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Old Yesterday, 02:14 AM   #1
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Help!!!! Cam phaser?

Alright so as everyone can see I'm a newb on this forum but I'm far from inexperienced in the automotive world. I bought a 02 SVT Focus it was a basket case, car slipped the timing belt and tore up the top end. It was half ass torn down and was a mess. I finished ripping it apart had my machinist rework the head. Did all the normal timing components and top end rebuild. Fired it up and it has a slight surging idle almost like aftermarket cams. First thought was vacuum leak. Checked all vacuum connections and they were good. No CEL, no stored codes. Started cleaning sensors and testing and I'm all good. Off idle this car is a runner smooth as silk all the way through the rpm range. After trying to diagnose the idle and several hours of idle time I noticed a oil leak. The leak was from the intake camshaft seal while looking for the leak I removed the cam phaser plug and there was very little oil in the phaser. All the other focus' s and zx2 with a cam phaser oil slowly runs out with the plug out. Question 1) Will the cam phaser cause a weird idle, even though timing is spot on when I check it with tools? Question 2) Will the camshaft seal not being installed properly block a oil passage of the cam phaser or possibly keep it from building enough pressure to fill the phaser? I really need to get this thing back on the road. Help me out guys!!! I have read and researched with no avail!!!


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Old Yesterday, 01:22 PM   #2
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If you didn't use SVT cam seals, then yes the seal can block the oil passage some.
The SVT intake cam seal is larger than the exhaust side. It should fit just like the exhaust, after the drainback, near the outside of the journal.
But I don't think lack of pressure would have any effect on idle. Lack of pressure at RPM would prevent the cam from advancing and you'd notice a lack of power. At idle there is no pressure on the phaser.
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Old Yesterday, 01:38 PM   #3
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I understand that there's not really pressure on the phaser at idle. I guess what I am questioning is the amount of oil I should see when removing the blanking plug. There wasn't even enough for it to drip when I removed the plug. The other ztech engines that I have worked on had a pretty significant amount of oil in them
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Old Yesterday, 01:42 PM   #4
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Also if the phaser or solenoid is malfunctioning in some way will I try to adjust the timing at idle? I know it does under load but what about at idle? Is it possible for it to be advancing or retarding timing just at idle?
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