I replaced the thermostat in my '99 MK IV VR6 last night and after getting everything back together, it won't start.
Turns over but won't fire.
I have double checked that the spark plug wires are all going to the correct connections (the only thing that I can think of).
It turns over strong and the headlights are bright so I wouldn't think that it is a bad connection anywhere.
Any suggestions on where to check.
I'm not super techie but can handle a wrench.