Rich running problem on '05

[one_half_wuff]

Guys, I need a little help. Have an '05 636 that is completely stock it's got about 4500 miles on it and is running VERY rich. It hasn't fouled any plugs but it is puffing black smoke at low speed or when you roll it on and will tear your eyes in a matter of moments if you fire it up in the garage.

Any idea where to start. Coolant temperature sensor maybe?

Thanks, Wuff

BTW the bike was crashed. The tank was dented in enough to break the air box. All that was replaced but afterwards it ran rich. Where to look first?

[RunemThru]

Who did the repairs? They may have forgotten a vacuum hose somewhere.

[FuTAnT]

Check the throttle body inlet and exhaust clamps. I made a silly mistake one time of forgetting to do them back up properly when I did my shims and it ran super rich.

You can usually get to them from the side with a T-handled hex key. Just check they're seated properly and done up correctly, but don't go overboard, just nice n snug.

[one_half_wuff]

Originally Posted by RunemThru

Who did the repairs? They may have forgotten a vacuum hose somewhere.

Got it apart now, haven't found anything yet but will check again.

Thx
wuff

[one_half_wuff]

Originally Posted by FuTAnT

Check the throttle body inlet and exhaust clamps. I made a silly mistake one time of forgetting to do them back up properly when I did my shims and it ran super rich.

You can usually get to them from the side with a T-handled hex key. Just check they're seated properly and done up correctly, but don't go overboard, just nice n snug.

Checked them closely didn't find anything there either. But, the air cleaner was pretty dirty but not unservicable. That was rather a surprise considering it only has 4500 miles.

Since I made the original post it fouled a plug. I'm in the process of pulling the plugs right now.

More later, thanks guys.
wuff

[one_half_wuff]

Originally Posted by RunemThru

Who did the repairs? They may have forgotten a vacuum hose somewhere.

RunemThru:

Well you were right. After missing it (several times) I found that the Air Inlet Pressure Sensor's vacuum line was unplugged.

Wuff

[RunemThru]

Good to here. Ride safe and keep the shiny part up!