NRS91 Posted September 1, 2008 Share Posted September 1, 2008 . Quote Link to comment Share on other sites More sharing options...
Neo 21 Posted September 1, 2008 Author Share Posted September 1, 2008 ill second that unlike randyandy who said it twice Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted September 1, 2008 Share Posted September 1, 2008 Don't use a high power coil, you'll just overload the ignition amp and then have to replace that Quote Link to comment Share on other sites More sharing options...
NRS91 Posted September 1, 2008 Share Posted September 1, 2008 ok thanks Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted September 1, 2008 Share Posted September 1, 2008 Should you be interested, a cheap Rover V8 ignition amp upgrade here. I ran that setup on my RR with a very silly sports coil and it went lovely, and only £25 rather than £125 for a lumenition module. Quote Link to comment Share on other sites More sharing options...
NRS91 Posted September 1, 2008 Share Posted September 1, 2008 thanks mate Quote Link to comment Share on other sites More sharing options...
Neo 21 Posted September 3, 2008 Author Share Posted September 3, 2008 ok put new coil on as old one sparking about still not starting question if you take of the dizzy cap ign on and move the rotor arm should the coil still send a spark down the lt lead as this is what i am getting. fitted new potentiometer set it at 0.30v info says move throttle right open should read 4.5v only getting 3.7v would this cause non starting ? cheers Tony Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted September 3, 2008 Share Posted September 3, 2008 still not starting question if you take of the dizzy cap ign on and move the rotor arm should the coil still send a spark down the lt lead as this is what i am getting. I hope you mean HT lead, you shouldn't be getting sparks down the LT lead But yes, if you move the rotor arm enough that the amp is triggered then it will fire the coil. Throttle pot shouldn't prevent it from starting. Quote Link to comment Share on other sites More sharing options...
Neo 21 Posted September 3, 2008 Author Share Posted September 3, 2008 if i take the lt lead of the top of the dizzy put it near metal and move the rotor arm by hand it produces a spark from the coil and along the lead nice spark too so is this correct or a problem Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted September 3, 2008 Share Posted September 3, 2008 if i take the lt lead of the top of the dizzy put it near metal and move the rotor arm by hand it produces a spark from the coil and along the lead nice spark tooso is this correct or a problem To avoid confusion, note the lead from the top of the dizzy to the coil is an HT lead, the LT leads are the low voltage (12v) ones. If you take the HT lead from the top of the dizzy and hold it near the engine block and move the rotor arm such that you're triggering the ignition amp then yes, you should get a spark from the tip of the lead to the block. Unless you've got the HT disconnected from the coil, you shouldn't be getting a spark from the coil to anywhere. I'd try a different lead from coil to dizzy, it's not unknown for HT leads to break down. Quote Link to comment Share on other sites More sharing options...
Neo 21 Posted September 3, 2008 Author Share Posted September 3, 2008 cheers for that ht is what i meant, ok so not a problem there then i take it that means the amp is ok if it sending a signal back to the coil then Quote Link to comment Share on other sites More sharing options...
Coastcard Posted September 5, 2008 Share Posted September 5, 2008 I'm with BBC on the electrical side. Especially as it happened at the same time as main beam going. Have you checked around the steering column/behind the dash for worn or freyed wires? Thinks - Does the ignition need to be on (switch live) for RR mainbeam to work and is there a switched feed to the Injection loom /ECU? Quote Link to comment Share on other sites More sharing options...
steve_d Posted September 5, 2008 Share Posted September 5, 2008 ......i take it that means the amp is ok if it sending a signal back to the coil then Would be nice to think that but I have had amps fail where they would work at tickover but would not rev up. Have also had the failure mode where it would fail when warm but worked again when left to cool. Steve Quote Link to comment Share on other sites More sharing options...
Neo 21 Posted September 6, 2008 Author Share Posted September 6, 2008 I'm with BBC on the electrical side. Especially as it happened at the same time as main beam going.Have you checked around the steering column/behind the dash for worn or freyed wires? Thinks - Does the ignition need to be on (switch live) for RR mainbeam to work and is there a switched feed to the Injection loom /ECU? put a new dim dip pack on head lights are ok now rest of the wiring have checked seems ok Quote Link to comment Share on other sites More sharing options...
Neo 21 Posted September 6, 2008 Author Share Posted September 6, 2008 still not starting up have changed coil dizzy cap rotor arm plugs sometimes plugs are wet other times dry so checked the power resistor pack ohms readings low one minute then retry it again they go to the correct setting of 6 ohms also flapper not always flapping it sounds like it wants to start but just not right if you know what i mean Quote Link to comment Share on other sites More sharing options...
Neo 21 Posted September 14, 2008 Author Share Posted September 14, 2008 got it started at last now pumping out lots of black smoke afm on its way out ? new plugs and a bit of a timing issue seems to have sorted the starting Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted September 14, 2008 Share Posted September 14, 2008 Could be AFM or coolant sensor. I'd megasquirt it Quote Link to comment Share on other sites More sharing options...
Neo 21 Posted September 14, 2008 Author Share Posted September 14, 2008 i would too but this one belongs to me Dad the main thing is we got it started but will be testing both Quote Link to comment Share on other sites More sharing options...
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