Login Register

Loud rattling in new-to-me car

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive P2 platform cars sold as model years 2001-2007 (North American market year designations).

2001 - 2007 V70
2001 - 2004 V70 XC (Cross Country)
2004 - 2007 XC70 (Cross Country)
2001 - 2009 S60
2003 - 2007 S60 R
2004 - 2007 V70 R

Post Reply
aefriot
Posts: 5
Joined: 8 March 2019
Year and Model: 2007 XC70 2.5t AWD
Location: POTSDAM,NY,USA

Loud rattling in new-to-me car

Post by aefriot »

NOTICE, for short version: Please go to paragraph 2 :) This paragraph give insight as to my purchase. My wife took on a new job out of the house and needed a vehicle. We decided on an AWD car. Subaru came to mind and I started looking. Well, I found a very nice looking and very clean 2007 XC70 Volvo with 183,000 miles. It is an online auction car. Bought with only as seen through the internet and a series of very lovely pictures showing how straight and clean the vehicle was. There was also a link to a vehicle report that showed 2 owners and no accidents. So far so good! The vehicle was a 6 hour drive from me and was out of the question to check out the running condition without knowing a possible final price. We took a chance and waited for the auction to see how much (or little) the vehicle would sell for. We can purchase running used engines within an hour from here for $650-800 with under 150,000 miles. New water pump, timing belt and incidentals brings the price up to $1,200 for a running replacement engine. How much time will it take me to replace the engine? I work a little slow so I figure 2 days of relaxing engine work to replace the engine. A transmission would be half this cost and the same time. So...the car has a trade-in value of $2,775 and retails for $5,725. I'm not a retail kind of guy so I'll use the trade-in value of $2,775. $2,775 - $1,200 - tires ($600) - 2 days labor (My wife says she isn't going to pay me) - transport costs ($200)= $775. If I can get this car for less than $775, I'll be golden! We bought the car for $700!

I had never started the car before purchasing it and was quite nervous as to what we would hear upon starting the engine. I turned the key and it appeared to turn much slower than our V8 truck. But it did start with a lot of noise and a rough idle. I turned the engine off after that sinking feeling that you get as you first understand the situation is not in your favor. I checked the oil and the coolant. Both are normal and of normal levels. I remove the spark plugs and find 4 of the 5 in good condition but the #4 cylinder had mechanical damage. I perform a compression test on all cylinders and 1,2,3,5 are 140-145 psi. #4 cylinder was at 0 psi. I stuck a stiff wire down to the top of the piston and had my wife turn the engine over. The piston went down! Whew! It's not a broken rod! Now, what would cause damage to a spark plug, make lots of noise and leave no compression in the cylinder? An out of synch camshaft would damage valves in all cylinders would it not? A broken valve spring would drop a valve to be hit by the piston. A head of one of the valves broke off. A loose valve keeper would allow a valve to drop into the cylinder to be hit by the piston. Nothing I can think of says I don't need to remove the head. Perhaps I'll just start simple and remove the valve/camshaft cover first to look for something amiss.

Any suggestions?

Thank you

Marcobrick
Posts: 333
Joined: 28 September 2010
Year and Model: 2003 V70T5
Location: Christchurch,New Zealand
Has thanked: 3 times
Been thanked: 1 time

Post by Marcobrick »

I seem to recall a story on the forum about a P2 car ingesting a ball bearing check valve from the pcv system also resulting in mechanical damage.
The Fleet:
2008 XC90 D5
2014 Nissan Leaf
1973 Fiat 125
1970 MGB GT
1973 Land Rover Series 3 flat deck.
Previously:
2003 V70T5
1996 850R sedan
1994 850T5 Sedan
1995 850 Turbo Wagon
1998 V70T5

Favourite line: "How hard can it be?"

User avatar
abscate
MVS Moderator
Posts: 35301
Joined: 17 February 2013
Year and Model: 99: V70s S70s,05 V70
Location: Port Jefferson Long Island NY
Has thanked: 1505 times
Been thanked: 3818 times

Post by abscate »

Get down to Utica and pick up a used engine for $500 from Erie VoVo

Stop in here for a coffee. If you find a place to work down here we have an engine cherry picker here too.

Figure two weekends to do a first Volvo engine swap.

You need to do a crashing cram on P2 Volvo. Most every module is married to your VIN number so be careful with those modules.
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread

aefriot
Posts: 5
Joined: 8 March 2019
Year and Model: 2007 XC70 2.5t AWD
Location: POTSDAM,NY,USA

Post by aefriot »

I'm in the process of tearing the head down now. I'm to the point where I need a cam locking tool. Off to make that now....

aefriot
Posts: 5
Joined: 8 March 2019
Year and Model: 2007 XC70 2.5t AWD
Location: POTSDAM,NY,USA

Post by aefriot »

Not good. I checked for bad clearances in the #4 cylinder. Brought #4 piston to the top and started it back down about an inch. Pushed down on the piston with a long screwdriver. It easily went down 5/16". Guess it's definitely going to have to be pulled from the vehicle.

I checked online at Erie Vo-vo for a crankshaft or an engine. No luck. I will call Monday to speak to a person to see if I can get a good engine at a good price. I know I can get one closer to me, but if I can save a money by traveling further or get an engine with fewer miles for the same money...I'm for that.

Pull the engine and check it for what kind of wear it has. I'm assuming the lower end of the connecting rod may have come loose and allowed it to raise up enough to whack a couple valves. I rented an inspection camera, but it's mirror was too large to enter the cylinder through the spark plug hole. A $30 inspection camera attached to my cell phone looks like a great option now.

User avatar
abscate
MVS Moderator
Posts: 35301
Joined: 17 February 2013
Year and Model: 99: V70s S70s,05 V70
Location: Port Jefferson Long Island NY
Has thanked: 1505 times
Been thanked: 3818 times

Post by abscate »

For a 2007 give Randy at Randall Volvo in Albany a call. I pass through your way on the way up to Montreal every month and could trailer it up on a trip if I can drop and retrieve my trailer on the way back.
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread

Post Reply
  • Similar Topics
    Replies
    Views
    Last post