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Old 08-17-2012, 11:45 PM   #21
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Joined: Jul 2009
From: Anywhere I can get to on my bike

I Ride: 2000 GSX-R 750
“ Quote:
Originally Posted by MB2 View Post
/snip/

That said, I want to help you get it running - the best I can.

My question to you OP, why would the carbs need to be tuned? It sounded like your bike was running in the past. Why would you have done anything to your carbs that would have changed that, if it didn't improve it? Cleaning and jetting when necessary is one thing, but I'm not convinced it's necessary enough to be the big issue.
Yes, it ran. I had a few problems with it. But those got fixed. Replaced reg/rec. Replaced batter. Replaced stator.

Bike ran, but it ran VERY rich. Whenever I'd turn off the bike, you could smell the gasoline very prevelant, and very unburnt. I flooded the engine of the bike 3 times that I can recall. Why did I do the carbs? Because the mechanic at the shop said that the reason I was running so rich and flooding my engine was because my carbs needed to be jetted, and because my float height wasn't set correctly. These 2 facts were allowing to much fuel into the engine combustion chamber and the sending the unspent fuel into the exhaust.
One day I went riding with DaneilE36 and Davidian. Bike ran all day with no problems. When we got to U-district, i turned off the bike. Went inside, came back out and couldn't get the bike started. The engine would turn. The starter would fire. The bike made a chug-chug-chug. Almost like it wanted to start but just couldn't. The mechanic said that I probably fouled the spark plugs because the the carbs were bad. So i bought a new carb assembly. Took the bike in. They cleaned the new carb assembly, put the bike back together. But now instead of making the chug-chug-chug sound, the mechanic says it just spins freely. It whines, and spins freely as if the engine has no combustion. It sounds like the engine spins and whines as if the spark plugs are missing.

That's all I know so far. I'll know more in the morning. Sorry it's so long.

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Old 08-18-2012, 12:01 AM   #22
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From: Everett, WA

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“ Quote:
Originally Posted by 2 dizzy View Post
Yes, it ran. I had a few problems with it. But those got fixed. Replaced reg/rec. Replaced batter. Replaced stator.

Bike ran, but it ran VERY rich. Whenever I'd turn off the bike, you could smell the gasoline very prevelant, and very unburnt. I flooded the engine of the bike 3 times that I can recall. Why did I do the carbs? Because the mechanic at the shop said that the reason I was running so rich and flooding my engine was because my carbs needed to be jetted, and because my float height wasn't set correctly. These 2 facts were allowing to much fuel into the engine combustion chamber and the sending the unspent fuel into the exhaust.
One day I went riding with DaneilE36 and Davidian. Bike ran all day with no problems. When we got to U-district, i turned off the bike. Went inside, came back out and couldn't get the bike started. The engine would turn. The starter would fire. The bike made a chug-chug-chug. Almost like it wanted to start but just couldn't. The mechanic said that I probably fouled the spark plugs because the the carbs were bad. So i bought a new carb assembly. Took the bike in. They cleaned the new carb assembly, put the bike back together. But now instead of making the chug-chug-chug sound, the mechanic says it just spins freely. It whines, and spins freely as if the engine has no combustion. It sounds like the engine spins and whines as if the spark plugs are missing.

That's all I know so far. I'll know more in the morning. Sorry it's so long.
This is crazy.

You are throwing parts around like crazy, man. And as far as I'm concerned, without hearing more info, you're wasting money and not identifying the real problem before getting something done. It may not be your fault, but you need to stop buying/paying for things without them being diagnosed properly. That or you need to look a lot closer at your bike as a package.

I would check the petcock and carbs first. If the carbs are in working order (open them up...) then you may as well jet the bike (read your spark plugs first...) while your in there. If it doesn't start, then make sure you're getting fuel (let it sit).

If the starter is giving you issues (depends on how it sounds when you try to start) check your battery. Double check oil, try and turn the motor by moving the bike in gear - then try to start. These are all simple things that can tell you a lot more, or give you a better idea of what direct you need to go in.

There's plenty more things to try, but those are the first few things I would try - that are easy to explain. Try and find a repair manual for your bike (a factory one is probably best) and read the diagnostics for your issues. Work your way down the 'real' list.

Disclaimer: I don't claim to be a motorcycle mechanic, but I've dealt with my share of similar issues.

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Last edited by MB2; 08-18-2012 at 12:06 AM..
 
Old 08-18-2012, 12:10 AM   #23
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From: Anywhere I can get to on my bike

I Ride: 2000 GSX-R 750
Thanks MB.

I'll know more in the morning when I'm done at the shop. I'll send ya a message and let you know what happens tomorrow morning. i hope it's something simple somewhere that has been overlooked. I don't want to replace the motor.

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Old 08-18-2012, 03:42 AM   #24
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theres always a chance that it was running so rich that it washed/killed the rings.

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Old 08-18-2012, 03:55 AM   #25
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is it a bad thing to have to replace the rings?

