火箭三R中气缸压缩为零。有人知道原因吗？

TURBO200R4 said:

what ever you do don't worry abut the decompression system. lol
he said "However, when I open the throttle, it stalls."
to me this means it has a big vacuum leak in the hoses or a bad map.
what i have seen on burnt valve or a worn down cam lobe that it works bad at idle then when when revving it does not fall flat on its face. mostly just reduced power.

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JAPANユーザー said:

I spent a lot of effort removing the outer casing today. I wish my fingers were as thin as chopsticks; the space is **** tight. I measured the valve clearance on the leaky side and it's 0.58. The pressure reducing valve moves freely without any sticking. https://youtube.com/shorts/jn3cxFeRvVc?si=y5Tw5lzBl88Lafkx

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stingray said:

Could it be a bent valve?

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JAPANユーザー said:

It's impossible to tell if the valve is bent. The only inference is that the valve can't fully return to its original position because there's no clearance. I need to remove the crankshaft so the valve is free of obstruction. If the valve isn't bent, it should close completely after removing the crankshaft.

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TURBO200R4 said:

i bet this thread reaches 100 posts before the problem is solved.

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rick danger said:

And he finds the problem and disappears without sharing the outcome. Ha Ha. Hope not. That's how we learn

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JAPANユーザー said:

I think I made a mistake in the measurement. I measured the clearance when the pressure reducing valve was working. This caused the valve to have clearance. That's why I measured 0.58. If I open the pressure reducing valve and put it in a non-working state, I try to insert a ruler with a thickness of 0.02. It can't be inserted. Because there is no clearance, the valve cannot be fully reset, leaving it in a leaking state.

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