Benzine
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| posted on 17/12/08 at 10:45 PM |
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Timing light & ignition question
I've got my exhaust finished  so I've been running the car a bit recently. After a 5 min run I tested the exhaust pipes to see if they
were all hot. All were except number 1 cylinder. Bit odd I thought... maybe an injector isn't working, swapped two of them around and the same
result...
So i hooked up the timing light to the number 1 HT lead and no light :S Then I checked the other leads... only two of them gave flashing light :/ Why
is that? Is that a bad way to check spark then? I must be getting sparks on cylinders 2,3,4,5 & 6, I could fry my breakfast on those
cylinder's pipes.
Why wouldn't I be getting a spark on number 1? I was doing when I tested it with the plugs out. I guess tomorrow I'll pull No 1 lead out
and hook it up to an old spark plug and hold it against the block. If I'm still not getting a spark what could be the problem? b0rked EDIS6?
Edis wired wrong?
The mental gymnastics a landlord will employ to justify immoral actions is clinically fascinating. Just because something is legal doesn't make
it moral.
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clairetoo
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| posted on 17/12/08 at 10:52 PM |
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Not likely to be the edis or it's wireing - either of those would knock out two cylinders since it's a wasted spark setup .
I'd guess it's a dead plug , or faulty lead .
Its cuz I is blond , innit
Claire xx
Will weld for food......
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omega 24 v6
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| posted on 17/12/08 at 10:53 PM |
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As the coil fires as 3 sets of 2 (wasted spark) then suspect the actual lead or the plug itself.
If it looks wrong it probably is wrong.
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adithorp
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| posted on 17/12/08 at 11:22 PM |
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Have you tried turning the clip the other way around on those leads? (assuming your using induction clip timing light) The current runs the other way
in one lead in each pair and some clips don't work the wrong way around.
adrian
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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BenB
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| posted on 18/12/08 at 10:03 AM |
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I'd vote for a dead lead or a poor connection at one end.....
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02GF74
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| posted on 18/12/08 at 11:07 AM |
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quote:
Originally posted by Benzine
maybe an injector isn't working, swapped two of them around and the same result...
what dod you mean by that?
did you swap them over still pluged in to orginal wires or swap the wires too?
Can you rule out no signal to the injector?
Most likely it will be spark......
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Benzine
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| posted on 18/12/08 at 01:12 PM |
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I just swapped the injectors over, wires the same
The mental gymnastics a landlord will employ to justify immoral actions is clinically fascinating. Just because something is legal doesn't make
it moral.
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David Jenkins
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| posted on 18/12/08 at 01:16 PM |
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Are you running an EDIS style ignition system with wasted spark?
Do you have a timing light that loosly clips over the ignition lead?
If the answer is 'yes' to both questions, try ignoring the little arrow on the timing light clip (the one they tell you should point
towards the plug) and put on the clip the other way round (pointing to the coil). You may be pleasantly surprised!
This happened to me - the engine was running really well, but I wanted to check the timing. Clipped on, and got a really poor flash. Did all sorts of
nonsense, then accidentally fixed the clip the wrong way round. I then got a really steady and strong flash!
As adithorp says, try it the other way.
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Benzine
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| posted on 18/12/08 at 01:46 PM |
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I just tried swapping the clip round as you both suggested and yes it works  So I'm getting good signals. I also tried the No 1 injector wire
on number 2 injector and that works so injector wiring is fine. Guess next thing to check is the spark plug itself
The mental gymnastics a landlord will employ to justify immoral actions is clinically fascinating. Just because something is legal doesn't make
it moral.
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Benzine
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| posted on 18/12/08 at 02:24 PM |
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Update: All working now
One of the electrodes on the plug was touching the main body (completing the circuit without a spark). I guess I must have dropped it in and then
tightened it up while it was still bent.
The mental gymnastics a landlord will employ to justify immoral actions is clinically fascinating. Just because something is legal doesn't make
it moral.
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