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Old 08-21-2006, 09:12 AM   #1
Guerice
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AKA Drtywgn

Default Timing problem

Hi guys and gals

A month ago one of the idler pulley of the timing belt burnt both bearings. So i bent 2 valves on the drivers side head. I took the head of, changed the valves, put new gaskets on and retimed it.

But the book says 44,40.5 tooth should be the alignment. That didnt make sence since the lines on the head cams were both facing inwards about 15-20 degrees. I searched here, RS25, USMB and found that it was a mistake and it should be 47,43.5. Is that info correct? Because my car looks like it's running on 3 cylinders and sounds like it's missing a beat.

I do have a check engine light that i will check tonight, i suppose a missfire.

BTW i have a 99 2.2L SOHC impreza

Thanks for any help
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Last edited by Guerice; 08-21-2006 at 01:07 PM.
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Old 08-21-2006, 12:04 PM   #2
Storm
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If the timing mark on the sensor tooth of the crank pulley is lined up and the cam pulley timing marks are lined up, the motor should run. If they are not lined up, well....the motor probably will misfire like a sumbittch.... I never rely on counting the teeth on the belt as much as getting those marks lined up.

Jay Storm
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Old 08-21-2006, 01:07 PM   #3
Guerice
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I pulled the code and it's a P0302, cylinder 2 missfire.

I did line them up like the drawing but it wasnt running well at all while idling.
So i went with the tooth count instead. But i will retry with the marks.



If one cam is misaligned by only 1 or 2 teeths, will i bend some valves even if i did turn the engine by hand to make sure i'm not hitting anything.

And would that make the cylinder 2 and 4 missfire instead of only one?
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Old 08-21-2006, 02:14 PM   #4
Tim Sanderson
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disconnect negative batt.
pull plugs
Align the marks
install the belt
install tensioner with pin in
install idlers
double check marks
mark belt to match timing marks
pull tensioner pin
crank motor by hand clockwise one full turn
watch the tensioner extend and take up some slack
rotate motor counterclockwise one full turn and align sprocket timing marks with cover timing marks.
do they line up?
no? note how far off they are and udjust using marks you made on belt. Making new marks to compensate. re-compress tensioner and start over.

yes? should work.

A new oem timing belt will eliminate any guess work as they have all the marks on them.

I think what you did was forgot that the tensioner. Try again.
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Old 08-21-2006, 02:21 PM   #5
Guerice
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I did all of the above except i went 2 full turn clockwise instead of one each way.

I just bought a compression gauge, i'll try to test it tonight. Might be the valves breaking in and not closing fully. I'll check the valve clearence too.
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Old 08-21-2006, 06:54 PM   #6
Guerice
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Compression says 160 on the good head and 120 on the bad head.

Thats with a warm engine.
So is my timing off on the head that i changed the valves?
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Old 06-01-2007, 07:21 PM   #7
ac30treb
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I know I'm posting nearly a year later, but I'm having a similar problem with my '99 2.2l. Did you find a solution?
Thanks.
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Old 06-02-2007, 09:03 AM   #8
Charlie-III
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Quote:
Originally Posted by ac30treb View Post
I know I'm posting nearly a year later, but I'm having a similar problem with my '99 2.2l. Did you find a solution?
Thanks.
One thing I do when the engine is still in the car, I use a mirror to recheck the alignment marks (I have a DOHC) since this removes eyeball alignment errors. I have thought I was OK, but using the mirror I found I was off a tooth at times.
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