火箭三R中气缸压缩为零。有人知道原因吗?

Based on what he just shared about the exhaust valve having no clearance, the valve isn't closing even with the decompressor deactivated. He stated he cannot insert a feeler gauge. For whatever reason, the valve needs to be adjusted...

I wonder what the other exhaust valve measurements are? Are they all tight??? Did someone try adjusting the valves before??
The pressure reducing valve is not adjustable. As long as it moves freely, there should be no problem.
 
We're trying to help you, really we are. The more information you give us the better we can do. There are things I still would like to know (scroll up). For one, why did you ask me about "repairing" the timing chain? You never answered. Things like that without any other other information are really frustrating and you're starting to pick up on that from other members, as well, who are also trying to help you.
You seemed have come to a Eureka moment when you discovered you had to move the decompressors around to get the valves to close for an accurate reading- I told you that several posts earlier (see newly emphasized text). Please take a breath and absorb the collective knowledge.
If I were still giving advice, that I thought might be taken, I would suggest you rotate the valves around another rotation and see if that valve is still tight. If so, you need to change shims. I gave you a link detailing that process on the 2.5 Rockets along with the link to the manual in resources. You don't reply to such things. That's not a translation issue and, yes, you are welcome here and we are glad to have you join us, but it's a two way interaction....
I wonder about things like.... did you buy this bike in this condition, or are you the original owner and after 20K miles of riding woke up one morning with this issue? This kind of thing would be good to know.
These bikes are built like tanks. There are very few, if any, instances of major engine failure I've heard of other than people like @Kevin frazier who are running heavily modified bikes and are pushing the $hite out of them to their outer limits. Is that you?
 
Today I used a feeler gauge to measure the clearance of each valve and got the following data.The valve clearance of the middle one with air leakage is 0
IMG_7834.jpeg
 
We're trying to help you, really we are. The more information you give us the better we can do. There are things I still would like to know (scroll up). For one, why did you ask me about "repairing" the timing chain? You never answered. Things like that without any other other information are really frustrating and you're starting to pick up on that from other members, as well, who are also trying to help you.
You seemed have come to a Eureka moment when you discovered you had to move the decompressors around to get the valves to close for an accurate reading- I told you that several posts earlier (see newly emphasized text). Please take a breath and absorb the collective knowledge.
If I were still giving advice, that I thought might be taken, I would suggest you rotate the valves around another rotation and see if that valve is still tight. If so, you need to change shims. I gave you a link detailing that process on the 2.5 Rockets along with the link to the manual in resources. You don't reply to such things. That's not a translation issue and, yes, you are welcome here and we are glad to have you join us, but it's a two way interaction....
I wonder about things like.... did you buy this bike in this condition, or are you the original owner and after 20K miles of riding woke up one morning with this issue? This kind of thing would be good to know.
These bikes are built like tanks. There are very few, if any, instances of major engine failure I've heard of other than people like @Kevin frazier who are running heavily modified bikes and are pushing the $hite out of them to their outer limits. Is that you?
Adjusting valve clearance requires removing the camshaft. The subsequent timing chain adjustment is the critical step. I'm not familiar with timing chain adjustment on multi-cylinder vehicles, so I'm asking for your advice. I repeatedly cranked the crankshaft to inspect the pressure relief valve, and it only stuck at the valve stop. The rest of the valves moved freely. I bought this car at an online auction, and it already had this issue. I'm not very familiar with this forum, and sometimes after replying, I can't find the page I left. I also think Google Translate isn't very accurate, and some words don't translate accurately. Please forgive me if I'm offended.
 
I also think Google Translate isn't very accurate, and some words don't translate accurately. Please forgive me if I'm offended.
And I think that is a great example. I'm sure he meant offensive, not offended.

You guys are doing a great job helping a new member. That's what makes this forum so great, help is always here. Things like Google Translate may not be perfect, but it sure make it a lot easier than it would have been 10 years ago. Stick with him, hopefully he gets things sorted soon.
 
Adjusting valve clearance requires removing the camshaft. The subsequent timing chain adjustment is the critical step. I'm not familiar with timing chain adjustment on multi-cylinder vehicles, so I'm asking for your advice. I repeatedly cranked the crankshaft to inspect the pressure relief valve, and it only stuck at the valve stop. The rest of the valves moved freely. I bought this car at an online auction, and it already had this issue. I'm not very familiar with this forum, and sometimes after replying, I can't find the page I left. I also think Google Translate isn't very accurate, and some words don't translate accurately. Please forgive me if I'm offended.
you can use chat gpt for translation, its way better than google translate and far more accurate ;)
 
Adjusting valve clearance requires removing the camshaft. The subsequent timing chain adjustment is the critical step. I'm not familiar with timing chain adjustment on multi-cylinder vehicles, so I'm asking for your advice. I repeatedly cranked the crankshaft to inspect the pressure relief valve, and it only stuck at the valve stop. The rest of the valves moved freely. I bought this car at an online auction, and it already had this issue. I'm not very familiar with this forum, and sometimes after replying, I can't find the page I left. I also think Google Translate isn't very accurate, and some words don't translate accurately. Please forgive me if I'm offended.
We're good! No offense taken. We'll get through the translation issues. Thank you for telling us about the auction. That's the kind of thing we usually know about right from the start. I had a suspicion that might be the case- that you bought it in this condition. So, maybe not such an easy fix afterall, but we'll definitely lend you a hand.

Hopefully, you just need to replace a shim, but that is awfully tight, which doesn't sound good. Instructions for removing the camshaft, replacing shims, setting the timing, etc. is all in this link. When I first needed to do this I could not find any mention, text or video, on this process so I had to jump in. That's when I learned about the decompressors. By now there may be other sources you can find online, but not sure. I'm up for the 40K mile service and will probably do that sometime later this year. I'll probably create a more thorough version at that time. For now, you seem pretty handy and this and the manual should give you all the information you need, including the necessary tools. Start at the beginning and read through the entire post......
 
i am thinking that this bike has a decompression problem or the seat in the head has come loose and damaged the head letting the valve stem come up against the cam leaving zero clearance and not able to let the valve come up to seal the chamber.
 
Back
Top