S60 low compression
Discussion
Unfortunately it seems our 2006 S60 2.0T (petrol) has low compression on cylinder 5, fine on all the others. TBH I couldn't tell by driving it, it seems fine, garage said much the same and as it's a 5-cylinder it's smooth and drives just fine, it could have been this way for ages. Cylinder 5 is at 30psi , the others are at 120. They suggested running some top-end cleaner through it as a first step in case it's a coked up valve or stuck ring or similar, before going for anything more drastic, so I've ordered a bottle of Forte Top End Cleaner.
Are there any common reasons on this model for low compression just on one cylinder?
Book time for removing and replacing the head is apparently 10.5hrs , so if it comes to that then I will be dismantling it myself to have a look at its innards as the car's not worth that much - are there any sticking points I am likely to encounter? I've got a pretty full toolkit , built a Zetec kit car, rebuilt and replaced engines in mk1 MX5s , Toyota Hilux , Zetec etc.. , but never worked on a new(ish) FWD vehicle.
Are there any common reasons on this model for low compression just on one cylinder?
Book time for removing and replacing the head is apparently 10.5hrs , so if it comes to that then I will be dismantling it myself to have a look at its innards as the car's not worth that much - are there any sticking points I am likely to encounter? I've got a pretty full toolkit , built a Zetec kit car, rebuilt and replaced engines in mk1 MX5s , Toyota Hilux , Zetec etc.. , but never worked on a new(ish) FWD vehicle.
Edited by anonymous-user on Friday 24th June 20:22
Nope - they are very easy to work on - Just make sure you torque up the head bolts in the right sequence as you Would with any other car - be a little wary of the VVT systems on the cams and obviously make sure you time it up right when you put it back together - I'd recommend a genuine or Payen headgasket set rather than cheapo
OK thats good, thanks.
Re. the timing - will I require any special tools / make anything to lock the crank/flywheel to remove the crank pulley and to reset the timing? For my MX5 I have an ali shape that bolts to the crank pulley and the crankcase to hold it stationary, and the camshafts have nice clear timing marks on them, and the crank pulley is keyed making it all very easy to set. What's it like on the S60 engine?
Re. the timing - will I require any special tools / make anything to lock the crank/flywheel to remove the crank pulley and to reset the timing? For my MX5 I have an ali shape that bolts to the crank pulley and the crankcase to hold it stationary, and the camshafts have nice clear timing marks on them, and the crank pulley is keyed making it all very easy to set. What's it like on the S60 engine?
JimSuperSix said:
OK thats good, thanks.
Re. the timing - will I require any special tools / make anything to lock the crank/flywheel to remove the crank pulley and to reset the timing? For my MX5 I have an ali shape that bolts to the crank pulley and the crankcase to hold it stationary, and the camshafts have nice clear timing marks on them, and the crank pulley is keyed making it all very easy to set. What's it like on the S60 engine?
Cams, crank are all marked up so its pretty easy Re. the timing - will I require any special tools / make anything to lock the crank/flywheel to remove the crank pulley and to reset the timing? For my MX5 I have an ali shape that bolts to the crank pulley and the crankcase to hold it stationary, and the camshafts have nice clear timing marks on them, and the crank pulley is keyed making it all very easy to set. What's it like on the S60 engine?
2006 will be a twin vvt so yes you want the tools/make them. If you don't use them you'll get the camshaft out of range error on the 2nd start.
It is a pretty easy job though. I bought one of my s60's that had been roasted no comp on 3. Took a heavy skim to flatten it out.
Done 30k in it since.
It is a pretty easy job though. I bought one of my s60's that had been roasted no comp on 3. Took a heavy skim to flatten it out.
Done 30k in it since.
OK thanks I've just watched this video:
https://www.youtube.com/watch?v=o4uLvH151-c
and I see the need to lock the camshafts on the rear of the engine, but how do you mean by rotate to reset the VVT pulley? From what I can see in the video he just rotates them to the max position using a torx bit in a socket / spanner as he fits the belt back on?
https://www.youtube.com/watch?v=o4uLvH151-c
and I see the need to lock the camshafts on the rear of the engine, but how do you mean by rotate to reset the VVT pulley? From what I can see in the video he just rotates them to the max position using a torx bit in a socket / spanner as he fits the belt back on?
Edited by anonymous-user on Saturday 2nd July 20:09
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