what is up with my compression going down

1995 NISSAN MAXIMA
232,000 MILES
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RON HUGHES
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any relation on changing fuel injectors and then 3 days later the compression is like 35 on one of the cyl. that was changed #5 fuel injector went bad, so the mechanic put in new injectors on 1,3&5, the car ran fine after that for 3 days (100 miles) but once again started misfiring bad ,but will stop misfire after warm up as long as you maintain 2000 rpm or better . The mechanic has checked it and has told me that the number 3 cyl. now has only like 35 lbs of compression ,,,is there any mistakes that he could of made that would cause this ,wrong type injectors possible or is it a bad luck deal on my part.the #5injector was diagnosed as being bad by 2 different mechanics at different shops
Dec 16, 2011 at 12:12 AM
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HMAC300
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It sounds like something dropped down into the combustion chamber and now it stuck in one of the valves, you will need to remove the cylinder head to see what's going on.
Dec 16, 2011 at 12:21 AM