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09 Rogue 0 compression in all cylinders

253 Views 4 Replies 2 Participants Last post by  Excalabear
As the title states that's what I have discovered so far with this engine and the fact when I turn the engine over it doesn't sound right I'm guessing because of the lack of compression and I believe this is the QR25DE Engine. So has anyone else run into this problem or have some info on what it might be or what to check next? Thanks in advance for any help


I wanted to add I will be doing a leak down test in the morning and will post pics and results. If it's the valves I will be pulling the head and i can record the entire process if anyone's interested. But I will still appreciate anyones input .
This is a pic of what it looks like exactly as far as I can tell. This is a pic I found on Google that matches mine exactly. I'll take a pic of mine tomorrow morning.
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Until '21 the QR25 was the only engine used in the Rogue, so it's definitely a QR25. Make sure it didn't inhale a melted cat, that will usually wipe out the rings on two or more cylinders and will often weld all the exhaust valves open. If that's the case, plan on a JY engine because that one will be toast. The QR25 is an interference engine, so while it's remotely possible to get zero compression from a jumped chain without having valve damage, it's unlikely, and not possible at all with a broken chain or camshaft.
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So basically the chain probably broke and damaged the valves? My best guess for the 0 compression is the chain broke while the valves were open maybe if I'm lucky the valves are ok.
That or it ate the cat. The list of things which can cause zero on all cylinders is pretty short. If you have a borescope or can rent one from the parts store, a quick look down the spark plug holes should tell you what's going on. If the valves are bent there will be dents in the piston crowns, and the debris and scoring from cat inhalation is always very obvious.
That or it ate the cat. The list of things which can cause zero on all cylinders is pretty short. If you have a borescope or can rent one from the parts store, a quick look down the spark plug holes should tell you what's going on. If the valves are bent there will be dents in the piston crowns, and the debris and scoring from cat inhalation is always very obvious.
Thanks I'm gonna break out the borescope and look inside the cylinder head. I'll be back with an update
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