to try to get them staright.
  7. IanS

    Starter button

    As we use old cars as our doners I believe that all alternators need the indicator light to help them get charging so there will be some connection.
  8. IanS

    Starter button

    Quick sketch to show only the minimum wireing
  9. IanS

    Starter button

    My idea is that the alternator indicator can be used as an indication of engine running. It lights with engine stopped and goes off with engine running. So you probably will need a relay to do this. I would connect one end of the relay coil to a switched live and the other end to a normally open push button. I would connect the other end of the push button to the alternator end of the ignition light. With the engine stopped this will be near 0 volts and current will flow through the relay coil. With the engine running this will be 12+ volts and no current wil flow through the coil. The normally open relay contacts can then be connected to a switched live and the starter. I hope that this helps
  10. I should add that ECU controls hot idle by retarding ignition timing, adjusting the throttle body stop can confuse the ECU.
  11. There is a throttle stop screw on the throttle body that is preset for hot idle. Do not adjust without a very very good reason.
  12. https://www.ebay.co.uk/itm/163058114655?mkevt=1&mkcid=1&mkrid=710-53481-19255-0&campid=5338767030&toolid=10029&customid=eb%3Ag%3Avms%3Aeb%3Ap%3A163058114655%3BEAIaIQobChMI5M7Z2-Le8gIVErrtCh23pgkVEAQYAiABEgLYS_D_BwE&_trkparms=ispr%3D1&amdata=enc%3A1TVc_0P-_SCyOoDTfyi-j3g48&gclid=EAIaIQobChMI5M7Z2-Le8gIVErrtCh23pgkVEAQYAiABEgLYS_D_BwE Gives you an idea of what to look for, they are robust but do need cleaning every so often, a new one should be a very last resort.
  13. Idle Air Control valve is sticking. It is an electricaly controled valve that gives bypass air round the throttle body. (efectivly it changes the throttle stop by allowing more air post the butterfly valve, the ECU takes care of the petrol) It is held on by 2 screws and has a single electrical connector. Remove the 2 screws and spray carb cleaner into the body, refit and if I am correct the idle will be back. Too much carb cleaner is better than not enough, 20 second squirt should do.
  14. IanS

    Radiator leak

    From the picture it looks like a crack in the header tank plastic casting. Grind a V part way through. Clean, Clean, Clean. Dry, Dry, Dry. Fill with PU adhesive sealant, e.g https://www.easycomposites.co.uk/pu18-black-flexible-polyurethane-adhesive-sealant Allow to set. Top up coolant and drive. Good luck.
  15. CO2 should be a lot higher as the engine is burning hydrocarbon fuel ( petrol ) to CO2 and water. I think that you mean CO ( carbon monoxide ) which for carbed cars is either 3.5% or 4.5% depending on age. So even a fail here. Any Zero will probably new enough to not take advantage of visual smoke test only exemption for amature build vehicals. Is the temperature sender reading correctly as if the ECU thinks that the engine is cold it could be deliberatly over fueling.
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