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Discussion Starter · #1 · (Edited)
I'm tired of reading conflicting answers. So here goes. I have a 05 V70R and it has some sort of engine issue. Its very rough at startup, has blown white smoke at startup and I've been getting mis-fire codes on cylinder 4. Plus I usually need to top up the coolant every morning.

I've replaced the spark plugs and coils and had the same issue. Went to a Volvo specialist shop and he said its basically 15 hrs to get to the block to actually check if its cracked or 20hrs to just replace the engine. So they said its probably best just to replace the engine. Then I've been speaking with the original owner and his mechanic thinks it isn't a cracked sleeve but probably a head gasket leak. As if it was a cracked sleeve, I would be overheating the engine and it would get worse the more I drive. And today I drove it for 45 mins on the highway and the engine temp never got past mid-way and drove ok. Lots of power and just nosy. But then I hear head gaskets never usually go on these. So its a cracked sleeve.

Sure I get a low coolant message, but that goes away. And when I go and open the coolant tank to top off because its empty. All the coolant just runs back in the tank once I open it and I'm low just a bit. So I top up and repeat. I have no leaks, no over-heating and when I get beyond 3k rpm, it moves and has passing power... Outside of being rough under 3k, the engine seems to be ok.

So do I just get a new engine, replace and go from there. Or could it be something else.. Thoughts?
 

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I had an issue with my 07 S60R losing coolant, but it never showed any drips or puddles under the car. I pressure tested the system and found that the reservoir cap was faulty, which was a cheap fix. Then, I thought to myself, the whole system is 12 years old and it would be a good idea to replace the hoses and tank at a minimum. During that job, I discovered a small leak in my radiator. So I added that to the list. After replacing pretty much the entire cooling system (I did the thermostat housing too, because why not), I haven't lost any more coolant and the temp gauge doesn't cross the middle line.

My point is this: start with troubleshooting the smaller issues until you find evidence that it's a bigger issue. Yours does sound like it might be a bigger issue, but if you pressure test your cooling system you will likely find where it's leaking, and then you can make a better informed decision.


By the way, your mechanic blindly suggesting an engine replacement because of a 5 hour labor difference (you didn't mention that they did any troubleshooting) is just lazy & trying to make more money off you. I would find another mechanic and get a second opinion, but that's just me. Good luck with this, I hope you get it sorted out.
 

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White smoke on startup is usually an indicator of a possible head going

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Hate to to be the bearer of bad news but it sounds like the notorious cylinder crack the R blocks are prone to.


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White smoke and coolant loss? You're burning it, guaranteed. Cracked block almost certainly with these, only way to be sure is to tear it down.
 

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You'll never know until you pull the head.

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Yes you can. You can borescope the engine... or not even bother because it needs a new engine.
 

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I am having pretty much the exact same symptoms with my 04 V70R. I have also been told the exact same by a mechanic after 15-20 minutes of talking. My car absolutely drinks coolant, the reservoir is so pressurized that I have to bleed the system of air almost every time I drive it, and power cuts out in 4th gear around 4,000 RPMs. I’m trying to figure out if I definitely have a cracked cylinder sleeve or not before I go and replace my bottom end.
 

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I am having pretty much the exact same symptoms with my 04 V70R. I have also been told the exact same by a mechanic after 15-20 minutes of talking. My car absolutely drinks coolant, the reservoir is so pressurized that I have to bleed the system of air almost every time I drive it, and power cuts out in 4th gear around 4,000 RPMs. I’m trying to figure out if I definitely have a cracked cylinder sleeve or not before I go and replace my bottom end.
The original poster of this thread had to have his engine replaced. Sounds like you have the dreaded cracked sleeve and need the same.
 

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So whats the deal with the combustion gas testers that you stick on the coolant reservoir? I tested my car with one for about fifteen minutes with no signs of fluid color change, so I was put at ease a bit. But I still see the same classic symptoms of a cracked sleeve (gradual loss of coolant, bubbles back into the tank when I take the cap off). Luckily I have no misfires or anything.
 

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yeah same I actually have to top off on coolant every ~600 miles or so, and resevior is a little pressurized rising up a few cm after taking the cap off even after letting it sit overnight.

however I also don't have misfires on startup regularly. It's had this problem for 10k miles and 16 months of daily driving so I suspect a small hairline fracture that for the time being is under control and somewhat harmless

crazy how common of an issue it is with these cars :/
 
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