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by John E Davies » Sun Dec 06, 2020 12:05 pm
Older trucks are easy to work on. I keep my engine bays looking like yours. Maybe you should remind yourself to proactively change old worn parts before they fail....and it is certainly a very bad idea to continue driving it that way, the unburned fuel will screw up your O2 sensors, and carbon the cylinder heads.
Have you ever changed the timing belt? It should be done, along with the water pump and pulleys, every 90,000 or seven years. Your 3.4 liter engine is non-interference, meaning the valves will not be destroyed if it snaps, unlike the 4.7 V8, but it will still leave you stuck in the boonies and swearing non-stop.... or blocking traffic on a busy freeway. I just changed the belt on my daughter’s 2007 Outback XT, it only has 95,000 miles on it and the belt looked fine, but one of the pulley bearings was dry and rough and would have failed quite soon. Hers is an interference engine, so a failed belt means pulling the engine and rebuilding the top end at least, or an exchange engine. Timing belts are definitely “pay me now or pay me a lot more later”.
John Davies
Spokane WA
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