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Post by apothecary on Nov 16, 2011 9:46:09 GMT -6
Ok just went out to try the things mentioned. Carb is unable to be adjusted at all. It's got a fixed needle. I undid the exhaust and realigned it. Tightened the bolts as you said a little on each side 91/4 turn increments). Still loud as can be so it's the exhausts sound not a leak. I haven't warmed it up and seen if there's a difference riding yet (mostly due to having the front partially disassembled while waiting for parts).
I've taken a new video. I'll post the link as soon as I get it uploaded.
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Post by JR on Nov 16, 2011 10:28:34 GMT -6
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Post by apothecary on Nov 16, 2011 11:43:13 GMT -6
Ok, this was after I redid the exhaust but before I checked my valve lash and found my spark plug was incredibly loose (I MAY have forgotten to tighten it when putting everything back together). I did the spraying the vac lines with ether as you'd suggested and I find that the engine picks up speed when I spray the little round piece closes to the engine on top of the carb. I'm not sure if it's the intake itself that's sucking it in or if it's the gasket on the intake, or the vacuum piece on top of the carb towards the back (close to the engine). I have a new intake manifold gasket. I may go ahead and pull the intake off and replace the gasket just to be sure it isn't the problem. I won't be able to today since it's about to rain but that's the current plan.
Also when I redid the valves and tightened the spark plug, it seemed to not pop as much coming down from full throttle but that may have been because it wasn't fully warmed up. Will give it some more testing tomorrow.
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Post by apothecary on Nov 16, 2011 11:48:30 GMT -6
JR,
If you watch the first video I think I got a shot of the exhaust system in there somewhere. I have an aftermarket exhaust that uses only 1 gasket and that's the one from the head to the exhaust. I don't have the one that goes around the pipe that the muffler slides over. I have an entirely different style exhaust.
As for the intake, it seems that very well may be part of my issue and I'll be changing that gasket tomorrow.
I don't know if I have a weird carb or what. I did pull the needle out and there is NO adjusting it at all. It has an end cap that is not adjustable so I'm stuck with it as is until I get some small washers BUT with the possibility of it being the intake gasket, I think I'll worry about the needle after fixing that issue and trying it again.
Also mine is BEYOND being cold natured. Even letting it warm up for 3-4 minutes it STILL stutters and stumbles when you try to give it throttle. Give it gas slowly and it dies, crank the throttle wide open and it revs up and down until it's fully warmed up and running at temperature.
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Post by alleyoop on Nov 16, 2011 12:37:41 GMT -6
WOW!! now that is 100% improvement from the first VIDEO. So the main aor leak was the SPARK plug was loose. Yes that certainly would make it loose so much compression to cause it not take any throttle. Got to remember that to also check the spark plug for air leaks.
Well it sure is sounding good now and it takes throttle. To find the Leak take a Spray bottle of water and as it is idleing Spray individual parts and area and listen for the IDLE to change.
Alleyoop
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Post by JR on Nov 16, 2011 12:53:23 GMT -6
Nice going and knowing me I was asleep and missed the muffler but as you mentioned check the o-ring gasket on that manifold! You're making progress!
JR
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Post by apothecary on Nov 16, 2011 12:58:23 GMT -6
Slowly but surely I'm getting somewhere.
Something I noticed though, when I had the spark plug out, I turned the engine over to feel for compression. With my finger over the hole, it actually was sucking my finger into the cylinder. Is this normal? Now I think I did this before I adjusted the valves again, but I had adjusted them once and didn't think it should be doing that. Maybe I'm wrong... Wouldn't be a first. I've just never had a cylinder suck my finger in.
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Post by alleyoop on Nov 16, 2011 13:39:24 GMT -6
That is Normal, which is good by the way, that means it has good suction. It needs suction to draw air and fuel in when the Intake valve opens and feeds the BEAST.
On the Down Stroke after the Exhaust Stroke it SUCKS to get the next batch of air and fuel then on the Compression Stroke it should push your finger out.
Alleyoop
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Post by apothecary on Nov 16, 2011 15:41:00 GMT -6
Ok just making sure. I thought it was normal but hadn't ever actually used a finger to test like that so wasn't sure if it was or not.
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Post by apothecary on Nov 16, 2011 18:11:00 GMT -6
All right, just replaced the intake manifold gasket. Temporarily since I used a Mitsubishi truck gasket to do the job (the auto parts store didn't have the O Ring). Not the problem.
Looks like my issue lies with the little flying saucer looking bit at the back of the carb (engine side). Looking at the service manual, it's the air cutoff valve. I'll try replacing the lines to and from it as well as the o ring inside otherwise not sure where to source one of those suckers.
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Post by alleyoop on Nov 16, 2011 19:23:35 GMT -6
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Post by apothecary on Nov 16, 2011 20:58:39 GMT -6
GOOD GOD! For the prices those rebuilds are, I can replace the whole carb!
I'm going to start small though. I'll pick up about 3' of the vac line and start replacing old rubber make sure it's not giving me the issue. Then I'll pull the air cutoff valve apart see if it's clogged, torn, or leaking.
I may buy a new carb and just swap the air cutoff (just to keep as much of it original Honda as I can).
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Post by alleyoop on Nov 16, 2011 23:52:51 GMT -6
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Post by apothecary on Nov 17, 2011 15:11:53 GMT -6
All right replaced some of the lines (ones in the vacinity of the carb) it's GOt to be that gasket/intake. I'll have to wait till the new gaskets get in then I'll know for sure. I've also ordered a new intake just to be safe.
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Post by apothecary on Nov 21, 2011 13:17:03 GMT -6
Ok update.
Replaced the intake manifold gasket (ordered 5 just in case). That seems to fix the hard start as well as most of the popping so far. I haven't taken her out on the road yet since I've changed the gasket to a proper one but I have taken her for quick little zips in the parking lot at my apartment.
She's still hesitating on takeoff. I also noticed on the center stand, if given full throttle, she'll get up to what sounds like full speed then drop down then come up and drop down etc.
I'll go out tomorrow (maybe later today depending what the weather does) and take another video of it so you can hear the up and down. I think it's still got a little bit of a POP when it comes down from throttle at the very end when it hits idle. But it's just a single pop now not nearly as loud as it was prior to changing the gasket.
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..BAD TO THE BONE..