1990 CBR1000FL...Sat for 14 years, alone....

[RideWithStyles]

Yes bet it was, It can only get better after those!

[Egon247]

Back in the man cave. 

I knew it would need some more stuff doing to it, so no huge surprise.

So, it's still starting on 3, it's not happy starting at all.

All the sparks are there so it has to be fuel related due to it being one of those simple engines with almost zero electronic stuff. 

 

The clutch has been ordered as anything over 50% throttle and it just goes "nah mate" and slips. Biting point is the last 10mm of lever travel too. 

 

Maybe some adjustable levers might fall into my basket....

[Egon247]

So. I'm still alive.

Clutch done, wasn't a bad job actually as you can do it without draining the oil. Just plop it on the side stand for a couple of days and then go to it. 

The hardest part is getting all the old gasket off. That took a while!

Bought an adjustable clutch lever too, so that went on with a bit of fiddling. 

Had to bleed the clutch again as it was doing precisely nothing after the change, so a bit of bleeding and it sounds ok. 

Forgot to soak the plates in oil, so started it up for a bit to get them oily and then left it. 

Then a bit of investigation on the starting issues. The carbs were out of balance AGAIN. so the diy doodad came out and I have worked out it's a shite site easier without the tank on to do the carbs. Got there in the end. It's starting a bit better. 

I'll give it a while then if it doesn't play ball I'll have each of the carbs in bits again. 

Onward and upward....

[Hairsy]

Great to hear you're still going. It'll be a sweet victory when she's done. Always enjoy your updates.

[Egon247]

Well. Back in the mancave again. 

Went out today as another shakedown to see if problems were cured. 

 

Some were, some weren't. 

 

Started better, still lumpy but a few minutes and it seems to settle down.

Went Dartford to Maidstone to have a nose in j&s and on the way back the fuel level dropped enough to need reserve. So at least the tube mod is working. Scared the crap out of me though.

 

Then, a couple of miles further on I went for a handful and only got revs, no go.

The clutch slipped again. 

Meh. 

It has new plates and springs so it can only be the hydraulic side of things now. The bite is right at the end of the lever movement too. 

Air? Dunno. 

 

Things to note from shakedown:

 

She's heavy.

I'm rusty.

Earplugs rock although I have a headache now.

Riding position is reinforcing the fact that I'm rusty and getting older....

 

Stay tuned for the next exciting episode of "ah Jesus, now what?"

 

 

[Hairsy]

I would think its unlikely to be the hydraulics - air in the system would make it impossible to get the clutch to slip enough, not to cause it to keep slipping.

 

Could be a slave cylinder issue, stopping the piston return to its proper position. Dirt or corrosion? If you're confident that the clutch was put back together properly then slave cylinder is where I'd start my investigations.

[Egon247]

59 minutes ago, Hairsy said:

I would think its unlikely to be the hydraulics - air in the system would make it impossible to get the clutch to slip enough, not to cause it to keep slipping.

 

Could be a slave cylinder issue, stopping the piston return to its proper position. Dirt or corrosion? If you're confident that the clutch was put back together properly then slave cylinder is where I'd start my investigations.

Yeah, I might just take it off again and have a look. I put a new seal kit in it and it seemed ok. 

Although it was a sod to bleed.

 

I rebuilt the master too, I wonder if there's anything in there that would stop it from returning all the way.

 

I'm off work for a couple of weeks so I can play while the clan are out.

Edited Monday at 15:59 by Egon247

[Egon247]

I also wonder if there's something in the fact it only did it when it was hot.

Maybe bring the oil and filter change forward (I was gonna do 500 miles on the new oil and filter then change it again, as it's been sat for so long) just in case. 

[Mickly]

17 hours ago, Egon247 said:

I also wonder if there's something in the fact it only did it when it was hot.

Maybe bring the oil and filter change forward (I was gonna do 500 miles on the new oil and filter then change it again, as it's been sat for so long) just in case. 

Stupid question, but you did use Motorcycle specific oil of the correct grade?

I’ve learned this lesson the hard way, used car oil after a rebuild knowing it would be chucked away after start up & promptly forgot.

Sent it to get the carbs set up on a dyno & the clutch was slipping like mad, had to drain and flush the oil plus clean the whole clutch, an expensive mistake.

[Egon247]

2 hours ago, Mickly said:

Stupid question, but you did use Motorcycle specific oil of the correct grade?

I’ve learned this lesson the hard way, used car oil after a rebuild knowing it would be chucked away after start up & promptly forgot.

Sent it to get the carbs set up on a dyno & the clutch was slipping like mad, had to drain and flush the oil plus clean the whole clutch, an expensive mistake.

Yeah, oddly one of the few oem things I've purchased. Bought a Honda oil filter and oil as I kinda figured it would need some home comforts on its way back to the road

I've just ordered a clutch master cylinder rebuild kit though, I've been looking at my receipts and with all the chaos I think I may have missed off the master cylinder on the "list of things that need rebuilding" list.

The adjustable lever is off as well as it doesn't look like it was returning far enough and I cba to Dremel the life out of it yet.