Crank, no spark

[ando67]

Hello,
I know this topic has been covered, but I'm still stumped.
Replaced my 5ME with a 6MGE, and the engine cranks but not spark while cranking. Checked all the voltages as per the manual, and all OK.
As I release the starter, the engine sort of kicked over. I had a spare dissy and connected it to the igniter, and with the coil lead out, I could get spark.
For some reason I can't get spark while cranking, but get spark with the ignition on. I suspect that I could get the car to run by push starting it, but would prefer to get it started via the starter motor first.
Checked all the earths. Could it be igniter ? Voltage drops to 9v while cranking.
Any idea's/suggestions would be appreciated.
Paul

[CanadianBak'inSupra]

check your plugs, check all your wires, check all your fuses mainly your efi.
just go over everything really well something must have been missed

[ando67]

Reconditioned the injectors and now it runs , but only when I hard wire the starter. With the ignition on and running a wire from the starter and touching the battery, it starts and idles beautifully. A bit rough on acceleration, but I suspect the plugs or a faulty lead.

I bought another ignitor and coil and still no spark when cranking.

This is frustrating, as I've checked the voltages at the ECU for what feels like the tenth time. There is voltage at the coil when cranking.

The other problem I have is that the digital tacho isn't working either.

[ando67]

Hello,
had another try at fixing the no spark issue with the 6MGE, and found the problem. I disconnected the tacho connection, and the engine now starts. Now I just don't know why.
Has anyone come across this before, when swaping a 5ME with a 5/6/7MGE. The ignitor is different between the 5ME and the 6MGE, so I was wondering if there is some sort of modification I need to do to the tacho, to make it work ?
Paul