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#1
06-07-2005, 10:40 AM
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Broken Valve Spring ('91 300E)
Well I pulled into work yesterday (after a 40 mile drive) and the car lost power. Poped the hood and hear what sounded like a really bad lifter.
Got the car home, pulled the plugs and did a compression test. Everything was 170psi except #4 which was 0psi. Pull the valve cover and found that the exhaust spring broken. Why? Stuck hydrolic lifter? Anyone have a good procedure on how to change the spring? I'll probably change the spring, the cup, and the hydralic lifter. Anything else I should change. Anyone recommend a valve spring compressor that works on the M103 engine? Thanks. 
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