Style Posted September 10, 2015 Share Posted September 10, 2015 (edited) My Supra is not starting at the moment and due to the rev needle not bouncing when I turn the starter I'm thinking my crank sprocket has separated from the trigger wheel. Is this something that can happen to NA's like it does with TT's? If so, do I need a welded crank sprocket as the NA and TT ones seem to look a little different? The NA's don't have a star pattern at the back from what I can see. NA sprocket: TT sprocket: Any help appreciated Edited September 10, 2015 by Style (see edit history) Link to comment Share on other sites More sharing options...
Lee P Posted September 10, 2015 Share Posted September 10, 2015 No as they do not have a crank sensor on the bottom pulley there is no timing star Link to comment Share on other sites More sharing options...
Style Posted September 10, 2015 Author Share Posted September 10, 2015 No as they do not have a crank sensor on the bottom pulley there is no timing star Awesome thanks Lee, that clears that up. Could the no start issue still be caused by the crank sprocket failing somehow? Dizzy etc is brand new so thinking the crank position sensor should be okay Link to comment Share on other sites More sharing options...
Lee P Posted September 10, 2015 Share Posted September 10, 2015 Awesome thanks Lee, that clears that up. Could the no start issue still be caused by the crank sprocket failing somehow? Dizzy etc is brand new so thinking the crank position sensor should be okay They do not have a crank sensor at all so no. Check the timing is ok though and that its sparking and got fuel Link to comment Share on other sites More sharing options...
Style Posted September 10, 2015 Author Share Posted September 10, 2015 They do not have a crank sensor at all so no. Check the timing is ok though and that its sparking and got fuel Okay so can rule that out then. Saves a big job at least I'm not getting spark which I've traced back as far as the ignition coil. I've replaced with a new one as well as a different igniter and still nothing. Everything forward of the coil is brand new (all the way to plugs). Thinking now is that the crank sensor is faulty or something. Car was running fine until it just started to die every now and then. Would start after a good few tries and disconnecting the battery. Now it just turns on the starter and the rev needle wont move. Link to comment Share on other sites More sharing options...
evinX Posted September 10, 2015 Share Posted September 10, 2015 Okay so can rule that out then. Saves a big job at least I'm not getting spark which I've traced back as far as the ignition coil. I've replaced with a new one as well as a different igniter and still nothing. Everything forward of the coil is brand new (all the way to plugs). Thinking now is that the crank sensor is faulty or something. Car was running fine until it just started to die every now and then. Would start after a good few tries and disconnecting the battery. Now it just turns on the starter and the rev needle wont move. Fuel? pump, injectors? Link to comment Share on other sites More sharing options...
Style Posted September 11, 2015 Author Share Posted September 11, 2015 Cars not getting spark but I'll check for fuel once I've investigated the crank sensor etc. if it's not getting fuel as well as no spark then it must be ECU related id have thought. Pump and injectors were working fine before hand though Link to comment Share on other sites More sharing options...
David P Posted September 11, 2015 Share Posted September 11, 2015 The N/A crank and cam sensors are in the distributor, if you suspect any of them, swap in another distributor and see if it cures it. Link to comment Share on other sites More sharing options...
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