JAPANユーザー
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About 30,000 km, just normal driving. There is a link before starting the video.
Journeyman
"And this one is just right" ~ Goldilocks
That helps. I see the video now - last on your page of photos.
It's hard to tell anything definitive from cell phone audio, or maybe it's just my old ears. Doesn't sound right though.
The bike does run and idles (holds steady) properly.
Based on the p0068 code I'm guessing your throttle bodies are out of sync, linkage is sticky, and/or fuel filter issue.
When you did the compression test how did the plugs look?
Have you tried riding the bike? How does it perform?
You're coming up on the 20,000 mile service interval which includes replacing fuel and air filters, spark plugs, valve check, and timing and throttle body adjustments.
Did you or the dealer do the 10k mile service?
If you're able to pull the tank and do a compression test you can do the 20K service yourself.
A look at the 2.5 Innards - DIY 20K mile service, including valve clearance check and shim replacement
Part 1 This includes valve clearance check and shim replacement. Also air, fuel, spark plug and coolant replacement, and bleeding the clutch. This is a work in progress, so edits and further information to come... Get the service manual here...
www.r3owners.net
Kiwicol
Career Beer Taster
Just a side question for the OP, what's the small square box you've mounted near the clutch master cylinder? I also noticed you had the 3 keys on a key ring sitting on the seat, I hope you don't use the bike with the 3 keys together as Triumph says this could cause problems.
Jhortz
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- 2012 Rocket Roadster
I'm going to try and respond to a couple of posts here with this one so bear with me.
TURBO200R4 is right, compression tests are not evidence. They only tell you that there is a problem (if done correctly), a compression test alone doesn't tell you what the problem is.
The conditions of a compression test are not the same as a running engine, an engine that measures poor or no compression can still produce compression and power when running at speed. The engine can fire on two cylinders and the third will pick up enough to keep the engine turning over once it is running. I am really interested in what rocket would run like on two cylinders though
If you have found nothing with the bore scope you could try a leak test, basically you pressurize the cylinder with compressed air and listen to the escaping air. Air from the inlet means an inlet valve, exhaust mean exhaust valve, and from the crank breather is a piston/ring/bore issue. If you look on YouTube there should be plenty of instructional videos for a leak test, just make sure the cylinder is a BDC on compression or the engine will turn over (potentially backwards too, you don't want that).
The other thing i have seen a few times (not on a rocket though) is the throttle body being closed fully. If you form a near perfect seal on the throttle body you will get low compression results. It's a long shot but worth a quick look in my book.
Journeyman
"And this one is just right" ~ Goldilocks
All good points in general, but I would think that the decompressors on the new Rockets may defeat the leak test by holding the exhaust valves open when not runningI'm going to try and respond to a couple of posts here with this one so bear with me.
TURBO200R4 is right, compression tests are not evidence. They only tell you that there is a problem (if done correctly), a compression test alone doesn't tell you what the problem is.
The conditions of a compression test are not the same as a running engine, an engine that measures poor or no compression can still produce compression and power when running at speed. The engine can fire on two cylinders and the third will pick up enough to keep the engine turning over once it is running. I am really interested in what rocket would run like on two cylinders though
If you have found nothing with the bore scope you could try a leak test, basically you pressurize the cylinder with compressed air and listen to the escaping air. Air from the inlet means an inlet valve, exhaust mean exhaust valve, and from the crank breather is a piston/ring/bore issue. If you look on YouTube there should be plenty of instructional videos for a leak test, just make sure the cylinder is a BDC on compression or the engine will turn over (potentially backwards too, you don't want that).
The other thing i have seen a few times (not on a rocket though) is the throttle body being closed fully. If you form a near perfect seal on the throttle body you will get low compression results. It's a long shot but worth a quick look in my book.
Jhortz
.020 Over
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- Jan 2, 2024
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- 2012 Rocket Roadster
I know basically zero about this model of rocket, and even less specifically about the decompression system so I can't be much help on the specifics here. Diagnostic tests help identify exactly what the issue is, or at least begin eliminating other possibilities. Jumping straight to a suspected system or component can only tell you that it is or isn't that one part. When chasing possibilities it makes sense to do the easiest and most likely things first, but it also runs the risk of wasting time on dead ends due to hunches, and can potentially result in false negatives or positives which can further complicate issues. But take my advice as general advice, I don't know how hard it is to check and confirm that the decompression system is working correctly.
Journeyman
"And this one is just right" ~ Goldilocks
Your advice makes good sense. I see you have a Roadster, which I also did before the 3R, btw. You'd think the two would be very similar, and they are in many ways. But, I had to call on smarter folks here (credit to @Rocket Scientist) to understand why, when doing a valve check, the exhaust valves were so far out of spec. It turns out the de-compressors, which I was unfamiliar with, were to "blame."
I still don't think we have enough information to really help the OP, and given that it starts immediately and idles smoothly, I just don't think there's a compression issue, but something much more simple going on.
I'm about ready to step back until the OP provides a lot more information (and participation). I understand it's necessary to use Google translate, or something similar, but that is easy to do and doesn't limit how much information you can provide. For now....
Questions for the OP
When you did the compression test how did the plugs look?
Have you tried riding the bike? How does it perform? Is it fine at higher RPMs, for example?
Did you or the dealer do the 10k mile service? You're coming up on the 20,000 mile service interval which includes replacing fuel and air filters, spark plugs, valve check, and timing and throttle body adjustments.
TURBO200R4
stand up straight and grab the world by the a$$
what i would like to know is how do you disable the decompression system to do a valve check?
does the dealer do valve checks?
has anyone done a compression check on the newer rockets?
can these decompression parts go bad and cause a bad compression problem?
i would try to install the compression gauge on the #2 and pull the wire on (number 2 ) the other plug then start it to see how much compression it has.
does the dealer do valve checks?
has anyone done a compression check on the newer rockets?
can these decompression parts go bad and cause a bad compression problem?
i would try to install the compression gauge on the #2 and pull the wire on (number 2 ) the other plug then start it to see how much compression it has.
Journeyman
"And this one is just right" ~ Goldilocks
It turns out that measuring the valves is actually pretty easy - you just push the decompressors around and the valves settle into their true position.
JAPANユーザー
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That's Japan's Etc! A signal receiver used when passing through a toll booth on a highway.
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