Clicking noise

[richardsonstuff]

Hi all, just picked up an 89 K100LT CHEAP, It's been parked for over 10 years and passed down a few owners, nub of the problem is when you move the bike in gear it just moves, no need to pull the clutch it's making a clicking noise from the final drive area, won't be able to strip it down for a couple of weeks and wondering what's the most obvious fault?

[johnny]

greetings richardsonstuff...

welcome to motobrick,com...

that looks like a good motobrick you gotts there... just gotta getts caught up on some maintenance before you getts your yeeeehaaaaa...

id take the bags off... put it on the center stand... put it in gear... sitting by the final drive... rotate the wheel and feel and listen... if the wheel turns while in gear... well... thats not good... butts you maybe able to hear something in there...

id getts the engine running 1st... then take the rear end apart... gotts to lube everything back there anyway... would be good to know its gonna be a strong runner before taking it apart...

j o

[richardsonstuff]

Exactly my thoughts, seals are leaking on the injectors so fitting new asp, solid sparks on all four, it's going to have a full strip and rebuild so once it's a proven runner the major work will begin, I will post pics as I go along

[The Mighty Gryphon]

Nice bike.  Is it in as good a shape as the photos?  If so, I hope you don't do a cafe conversion.

First thing, the filler cap is backwards and will let rain in the tank.  There is a drain hole that is covered when the cap is like that.

As far as the noise, I am thinking Universal joint at the front of the drive shaft.  If it was mine, I'd start with making sure the engine is good, and then pull the transmission, and swing arm.  Do a complete spline inspection and lube, including the clutch splines.  You will also want to do the o-ring on the clutch while you're in there as well. 

The good news is that the transmissions are clunky, but fairly bulletproof and the drive shafts and final drives are fairly common and reasonable priced on eBay.  There is also a shop in Canada who can rebuild the driveshaft and final drive, but I hear he isn't taking any new business right now.  I have heard there is another rebuilder, but I can't recall who or where.  Maybe someone else can chime in with their information.

Good luck, looks like you have a nice project there.  Keep us posted on your progress.

[richardsonstuff]

I bought tas a cheap winter project and have considered cafe racers but everyone is going that way right now so I think full restorations on the cards with some nice powder coating too

[richardsonstuff]

Good shape apart from a fairing panel and mirror cover

[johnny]

id put a rs faring and rs bars on there and getts me some john day and mckenzie pass...

j o

[Snowman]

I'd leave it as an LT and put some miles on it. You are sitting behind one of the best fairings ever designed. I'd be looking at the UJ for the clicking noise in the rear end. As others have said; be sure the engine runs good before spending $$ on the rear end fix. Plenty of used parts around to keep the costs down. I have a '93 LT that has been stripped down the last nut and bolt, stoved the frame and refurbed items that needed it as it was put back together, great bikes, keep as is.

[richardsonstuff]

Ok how do I know the injectors are opening still gushing fuel from only NO3 injector top but no bang either, plugs appear dry after much attempt s, can I pass power through the injectors and see if the needle moves or can I do a resistance test in ohms?

[Scott_]

Sounds like they are stuck closed from old gas setting in them.

I can't say for sure if you can soak them in some techron, or seafoam, or something similar to help free them up.

If you have the time, and are in the states, Mr. Injector would be the ideal answer to rehab the injectors.

[Methersgate]

Agree about the fairing. It's s masterpiece.