# Is our Ford Explorer a goner?

**URL:** <https://community.cartalk.com/t/is-our-ford-explorer-a-goner/59072>\
**Category:** Maintenance/Repairs\
**Tags:** explorer, valves, ford, misfire\
**Created:** [December 23, 2010, 2:56am UTC](https://community.cartalk.com/t/is-our-ford-explorer-a-goner/59072 "2010-12-23T02:56:33Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![ok4450](https://avatars.discourse-cdn.com/v4/letter/o/e9bcb4/32.png) [@ok4450](https://community.cartalk.com/u/ok4450)\
**Post date:** [December 24, 2010, 3:17am UTC](https://community.cartalk.com/t/is-our-ford-explorer-a-goner/59072/21 "2010-12-24T03:17:35Z")

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This vehicle could have 2 separate problems and to be honest I don’t really know what to recommend as it’s difficult to determine what the shop has done as far as any diagnosis and how they arrived at their conclusion it’s a sticking valve.

The odds of it being a sticking valve is right around zero in my opinion and if they added a cleaner through the intake manifold in an attempt to cure a problem like this then it’s a very misguided attempt.

An off the cuff wild guess about the bucking above 45 MPH might be a clogged fuel filter.  
The 300 code is a random misfire and could point to a crank sensor or even a chronic misfire due to a clogged fuel filter.  
The cylinder 2 misfire, assuming spark plug and wire is good, may be related to an injector fault IF the compression on that cylinder is even half decent.

I see no reason to perform a leakdown test, which is essentially a more high tech and thorough version of a compression test.  
A simple compression test will reveal what needs to be known in this case.

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