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Old 08-18-2012, 04:47 AM   #26
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“ Quote:
Originally Posted by 2 dizzy View Post
is it a bad thing to have to replace the rings?
imho, if you have to get that far into the motor, might as well do everything.

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Old 08-18-2012, 05:01 AM   #27
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that sounds like it's gonna be expensive

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Old 08-18-2012, 06:02 AM   #28
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“ Quote:
Originally Posted by 2 dizzy View Post
is it a bad thing to have to replace the rings?
“ Quote:
Originally Posted by shelbyguy View Post
imho, if you have to get that far into the motor, might as well do everything.
“ Quote:
Originally Posted by 2 dizzy View Post
that sounds like it's gonna be expensive
Engine out of bike, disconnect cam drive, remove head, and pull cylinders, just to get to the pistons.

That could easily be $600 in labor alone, plus parts (rings, gaskets, etc.), so yes, it will be expensive.

If you go that far it would be foolish to not go the rest of the way and do the bottom end, assuming the top end is not really hashed. If the rocker assembly or camshaft is hashed you are getting into the fiscally ridiculous area.

If you have an insane attachment to this bike, and you can find a (qualified) friend who would be willing to hold your hand and coach you through the rebuild, this would be a great wintertime project for you. The bad news is this: it looks like you are going to be dry docked for the duration. It's not the end of the world, just a temporary pain in the nether regions. I had one of those mid summer "aw shit" noises coming out of my FLH, and had to bite the bullet and lose 9 months of riding, including 1/2 of the summer, while I was doing the overhaul.

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Old 08-18-2012, 06:02 AM   #29
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Cant seem to catch a break.. Sorry to hear that man, hopefully its nothing major and u can get back on the road soon.. let me know if u need anything ill b home all day

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Old 08-18-2012, 06:07 AM   #30
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I Ride: Yamaha R5, 250 Ninny, ZZR600
I wanna meet Barb....I bet she's smart

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Old 08-18-2012, 06:23 AM   #31
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I wanna meet Barb....I bet she's smart

what does barb have to do with it?

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Old 08-18-2012, 09:02 AM   #32
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Even an engine with toast rings will have some compression...your engine will not just spin like there are no plugs. Besides, chances all 4 cylinders are bad just like that is crazy slim. Its most likely starter slipping or timing is so off valves are open during compresssion.

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Old 08-18-2012, 09:24 AM   #33
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pull the plugs?

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Old 08-18-2012, 09:31 AM   #34
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“ Quote:
Originally Posted by WaGigKPN View Post
Even an engine with toast rings will have some compression...your engine will not just spin like there are no plugs. Besides, chances all 4 cylinders are bad just like that is crazy slim. Its most likely starter slipping or timing is so off valves are open during compresssion.
you apparently have never ran a 4stroke dirtbike to its death.

your talking about a mechanical thing.


anything is plausible

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Last edited by shelbyguy; 08-18-2012 at 09:34 AM..
 
Old 08-18-2012, 09:54 AM   #35
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I Ride: 05 KTM 625smc, 03 Are See fiddy one, 05 DRZ470SM, 95 FZR1040, 69 Combat Commando Roadster, 73 Commando Interstate, 67 BSA B44, 71 BSA B50
I'm gonna ask you what I asked you when you had this bike over at Robs maintanance day.
Did you check the valve clearance.
Yes or no?
Have the shop do a compression test and tell us the numbers.
Does the bike have spark?
What color?
What do the plugs look like?
Take pictures and post them here.

If you can't provide enough information for us to make an informed diagnosis...then I'd have to sugest you keep on throwing money at it, cause someone's taking you for a ride.

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Old 08-18-2012, 10:48 AM   #36
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I just went with Dana to the shop. The motor has some compression, but not much.

he needs someone dig into the bike with him for some tests. i'd be happy to help with a leakdown test if anyone has the tool.

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Old 08-18-2012, 11:22 AM   #37
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For the fifth time.
Measure the valve clearance.

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Old 08-18-2012, 11:40 AM   #38
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“ Quote:
Originally Posted by dragracer1951 View Post
For the fifth time.
Measure the valve clearance.
5 times? Let him go! Ya can't cure someone that don't/won't listen!!

If the most savey guy in this thread tells you to check something, DO IT!

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Old 08-18-2012, 12:30 PM   #39
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If the floats or needle were sticking, doesn't he run the risk of gas getting in the oil?

Has the oil level been checked to see if gas is present and diluting the oil in the engine. Don't know if R6's have a dipstick or window, but check oil level and smell for gas.

I would at least take of whiff from the oil drain plug and flush the oil from the engine.

Maybe the starter clutch was damaged from vapor lock and the whinning is just the starter motor spinning.

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Old 08-19-2012, 01:47 PM   #40
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I Ride: 2000 GSX-R 750
I've made arrangements to do a leek-down test this week. To find out exactly what and where the problem is. Will be adjusting the valves, and tuning the motor to the best of our capabilities to see if that helps. The leek-down should let me know where the problem is.

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