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s60 2.4t 2002, change head valves and not start

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Old Oct 20, 2021 | 08:08 AM
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Default s60 2.4t 2002, change head valves and not start

hi forum i buy a s60 2002 2.4T, that broken the timing belt, the car start but make a noise like a train, i change the valves, but when like syncro the timing marks i cant.
put the lock tool in the rear of camshaft but the pulley marks not line up. i dont know if the last owner loosen the cams pulley.
the car now wont start


 
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Old Oct 20, 2021 | 10:21 AM
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Originally Posted by sebas60
s60 2002 2.4T, that broken the timing belt, i change the valves, but when like syncro the timing marks i cant.
You can loosen the cam gears to align the timing belt correctly - looks like it's one tooth off on the intake side - can't really see the exhaust - but we don't know where the crank is - no picture of that.

How did you adjust the new valves?

Do you have compression?
 
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Old Oct 20, 2021 | 10:43 AM
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Originally Posted by hoonk
You can loosen the cam gears to align the timing belt correctly - looks like it's one tooth off on the intake side - can't really see the exhaust - but we don't know where the crank is - no picture of that.

How did you adjust the new valves?

Do you have compression?
I don't adjust the valves and don't have pressure test.
​​​​​​

Crankshaft

Exhaust cam

Inlet cam (i loosen the 3 bolts)
 
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Old Oct 20, 2021 | 11:31 AM
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If you had bent valves and simply replaced them - they needed to be adjusted. Cam followers/lifters are different thicknesses to set the clearance. It's very difficult to measure/set them with the head on the car - but you do have the early cam cover with the 20 "set screws". Those are removed to be able to measure the valve clearance if any, and calculate the correct clearance needed. Then you have to take the cam cover off, remove cams and replace the followers with the correct thickness ones. Much easier to do with the head off the car. My local machine shop set the clearance during a valve job by grinding the stem of the valve if needed rather than buying new lifters. (springs not installed, special tool to hold the cams in place, and measure easily) .

I would set the cam timing and if it still does not start - check the compression.
 
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Old Oct 20, 2021 | 12:50 PM
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Originally Posted by hoonk
If you had bent valves and simply replaced them - they needed to be adjusted. Cam followers/lifters are different thicknesses to set the clearance. It's very difficult to measure/set them with the head on the car - but you do have the early cam cover with the 20 "set screws". Those are removed to be able to measure the valve clearance if any, and calculate the correct clearance needed. Then you have to take the cam cover off, remove cams and replace the followers with the correct thickness ones. Much easier to do with the head off the car. My local machine shop set the clearance during a valve job by grinding the stem of the valve if needed rather than buying new lifters. (springs not installed, special tool to hold the cams in place, and measure easily) .

I would set the cam timing and if it still does not start - check the compression.
I set timing again, but won't start again... Okey but i check the injectors and not injected, have fuel in the rail.
In the lcd don't show engine codes
 
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Old Oct 20, 2021 | 01:05 PM
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Originally Posted by sebas60
In the lcd don't show engine codes
OBD codes can only be read with a scanner that plugs into the OBD port. They don't show up on any screen on any Volvo. iCarsoft is a popular brand of scan tool. What's the compression? Auto part stores here in the US have loaner tools - how about where you are? Or Amazon sells one for $21us





 
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Old Oct 20, 2021 | 01:23 PM
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Originally Posted by hoonk
OBD codes can only be read with a scanner that plugs into the OBD port. They don't show up on any screen on any Volvo. iCarsoft is a popular brand of scan tool. What's the compression? Auto part stores here in the US have loaner tools - how about where you are? Or Amazon sells one for $21us

Thanks for answer Man.
I think that codes shows in the litle screens, now know that need a obd2 Reader.
I'm from chile southamerica.
 
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Old Oct 23, 2021 | 07:43 PM
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i check the point again, and read the compression and have 25 psi, the car injected and have spark but late cut all and only crank.
i adjust valves but in others cars, in this i dont have idea
 
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Old Oct 23, 2021 | 08:04 PM
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Originally Posted by sebas60
read the compression and have 25 psi
A cylinder (gasoline) requires at least 100 psi to run - if you have 25 psi - it will never run -
Low compression is either the valves are not seated (they are are not closing due to adjustment) timed incorrectly, or the piston rings are not sealing. I would guess if you had bent valves, put new valves in, set the cam timing correctly and did not adjust the valves - the valves are not closing and sealing. Easiest method - you will have to remove the head, take the head all apart, secure the cams, measure the clearance and adjust appropriately, exactly grinding the tops of the valves stems to create the needed clearance. Once all the valves are sealing/closing/adjusted properly - put it back together again and try -
 
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Old Oct 23, 2021 | 08:10 PM
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The valves are adjusted with the tappets - The difficulty is measuring the clearance - the tappets are sold by thickness. Or you can grind the end of the valve stem (a little bit) to set the clearance. My machine shop grinds the tip of the valve stem to get the correct clearance after they cut the seats or replace valves if possible. - Using a cut up cam cover to hold the cams in, and all valve springs removed to easily measure, remove valve, grind stem, and repeat.





 
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Old Oct 23, 2021 | 08:27 PM
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Originally Posted by hoonk
A cylinder (gasoline) requires at least 100 psi to run - if you have 25 psi - it will never run -
Low compression is either the valves are not seated (they are are not closing due to adjustment) timed incorrectly, or the piston rings are not sealing. I would guess if you had bent valves, put new valves in, set the cam timing correctly and did not adjust the valves - the valves are not closing and sealing. Easiest method - you will have to remove the head, take the head all apart, secure the cams, measure the clearance and adjust appropriately, exactly grinding the tops of the valves stems to create the needed clearance. Once all the valves are sealing/closing/adjusted properly - put it back together again and try -
For adjust the valves exist a special tool???
I SEE the shims or tappes for the valves in other cars, but i don't know how read the clerance, what side have the clerance bottom???
I tried to install Volvo vida for search info but cant install
 
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Old Oct 23, 2021 | 09:00 PM
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Originally Posted by sebas60
For adjust the valves exist a special tool???
I SEE the shims or tappes for the valves in other cars, but i don't know how read the clerance, what side have the clerance bottom???
I tried to install Volvo vida for search info but cant install
Th

​​This is the special tool
 
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Old Oct 24, 2021 | 09:23 AM
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That homemade tool should work if it holds the cams down to be able to measure the clearance between the cam and the tappets. With the springs removed you can measure, slide a valve out, exactly grind the stem tip and test again
 
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Old Dec 1, 2021 | 06:17 PM
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I Buy the special tool for press the camshaft, and the tool for remove the valve cover. Today i check the valve clerance, and i can't check anything... The tappet don't have clerance with the camshaft.
The seller told me that the engine is b5244t, and i check the vin with a web decoder and says that is b5234t3 :/, i think that the valve is more high than others but have the same part number...
 
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Old Dec 1, 2021 | 08:09 PM
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Originally Posted by sebas60
Today i check the valve clerance, and i can't check anything... The tappet don't have clerance with the camshaft.
You will either have to take the head back off and grind the valve stems to get the correct clearance or find replacement tappets that are thin enough.
 
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