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Post by andr01dm on Aug 12, 2008 17:53:49 GMT -5
FATC (my bike) died on the way home from work today.. had to walk it the last mile or so. I'm not certain what the issue is, but I suspect it may have blown the head gasket. It still ran, badly, making horrible wet chugging sounds, and there was no power at all.
Fweee...
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Post by ruckdork on Aug 14, 2008 11:29:24 GMT -5
So, what's the story on your Ruckus?? Have you examined the damage yet? I hope it's just a gasket. peace
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Post by andr01dm on Aug 14, 2008 12:50:17 GMT -5
I haven't made time to deal with it yet. Maybe this evening...
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Post by andr01dm on Aug 14, 2008 19:17:46 GMT -5
Just went down into the parking garage and, after a few system checks, tried starting my bike. It runs! Strangely enough it runs. But it is leaking oil.. and I still don't know why it behaved so strangely the other day...
But at least it runs. ^_^
After that quick start and 1 min or so at idle I shut it down.. I'll get into fixing it this weekend.
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Post by Dandy Dan on Aug 15, 2008 15:45:02 GMT -5
Wow nice write-up....that's really fun that you used the clamp + pop can trick to compress the rings because that's exactly what I did too....I think I even used Diet Coke like you Regarding your current woes.....I suspect the problem likely relates to your jetting. Have you spend hours and hours rejetting your scoot yet? Normally people think of the big bore as the big job and the rejetting is a quick thing at the end but to get it rejetted properly so it runs well, gets good milage and idles nicely takes a while. I would say several hours at a minimum. That's really cool to see that you're from Toronto. You should definately participate in the Mad Bastard Rally next summer (it's every 2nd year). Last summer a friend of mine came in 2nd (out of 65 scoots) on his big bore Ruckus. Unfortunately my big bore Ruckus was totalled in an accident with a car 2 weeks before the rally so I had to ride my CBR125 as an unofficial entry. Also, you're total welcome to the come to the Go Go Boys 'Fall Classic Ride' up in Haliburton the weekend of September 12-14th. The 'Go Go Boys' started off as the 3 man team of myself, my brother and this Ruckus owner from Hamilton for the 2007 Mad Bastard Rally but since then quite a few more scooterists have joined so there's 5-10 of us now. We've got 3 Ruckus's (2005, 2006, 2009), an '86 Elite 80, '83 Yamaha Beluga (mine), '83 Honda NH80 Mascot and an '87 Elite 150. The 'Fall Classic' is a ride we did last fall with 4 of us at one of the guys cottage near Haliburton. He picked up our scoots in his pickup truck and we drove up and stayed at his cottage for the weekend. We had a blast scooting the backroads, watching scooter movies (Quadrephenia) and eating amazing food. Hopefully there will be 6-8 people this year.
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Post by andr01dm on Aug 17, 2008 11:32:16 GMT -5
Copy-pasta from TotalRuckus...
Actually, I suspect that I didn't blow the head gasket after all. While poking around the engine checking things over I found that the air supply hose for the diaphragm chamber had been pinched almost closed by the throttle cable.
When I remove the main air supply hose from the carb it was almost literally dripping gasoline, and this is 4-5 days after I had to walk it home. I suspect I may have just flooded it.
I'd only just begun the process of re-jetting when FATC died on me, so that certainly could also be part of the problem.
...
Meanwhile I have a small oil leak to find and fix, once that's done I'll try and carry on with rejetting and see how it performs.
*fingers crossed*
(ps: Dandy Dan: Thank you and I'll reply to your post in a bit.. just don't have time at the moment... Busy weekend! >.<; )
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Post by beatbop on Aug 27, 2008 4:48:51 GMT -5
Hey andr01dm,
What is happening with it, is everything running cool now?
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Post by andr01dm on Sept 3, 2008 22:37:51 GMT -5
After a fair bit of mucking around, trying to determine the exact problem, it looks like I have blown the head gasket. That's where I have a small oil leak and where there's oil I'm sure there must be a big enough gap for gasses to be blowing out of the cylinder.
I've ordered a new head gasket from Chanito and am going to pick up a few other bits and pieces, such as the helicoils that I should have used instead of drilling for larger bolts. I wouldn't have had the gasket issues if I'd used re-threading coils.
C'est la gurre.
Once that's done I have a few other issues to work out.. such as figuring out why my ECM refuses to reset. Shouldn't have taken the carb apart. Again, another problem that I created by trying to do too many things at once on my bike.
