2003 Ranger 3.0 valve job
Hi guys. I finally let my 94 Ranger go, with over 400,00 miles on it. I got a 2003 Ranger XLT four door extended cab with the 3.0 flex fuel engine. Now, with 97,000 miles on the odometer the Check Engine light came on. Took it to my mechanic who checked it out. He said he got code P0301 which means cylinder #1 had a misfire. Then he did a Mode 6 test. He called it a live test. It showed misfires on 4,5 and 6. He then did a leak down test which showed 25% leakage at the exhaust valve in #4. Compression was only 40 pounds on that cylinder. He stopped there and told me I needed a valve job.
My concern is this. I have found Ford Technical Service Bulletin TSB 05-26-3 on the internet. It says that cylinder heads from 2004-2006 were made of too soft material. Ford made replacement heads for these trucks out of a harder material.
I called the local Ford service dept. but they said cylinder heads were no longer available and also that particular TSB did not come up when they punched in my VIN.
However, I am thinking that my truck has those defective heads anyway. My truck is one year older. Seems like it might have been one of the first to get the defective heads. I have always serviced it per factory recommendations. It shouldn't need a valve job already under normal circumstances.
I did find dealers on eBay who sell heads that they say will fit my year. Their part number is 6U7Z6049A.
Can anyone confirm that these are the heads I need for my year and model?
Did Ford use the same part number for both left and right?
Has anyone had any experience with these heads? I am thinking of ordering a pair and have my mechanic install them. Any advice would be welcome.