Problem with 2004 GL1800

[Unc Flick]

I traded for a 2004 GL1800 with ABS it has 65K miles. It was making kinda a "whirring" noise for the first minute or two after you started it but it would dissipate (can't tell if it completely went away or just quieted down enough that the engine running masked it). My mechanic (not Honda certified) told me that he thought it was the alternator so I bought a new aftermarket alternator off of eBay. Seemed like a simple swap. Well now it won't start at all. Engine cranks, fuel is being pumped. Is there some sort of trick that we are unaware of that might cause this?

[Fatwing Chris]

OK I gotta ask.did you hit the kill switch by chance?
If not then how much did you take apart to get it in and out?There's a couple of different ways of doing it.I would go back in and check all things that were unhooked and then reconnected.

[Viking]

OK I gotta ask.did you hit the kill switch by chance?
If not then how much did you take apart to get it in and out?There's a couple of different ways of doing it.I would go back in and check all things that were unhooked and then reconnected.

And make sure your battery is fully charged, and is good. Bad Alternators have been known to result in dead or absolutely expired batteries.

[Unc Flick]

Yes we went back thru and redid everything and it appears there were no loose connections and the battery was fully charged. We took one of the cylinder covers off and discovered that there is no fire to the spark plug now. Any ideas what might cause that without replacing ECM/Stator, etc.? This thing ran fine before and I hate to drop a ton of money on possibly un-needed replacement electrics because you obviously can't return them if they turn out to be unnecessary.

[Steve F]

Again, we gotta ask if you checked the kill switch. Happens Waaaaaaaaaay too often to be overlooked.

[Unc Flick]

Like if the switch is bad or if it was just turned off?