Author Topic: Too hell with these spark units Update: Fixed (Read 15693 times)

CB750F2 · « **Reply #100 on:** October 04, 2008, 04:32:16 AM »

OK Dids. I am thinking. The yellow wire goes from the transistor switch to the coil.The white and blue wires go to the pulse generators. The other side of the transistor switch which I believe is the caseing of the transistor should go to ground. Is there a connection between the blk/wh wire and the transistor? There has to be some other connection. Currently you are saying that the cap is connected across the blk/wh wire and ground and nothing else. Check closer. And please do those other checks if you can. Pat

CB750F2 · « **Reply #101 on:** October 04, 2008, 04:34:42 AM »

Not at this stage because we do not know what the device is. If you do the checks that I have listed you are checking the operation of the device. Pat

speedy gonzalais · « **Reply #102 on:** October 04, 2008, 04:42:29 AM »

Quote from: dids2008 on October 04, 2008, 04:21:43 AM

first test results Yellow pulsar resistance 531 (range 2), short leads 0.4 (range 200) resistance to ground 0.
Blue pulser resistance 509 (range 2), short leads 0.5, resistance to ground 0.
Primary coil windings yellow coil, 02.9 (range 200) blue 02.7 (200)

heres the first tests

CB750F2 · « **Reply #103 on:** October 04, 2008, 04:55:02 AM »

Ok. You are doing well. 500ohms for the pulse coils sounds good. When you say resistance to ground is 0 do you mean a high reading? The meter should go off
scale - similar to what the meter would read if the leads were not connected to anything. If the meter is actually reading zero ohms then you have a short to earth. Please confirm. Pat

speedy gonzalais · « **Reply #104 on:** October 04, 2008, 05:08:42 AM »

the meter reads 1 0 0 0 and the 1 is flashing when connected or disconected
And ive tested the v to the coils i think ive done some serious damage some where cause the rhs reads 0.76v and the left 4v.

CB750F2 · « **Reply #105 on:** October 04, 2008, 05:12:55 AM »

What coils are you refering to? The pulse coils or the ignition coils? Where have you got your multimeter leads connected to? Pat

speedy gonzalais · « **Reply #106 on:** October 04, 2008, 05:16:22 AM »

the ignition coils connecting the multi meter to the bk/white wire and the yellow or blue

CB750F2 · « **Reply #107 on:** October 04, 2008, 05:23:54 AM »

Ok. That telss me that the coil that measures .76v is hardly turned on at all and the other one is only partially turned on. I would expect a reading of around 11v if the spark units were fully turned on which they should be with the ignition on. Turn the ignition switch off and check the grounding on both units - very important. But please cintinue with the checks that I listed. Pat

speedy gonzalais · « **Reply #108 on:** October 04, 2008, 05:35:31 AM »

I am such a twat some times, I forgot the battery was almost flat im just popping out to borrow a booster il be back soon and i done the other test with the pulsers they are passive the readings where all over the place though but my mult meter auto detects the range and curent type so maybe thats why.

CB750F2 · « **Reply #109 on:** October 04, 2008, 05:37:54 AM »

Dids, please ensure that there is close to zero ohms between the spark unit case and the main ground connection on the bike. Do this check withe the main switch turned off. Pat

CB750F2 · « **Reply #110 on:** October 04, 2008, 05:40:52 AM »

What's making your battery go flat? I thought that you had a new battery. The few checks that you are doing should not drain the battery. Pat

speedy gonzalais · « **Reply #111 on:** October 04, 2008, 06:01:29 AM »

it went flat riding and i forgot to re charge it

CB750F2 · « **Reply #112 on:** October 04, 2008, 06:14:02 AM »

Ok. Keep going with your tests. Its 11.15pm here so we need to push on. Pat

speedy gonzalais · « **Reply #113 on:** October 04, 2008, 06:18:38 AM »

oh sorry i can carry on with the test and post results tomorow if you want

CB750F2 · « **Reply #114 on:** October 04, 2008, 06:20:03 AM »

No. Keep going. I will let you know when i want to pack it in. Pat

CB750F2 · « **Reply #115 on:** October 04, 2008, 06:33:21 AM »

Dids, you say that your battery goes flat while riding. That suggests that your alternator is not charging. The battery will go flat pretty quickly if it is not charging. Is that your trouble? Pat

speedy gonzalais · « **Reply #116 on:** October 04, 2008, 06:40:41 AM »

ok i cant find a electrical minded person untill he finishes work later, im now on the part of testing the coil bk/w wire and the kill switch one im not sure if this meter does the 10a dc one.

theres a red symbol that says 10a is that what i need

cheers

and the starting was my problem, since i messed around with them spark units its draining the batter in 10 mins with the lights on thers still 14v going into the battery so maybe the spark units are draining to much power and now im worried ive caused further damage to the electrical system,

CB750F2 · « **Reply #117 on:** October 04, 2008, 06:46:30 AM »

Sounds like it. However I would wait for your friend to turn up just to be sure. So I think that I will pull up now and get some sleep. Post your results and let me know when you will be back on line tomorrow your time. I take that you are from the UK? Pat

speedy gonzalais · « **Reply #118 on:** October 04, 2008, 06:56:32 AM »

ok thanks for the help im normally about at 10am uk time

thanks again

speedy gonzalais · « **Reply #119 on:** October 04, 2008, 08:45:05 AM »

finally this problem is solved, my friend tested the spark units and said they are fine he went on to test a few more circuits and made a big discovery, The earth that bolts to the chassis where the coil is was broken about 2 inches into the harness i didn't notice as the sleeving was OK but the cable inside had snapped. He said it was the battery that over heated the spark units, when i replaced the harness with the other one with the dodgy earth i created another problem

thanks for your help guys i really do appreciate it and i owe you one.

CB750F2 · « **Reply #120 on:** October 04, 2008, 04:42:15 PM »

Good one Dids. Did you complete the tests after the repair? I will continue to find a spare unit so that I can pull it apart. I will post my findings. It may take some time to get hold of one so don't hold your breath. I hope that I have been able to help you - its been a pleasure. Look at it this way - you now have a much better understanding of how the systems work on your bike and you will be in a much better position to fix problems as they occur. Pat

speedy gonzalais · « **Reply #121 on:** October 05, 2008, 02:22:25 AM »

Yea we did the rest of the tests the coils draw 4amps and this slightly fluctuates when the engine is cranked, and yea i do under stand quite a lot now i know how the ignition system works thats for sure.

CB750F2 · « **Reply #122 on:** October 05, 2008, 03:15:53 AM »

The fluctuating of the current is caused by the spark units switching on an off as the motor cranks. The collapsing of the current is what gives the spark. Good luck on your ride.Pat

speedy gonzalais · « **Reply #123 on:** October 05, 2008, 06:32:45 AM »

ok thanks again.

speedy gonzalais · « **Reply #124 on:** October 06, 2008, 03:47:07 PM »

Just an update the bikes still goin good had no more probs with starting charging or spark units, Im gonna attempt the trip soon hope she dont let me down

Thanks again

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Author Topic: Too hell with these spark units Update: Fixed (Read 15693 times)