After replacing the leads which I presumed I fitted correctly, I getting constant miss fires on Cyl 3 & 8,(Hawkeye live data says it's happening every time the injector fires.) So I'm only running on 6 cylinders. Both of these ignition leads are on the same coil except 1 being upper and 1 lower. As I can not get my fat hands behind the plenum, i'll involve pulling the plenum off again to get to the coil.
Wondering if it could be that the coil failed or is it most likey be a mix up of leads.
AT REST
Working from the plug connectors, test each pair of leads for continuity, ie 18436572 being the firing order make sure 1 is connected to 6 via the secondary winding, and so on (8-5, 4-7, 3-2). Find the odd ones out and reconnect them as needed. Remember to use a high enough ohms setting for 2 leads and 1 secondary in series.
Master
It may be as simple as just puhin i on a bit more they do go on by two stages or may be you have a crack across the coil.
I also have big hands try moving the wire harnes on the fire wall that gave me a bit more room to get in not much but a bit..
I've got gas plumbing there as well lots of wiring also.Originally Posted by boofdtl
We I pulled the coil out and checked for cracks and to see if I had mixed up the wires,. Wire were ok in correct positions. I pulled 2 leads for 8 and 3 and replaced those with the 2 leads I recently removed.
The miss fire is still there when I run on petrol.
Yet when I run on LPG it is not there.I suppose the LPG computer might emulate?
I might change the plugs from those 2 miss firing over to another cylinder and see if the fault changes to cylinder I forwarded the plug to.
That's for a job tomorrow.
AT REST
The gas ECU is reading petrol signals, it doesn't invent them. So your two non-functioning petrol injectors have either 1. failed, 2. the plug fell off, 3. the LPG interception wiring is faulty. Lets face it you said the injectors were reading as faulty. If the system is using an interception loom for the gas ECU look carefully at the replacement injector plugs. They aren't nearly as good as OEM, I won't use them any more. Sometimes the pins dislodge and fail to connect. Time to take the manifold off again...We I pulled the coil out and checked for cracks and to see if I had mixed up the wires,. Wire were ok in correct positions. I pulled 2 leads for 8 and 3 and replaced those with the 2 leads I recently removed.
The miss fire is still there when I run on petrol.
Yet when I run on LPG it is not there.
I might change the plugs from those 2 miss firing over to another cylinder and see if the fault changes to cylinder I forwarded the plug to.
That's for a job tomorrow.
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