Wont start
1990 Nissan Pathfinder

Wont start

(1990 Nissan Pathfinder)
my 90 pathfinder wont start the code it gives is a knock sensor i did a compression check and it only has 60 pounds all cylinders r about the same could it b the timing belt or jumped time
1 answer & 1 comment
Popular Answer
Very possible, 60psi is to low the engine won't start. You can do a wet compression test, add a once of oil to each cylinder. Note all new pressure readings, if you get a lot higher reading you have bad rings. Not much of a change, means you have problem in the heads. Could be valves do to timing or head gaskets. Next check your timing marks, if off replace the timing belt.
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on April 14, 2011
thank u for your time . i found the problem the timing gear on the crank shaft sheared the key
General Diagnosis
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Very possible, 60psi is to low the engine won't start. You can do a wet compression test, add a once of oil to each cylinder. Note all new pressure readings, if you get a lot higher reading you have bad rings. Not much of a change, means you have problem in the heads. Could be valves do to timing or head gaskets. Next check your timing marks, if off replace the timing belt.
Sign in to reply
on April 14, 2011
thank u for your time . i found the problem the timing gear on the crank shaft sheared the key

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