had17462 Posted April 18, 2014 Report Share Posted April 18, 2014 (edited) Hi all , a friends tr6 been standing some time but he's decided to get it up and running ,but it's not firing only 5 volts on the tester at the points, any advice would be most welcome , Regards nick Edited April 18, 2014 by had17462 Quote Link to post Share on other sites
had17462 Posted April 18, 2014 Author Report Share Posted April 18, 2014 Hi all , a friends tr6 been standing some time but he's decided to get it up and running ,but it's not firing only 5 volts on the tester at the points, any advice would be most welcome , Regards nick Quote Link to post Share on other sites
Guest Posted April 18, 2014 Report Share Posted April 18, 2014 What about the battery? Menno Quote Link to post Share on other sites
RogerH Posted April 18, 2014 Report Share Posted April 18, 2014 Hi Nick, as Menno points out - what is the battery voltage. With the engine not turning over and the points open you should get 12V on both sides of the coil (SW & CB). With the CB closed you will get 12V on the battery/Switch side and 0V on the CB side (as they are grounded) With the engine turning over you should still get 12V on the Battery side of the coil but the CB side will shuffle up and down between 12V and 0V. With a simple meter you will get so sort of 'average' reading - you really need a scope to see the true volts. However being a TR6 it may have a ballast resistor wire leading to the coil to improve starting (it may have an 8V coil fitted) Therefore with the enigne running look for appr 8V on the battery side of the coil and something less on the CB side (it will be bobbing upo and down as before) Roger Quote Link to post Share on other sites
ianc Posted April 18, 2014 Report Share Posted April 18, 2014 Be aware that alternators (unlike dynamos) are not tolerant of flat batteries! If the battery voltage is low, then connect it to a battery charger and get it fully charged before doing further testing - you don't want to cook the alternator. Ian Cornish Quote Link to post Share on other sites
had17462 Posted April 18, 2014 Author Report Share Posted April 18, 2014 Ok thx guys, 12v at the battery ,+ coil 5 v ,- coil 5 v, points open 5v, earth wire to coil 5 v, no extra wire for ballast, sport coil ,tried another coil and condenser . Put a direct feed from the batt to coil and got 12 v . Nick Quote Link to post Share on other sites
peejay4A Posted April 18, 2014 Report Share Posted April 18, 2014 (edited) Duff ignition switch and/or wiring then. Does it start with the jumper? Edited April 18, 2014 by peejay4A Quote Link to post Share on other sites
Kiwifrog Posted April 18, 2014 Report Share Posted April 18, 2014 (edited) Faulty ignition switch ??? snap posted the same time as pete Edited April 18, 2014 by Kiwifrog Quote Link to post Share on other sites
had17462 Posted April 18, 2014 Author Report Share Posted April 18, 2014 Just tried to start it but no joy,with the jumper ,12v on the + and o v on the - side with points open. Nick Quote Link to post Share on other sites
peejay4A Posted April 18, 2014 Report Share Posted April 18, 2014 Standard diagnostics then. Spark present? Fuel present at the injectors, cone spray? Might need bleeding. Old fuel if it's been standing for a long time. Quote Link to post Share on other sites
had17462 Posted April 18, 2014 Author Report Share Posted April 18, 2014 Ok new fuel , with the jumper a nice spark without jumper a spark but not as strong,took number 1 injector out and have fuel ,plugs are new and wet. Nick Quote Link to post Share on other sites
Graham Harris Posted April 19, 2014 Report Share Posted April 19, 2014 I had the same problem with the 3A , started running like a pig and needed to get towed home. We tried all of the above and in the end changed the points and condenser and away she went. I don't know what was wrong with them but changing them did the trick Graham Quote Link to post Share on other sites
had17462 Posted April 19, 2014 Author Report Share Posted April 19, 2014 Will try new points next week Nick Quote Link to post Share on other sites
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