On my 1996 8v AGG, I'm getting fuel, but no spark. It cranks, but doesn't fire. I plugged in my friend's Snap-on Solus probe, but it just kept saying no communication. I read up on it and apparently, if an aftermarket stereo is fitted, it can mess up the port. So I've disconnected the stereo and ISO adaptor and did the tests as recommended. Still nothing shows up on the Solus' screen! Can anybody shed some light on this fault please? I'm losing my patience!!!