Loose cylinder head bolt
 

Noticed bike was leaking oil earlier this week. Now trying to tighten up the nut but I'm not having any luck getting the wrench into the area. Pretty sure its a 10mm bolt since it fits on the back one. Thinking the leak is from the bolt being loosened over time and not needing a new gasket. Only a 2007 with 5,800 miles on it and oil change was done last month with replacing the oil filter.

Sounds like you are using the factory tool kit. A box end wrench would be better. 6 or 12 point box end. 12 would be better in this case.

I'll have to pick one up tomorrow. No clue where some tools are and no light doesn't help.

Ah............the familiar no light syndrome. I went half nuts with the lack of light and tried almost everything to brighten up the underground parking here. Finally found a clip on LED light that clips onto the beak of a baseball cap. It points where I look and far better than a strap on light for my head.

I would have a better light source if it wasn't for the mosquitoes love for my blood. I've got a fan blowing to keep them away and a small battery operated light to go by. Husband has no clue where one is either. lol

Holy crap! That bolt is flat missing on my bike. Gonna rob parts and replace it :eek:

Ok. That nut replaced.

Well tightening the bolts up fixed one leak but a new area started leaking oil.

My bike leaked at that bolt next to the spark plug, too. I took the bolt off, cleaned it up real good, and re-torqued it (the German standard, 'Guten-tight'!).

It wasn't leaking a lot, just a bit over the course of a couple hundred miles. I've traveled another 100 or so miles since, and it hasn't leaked again as far as I can tell. Definitely no more leakage on the fins / front like I was experiencing.

This nut was completely missing from my son's bike, seems to be a common issue with these. Wonder why Suzuki doesn't use some sort of lock washer arrangement?

Andrew

A couple drops of Blue Loktite would solve the problem.