Hi, I Can't Say I Have never Seen One Not Start But, It Is Possible, If Spark plug wells Have ALot Of Oil In Them. What Happens Here Is The Spark plug Wires Will Short Out In Time Cause Of Oil on Them. Or Car Will Also Run Rough, Or Miss. To Confirm This Twist very Carefully Each Spark Plug Wire Out Of ItS Well. Look Down Each Well To See If Oil Is There. Also Look At Spark Plug Boots As You put them out. If they are Full of oil, That Will cause Shorting To ground. If All Wells Have Oil In them, You Must Remove it, By Using a Air Nozzle And Lots Of rags DO NOT REMOVE THE SPARK PLUGS AT THIS TIME TILL ALL THE OIL IS REMOVED FROM THE WELLS. IT's A Messy Job So Wear Old Clothes. The Reason Oil Get In There Is Because Of The Valve Cover Well Gaskets Leaking, They Are Round Seals That come with the valve Cover. You Will See them After You Remove The valve cover. Take Note Of How The Seal is in the cover. They Can Be Removed With A Small Punch Or Old Screwdriver. After you put them Back In the Cover Put A light Coating Of Grease On The Part that Touches The well. Then Carefully Reinstall The valve Cover. If All The Spark Plug Wires Are Mushy Or Old From Oil Replace Them, Also The Spark Plugs. But do not Remove spark plugs Until All oil Is Cleared out. You Do not Want Anything Going Into The Cylinders.I Prefer To use The Honda gasket It Is better Quality, And The Well Seats
Hope This Helps You.
Sunday, July 18th, 2010 AT 2:15 PM