kpr Posted April 2, 2014 Share Posted April 2, 2014 those mitsi ignitors do break easy. wrong dwell etc Quote Link to comment Share on other sites More sharing options...
downtrail Posted April 2, 2014 Share Posted April 2, 2014 Yeah there average at the best of times not bad for 20 years of service tho! As kpr said swap to another channel on the ignitor and give it a blast. Dont keep trying with it ruined tho ull let the smoke out of ya coil Quote Link to comment Share on other sites More sharing options...
thegreatestben Posted April 2, 2014 Author Share Posted April 2, 2014 Ok swapped channel and spark came back. Flicked the dizzy around by hand with ignition on - have spark out of coil. Cool next check it's coming out of dizzy - yes timing light confirms. Awesome. Crank by key it dies, note not getting rpm signal on dash or on the hand control. Igniter hot again Quote Link to comment Share on other sites More sharing options...
downtrail Posted April 2, 2014 Share Posted April 2, 2014 Hmmm is there a setting for cranking dwell? And running? Or just a hard 3ms or whatever thats all you get type of deal and what is it set to? Quote Link to comment Share on other sites More sharing options...
kpr Posted April 2, 2014 Share Posted April 2, 2014 should only be couple of dwell options. something like 3/4ms and 4/5ms from memory its usually set on 4/5ms for the single coil setups Quote Link to comment Share on other sites More sharing options...
downtrail Posted April 2, 2014 Share Posted April 2, 2014 Wait turn ign on and check coil temp with hand wait a min or so shouldnt be getting hot if it is then spark output may need to be uninverted should be inverted at moment Quote Link to comment Share on other sites More sharing options...
thegreatestben Posted April 2, 2014 Author Share Posted April 2, 2014 This output signal is used to drive an external igniter module to produce ignition sparks under programmed control. IG1 is the output used when distributor based ignition systems are using the LINK, or similar factory igniters. When the signal is positive (+12 volts) then the coil will be in dwell, and when changing from positive to negative the spark will occur. This is the most common convention, but for igniters that require the opposite polarity use "IG2". Does the mitsi igniter need to be connected to IG2 instead then? Quote Link to comment Share on other sites More sharing options...
kpr Posted April 2, 2014 Share Posted April 2, 2014 nar IG1 should be right Quote Link to comment Share on other sites More sharing options...
thegreatestben Posted April 2, 2014 Author Share Posted April 2, 2014 Hmm, that's what its hooked up to currently. I didn't have any problems before I tutu'd with the dizzy today. Maybe filings have got into the dizzy and fucked it. Quote Link to comment Share on other sites More sharing options...
kpr Posted April 2, 2014 Share Posted April 2, 2014 make sure there isnt any filings stuck to the vr sensors, could be giving false triggers. i take it you have ground the teeth right down so rest of wheel is smooth/round. Quote Link to comment Share on other sites More sharing options...
thegreatestben Posted April 2, 2014 Author Share Posted April 2, 2014 I think its sweet as it fires off the spark/injectors bang on each remaining tooth, its not until I crank by key that it fucks out Quote Link to comment Share on other sites More sharing options...
Stu Posted April 2, 2014 Share Posted April 2, 2014 Ecu getting good voltage when cranking? They don't like it if its not Quote Link to comment Share on other sites More sharing options...
kpr Posted April 2, 2014 Share Posted April 2, 2014 yes check the above. how many volts does ecu see when cranking. also make sure its grounds are connected properly another thing you can try is hooking the cas to a drill or something. disconnect the ignitor and injectors. spin the shit out if the cas. make sure you have a solid clean rpm on hand controller. Quote Link to comment Share on other sites More sharing options...
downtrail Posted April 2, 2014 Share Posted April 2, 2014 whats your battery like? im not sure how well those old links deal with volt drop under cranking conditions possibly your cause the megasquirts a quite sensitive and will drop the rpm signal if the volt drop is too large. Quote Link to comment Share on other sites More sharing options...
thegreatestben Posted April 2, 2014 Author Share Posted April 2, 2014 Yes that was my initial fault, have charged battery, cranking good. Found timing way out, check all sorts, leads to me checking ecu with Link themselves who advise designed for 4 tooth system only. Had cranked it heaps and had no problem with spark/ignition other than it was occurring at the wrong time. Ground off the teeth then refitted. Sweet until I crank by key, think I've buggered the dizzy maybe. Might go round and get the old dizzy from other motor as it's no use to any one else. Quote Link to comment Share on other sites More sharing options...
thegreatestben Posted April 2, 2014 Author Share Posted April 2, 2014 Keep ideas flowing, got to go to bed now.... (f'in missus getting snarky) Quote Link to comment Share on other sites More sharing options...
downtrail Posted April 2, 2014 Share Posted April 2, 2014 lol so beaten!!! pop the plugs out and see if anything changes whilst cranking Quote Link to comment Share on other sites More sharing options...
kpr Posted April 2, 2014 Share Posted April 2, 2014 put a 16v head on it 2 Quote Link to comment Share on other sites More sharing options...
thegreatestben Posted April 3, 2014 Author Share Posted April 3, 2014 Tonights notes, went to pick a part. Got another mitsi ignitor the same as the old one. Also a Toyota one and wiring, just in case. Popped the mitsi one in, pulled the plugs out. spun dizzy by hand. Sweet spark on 1 & 4. None on 2 and a little on 3. Check spark coming out of coil - good. Getting new cap and rotor tomorrow. They are pretty fucked tbh. I guess excessive clearance in the cap would load up the ignitor eh? Quote Link to comment Share on other sites More sharing options...
Goat Posted April 3, 2014 Share Posted April 3, 2014 Get the old dizzy bae May aswell. Looks like the tooth count was the issue. If it worked on old motor it should work on new? maby? Quote Link to comment Share on other sites More sharing options...
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