Thanks. I understand your point and concern and wouldn't hesitate to call out an RGI if it was gas related. In fact, when the problem first arose I did call one out and he got it going this way.
I'm pretty comfortable replacing these components, I just don't want to spend money on something...
I have an 11 year old ideal classic boiler that is failing to spark into life. When this started a couple of weeks ago, I got it going again by removing a flexible tube from the fan assembly and blowing into it (the other end goes to the pressure switch). This kick starts the fan and...