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MarkT Exhaust
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Author Topic: hard clunk upon starting  (Read 1960 times)
Stratnick
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Posts: 52


2000 I/S

West Tennessee


« on: December 03, 2011, 03:22:42 PM »

Need some help....I tried to start my 2000 I/S today and the engine turned a little then it stopped. Now, upon pressing the starter button, there is just a hard clunk sound (starter solenoid). I can hear the solenoid kick in and the starter make a hissing noise, but no turning.

Now some background information...A week and a half ago I started it up and ran it for 5 minutes or so. I then pulled it into the garage (in the basement), turned off gas and we left for a 4 day Thanksgiving trip. When we returned home, the house had a terrible petroleum smell. It didn't really smell like gas, so we thought it was residual exhaust smell from when I ran it before we left. (I did not run it inside the basement).
When I tried to start it today, there was a very strong gasoline smell. I have read about hydralock on here and so I put it in 5th gear and tried to push it and the engine won't turn over. My next step is to put a socket on the bolt under the timing cover to see if it will turn. If it does, I will assume a starter problem.
Can anyone tell me if I'm on the right track here? Could this be hydralock? The petcock was in the off position.....If it is hydralock, how do I get the gas out of the cylinders?
Sorry for the lengthy question and thanks in advance for any advice.
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fudgie
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« Reply #1 on: December 03, 2011, 03:35:53 PM »

Sounds like a lock to me.  Sad Take all the plugs out and give it a turn with the wrench. You might have to take the starter off and look to see if there is any internal damage. You need to fix the carb float problem and rebuild the petcock to. Or go with a pingel.  cooldude Sure alot of this lately.  Undecided
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Stratnick
Member
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Posts: 52


2000 I/S

West Tennessee


« Reply #2 on: December 03, 2011, 03:56:00 PM »

Engine turned fine with a socket on the crank bolt. Tried starter again and it turned over and fired. No gas in the oil. I began pulling apart the right side (removed air box thing from radiator and the chrome cover. At this point I discovered a pool of gas sitting on top of the engine on the right side and traces of where it flowed out from around the intake o-rings. I suspected these were leaking air anyway, now I know they were! At least the smell mystery is solved! Is this due to the petcock failing, as the gas was turned off?
So, do I need to  pull carbs and replace needles and seats and rebuild the petcock? What is the alternative petcock that you mentioned? I was going to clean carbs and replace slow jets anyway this winter, so now I have more incentive to do that.
thanks for the advice.
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Blackduck
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West Australia


« Reply #3 on: December 04, 2011, 03:59:02 AM »

If the petcock is not positioned correctly and the selector knob is jamming against the chrome bracket it will hold the valve of its seat. It also means the diaphragm is not sealing properly.
Either a bad diaphragm or a block bleed orifice in the petcock, this holds in vacuum and holds the petcock open.
Just take the fuel hose off the petcock and see if fuel flows with the valve in the off position,remove the vacuum hose and suck on it to work the diaphragm and check again.
Cheers Steve
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Ricky-D
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South Carolina midlands


« Reply #4 on: December 04, 2011, 10:10:21 AM »

If you can see where the gasoline ran out from an intake (O-ring) you can be sure you filled up the intake riser and probably that particular cylinder with gasoline.

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2000_Valkyrie_Interstate
Stratnick
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Posts: 52


2000 I/S

West Tennessee


« Reply #5 on: December 04, 2011, 03:02:19 PM »

If you can see where the gasoline ran out from an intake (O-ring) you can be sure you filled up the intake riser and probably that particular cylinder with gasoline.

***

it ran out of 2 cylinders on the right side. Intake rail orings definitely failed.
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Stratnick
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Posts: 52


2000 I/S

West Tennessee


« Reply #6 on: December 04, 2011, 04:45:24 PM »

Today I removed all spark plugs, turned the engine over and gasoline mist blew out of one cylinder on the right side. Starter turned perfectly. Gas tank and air box removed on my way to taking out carbs. 
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R J
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Des Moines, IA


« Reply #7 on: December 04, 2011, 05:36:11 PM »

Question for ya grasshopper.

Why aren't you messing with the petcock 1st?

What makes you think the carbs are your only problem?

Do the easy stuff 1st, then if it gets messy, you know you are on the right track.

Happy Holiday's Grasshopper.
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Stratnick
Member
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Posts: 52


2000 I/S

West Tennessee


« Reply #8 on: December 05, 2011, 06:03:36 PM »

Question for ya grasshopper.
Why aren't you messing with the petcock 1st?

What makes you think the carbs are your only problem?

Do the easy stuff 1st, then if it gets messy, you know you are on the right track.

Happy Holiday's Grasshopper.

I'm with you on doing the easy stuff first, but I was gonna clean the carbs anyway because it was showing signs of dirty slow jets. It's really weird that all this came down at the same time, but I'm glad so that I can get it all out of the way on one job. Got carbs out today and there's definitely crap in them...build up of varnish in bottom of bowl and there's crusty stuff on and in the slow jets. I ordered stuff from redeye and am searching for jets tonight. I don't want to do this job again any time soon! 
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Ricky-D
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South Carolina midlands


« Reply #9 on: December 06, 2011, 08:14:33 AM »

The varnishing effect is remembering how, after a carburetor sits for long periods of time, evaporation of the volatile elements of the gasoline leave the remaining components to coat and dry within the carburetor float bowl and we call that "varnish".
That is not what happens with ethanol enriched gasoline. The deposits you find in this kind of gasoline are organic compounds formed because of the oxygen rich mixture now present in the gasoline. Some are actually organisms that can multiply and grow in the gasoline and which can really cause a mess when the gasoline is undisturbed and allowed to sit for a time where the gasoline can actually start to separate and form layers of different composition.

This is the stuff you find in the bottom of the float bowls and clogging up the carburetors. No amount of screens and filters can alleviate this problem.

The best proactive program is doing what you already are doing. Adding additives to the gasoline.

As ethanol enriched gasoline becomes more mainstream I am sure we will see better products coming on the market to address this pain in the ass problem.

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2000_Valkyrie_Interstate
John U.
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Southern Delaware


« Reply #10 on: December 07, 2011, 01:50:47 PM »

More mainsteam? Non ethanol gas has not been available in my state for 3 or 4 years.
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Farther
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Quimper Peninsula, WA


« Reply #11 on: December 08, 2011, 05:14:54 PM »

As ethanol enriched gasoline becomes more mainstream...
Ethanol fuels have been on the US market since the late '70s.  You need to get out more often. ???
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Thanks,
~Farther
RDROGUE #0128
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Cumming, Ga.


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« Reply #12 on: December 08, 2011, 05:41:30 PM »

Can still find non-ethanol gasoline check it out
http://pure-gas.org/index.jsp?stateprov
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John U.
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Southern Delaware


« Reply #13 on: December 08, 2011, 09:24:48 PM »

I've seen that site. Find me a station in Delaware that sells non-ethanol fuel.  ???
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