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Old 06-07-2012, 09:08 PM
sawz5 sawz5 is offline
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99 2.5 problems

i bought this 99 ranger supposedly in good running condition, BUT you all know what's coming right. i had my nieghbor put his scanner on and he says it may have a broken or weak valve spring on no.2 cyl. now since he is remodeling his son's house he don't have time. so i need help from some of you guys. i need step by step how to change a valve spring in an overhead cam engine. thanks, rick
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Old 06-07-2012, 10:32 PM
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How did the "scanner" tell you that it's a valve spring problem.
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Old 06-09-2012, 06:04 AM
sawz5 sawz5 is offline
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i guess i should have said his scanner showed a misfire on no.2 cyl. then he said it might be a weak or broken spring.
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Old 06-09-2012, 01:07 PM
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A misfire can be caused by many things, such as a bad plug/plug wire, coil problem, or fuel injector issue. Even a small vacuum leak can cause a single cyl to have a misfire.
Yes, a weak or broken valve spring can cause this, but check the external stuff first. Especially if the misfire is intermittent.
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Old 07-03-2012, 10:01 PM
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thanks Mr. Rogue, apperantly a broken or weak valve spring can be fixed by changing to
a lighter weight oil. i put 10w40 in when i changed the oil my mech. found a thech paper from ford saying use 5w20 because heavier oil stayed in the lifters causing them to hold th valve open. i changed to 5w20 and so far the engine is running ok, so i guess i'll wait to see the outcome.

Last edited by sawz5; 07-03-2012 at 10:04 PM. Reason: left out some info
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Old 07-03-2012, 10:01 PM
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Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Other Ford Engines > 4 Cylinder Engines

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