I love taking things apart to see how they tick. Hard part is getting them ticking again! >.<;
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Post by andr01dm on Sept 16, 2008 18:34:30 GMT -5
Quck update: My new head gasket arrived today (thank you Chanito!) and I've nearly finished the cleanup work on my engine. There was a lot of soot and glazing in the cylinder, on the cylinder head and on the valves. Especially the exhaust valve and pipes.
Nasty crud that built up as a result of burning oil and coolant that was seeping into the cylinder head. I'm a little shocked and a bit amazed with the engine's design that it actually ran quite well (at least when it was cold) under those conditions. Though it might have been better if it hadn't as I'd've spent less time with it running, trying to figure out what the problem could be.
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Post by andr01dm on Sept 21, 2008 16:18:03 GMT -5
I've gotten my bike working again. The new gasket seems to have done the trick.. though I've only made one test ride so far; with the headlights unplugged so I could charge the battery.
After dinner I'll check that there's no leaks, change the oil, and try resetting the ECM yet again. Then take it for another spin. If all's well I'll use it to commute tomorrow. ^_^
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Post by jedisabre7 on Sept 22, 2008 6:19:51 GMT -5
good work.
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Post by andr01dm on Oct 9, 2008 12:43:33 GMT -5
Disassembled my engine once more, as I've blown another head gasket. Thought I'd post photos of the soot and oil glaze that built up inside of the cylinder head and on the piston. This is from a week of commuting to work, it's about a 1+ hour ride each way, so about 12+ hours of riding time. Only a little of that at WOT (Wide Open Throttle) due to traffic and frequent stop lights. Two new head gaskets and a set of ARP bolts are on the way, hopefully they'll arrive before the long weekend. *fingers crossed*
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Post by thunderstRuck on Oct 9, 2008 14:17:52 GMT -5
Your plug is white.
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Post by andr01dm on Oct 9, 2008 16:15:00 GMT -5
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Post by Firegut on Oct 10, 2008 10:10:17 GMT -5
I think he's trying to say that you're running lean.
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Post by andr01dm on Oct 10, 2008 14:35:53 GMT -5
I think he's trying to say that you're running lean. Ah, okay. Thanks, and thank you ThunderstRuck. :) I've not been able to refine my jetting yet, what with the gasket blowing out over and over again. I wonder if the oil and coolant seeping into the cylinder might affect the plug's colour?
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Post by chanito on Oct 10, 2008 21:27:24 GMT -5
Over the weekend i have to make time to explain all we can from those pics, but anyway some tips, your head gasket is leaking just under the exhaust valve, you can tell by the trace of water vapor just between the valve and the head-gasket (coolant and hot combustion make a heck of a steam cleaner) The engine got SUPER HOT and you can tell by the way the gasket coating is all blister up, my guess is you had a lean running engine, making your exhaust getting red hot just under the head, i will suggest covering it with some heat wrap at least until you get the idle mixture adjusted and clip a coil from the carb spring
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Post by andr01dm on Oct 11, 2008 9:57:04 GMT -5
::) Over the weekend i have to make time to explain all we can from those pics, but anyway some tips, your head gasket is leaking just under the exhaust valve, you can tell by the trace of water vapor just between the valve and the head-gasket (coolant and hot combustion make a heck of a steam cleaner) The engine got SUPER HOT and you can tell by the way the gasket coating is all blister up, my guess is you had a lean running engine, making your exhaust getting red hot just under the head, i will suggest covering it with some heat wrap at least until you get the idle mixture adjusted and clip a coil from the carb spring ??? Thank you for these excellent observations and advice! ^_^ I'll increase my main jet before I bolt it all back together.. I sounds like it's safer for the engine if it's running a bit rich over too lean. The exhaust pipe was getting this odd beige colour to it right near where it attaches to the engine, which I guess is also a sign that it's running too lean.
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Post by jedisabre7 on Oct 15, 2008 16:23:16 GMT -5
what does clipping the spring coil do?
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Post by smartbomb on Oct 16, 2008 16:09:40 GMT -5
I would also check the head and deck for warpage. Chanito's head gasket is very thin, 0.010" and a single layer metal. Although this is wonderful for performance, this type of gasket does not tolerate any sort of warpage at all. The more you blow the headgasket and overheat it in the process, the more your deck gets warped. It probably is warped for sure now.
It may be within the service limits but Chanito's head gasket requires tighter than stock limits.
I would lap the deck and head so there is no more than 0.0003 out of trueness in it. That really is 3 tenthousands. lapping is beyond milling. A performance orieented machine shop can get it done.
If you are riding around with the stock jetting, that is asking for trouble as well.
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