JoeR Posted February 21, 2023 Share Posted February 21, 2023 I've got an E450 with 80k that has an interesting engine noise. If this was an LS engine I'd say it was a frozen lifter roller. It sounds pretty similar to a belt squeak. It's pretty audible with a stethoscope in the right exhaust manifold. Are cam/lifter problems common on these? Quote Link to comment Share on other sites More sharing options...
forddieseldoctor Posted February 21, 2023 Share Posted February 21, 2023 There is a tsb on some of them for cracked oil pump drive gear. That usually makes a knock or tick noise though. 1 Quote Link to comment Share on other sites More sharing options...
batmantech Posted February 24, 2023 Share Posted February 24, 2023 I just finished one last week. It had the exact same sound. The truck was a 2021 with over 100,000 miles 12 months old construction truck runs all the time. One camshaft lobe was worn pitted (looked like an old bearing) and the roller lifter did not spin right could get to spots where it would not turn. Customer said it just started. Replaced cam and lifters that fixed it. (A few were reported on hotline past reports.) 1 Quote Link to comment Share on other sites More sharing options...
batmantech Posted February 24, 2023 Share Posted February 24, 2023 1 Quote Link to comment Share on other sites More sharing options...
JoeR Posted February 25, 2023 Author Share Posted February 25, 2023 Thanks for the reply! That sure is what it sounds like. It's coming apart soon. Thankfully it's not me that's going to do it. Vans are miserable. Ambulances are even more miserable. Joe Quote Link to comment Share on other sites More sharing options...
JoeR Posted March 21, 2023 Author Share Posted March 21, 2023 I wanted to follow up with the final outcome. See the attached lifter pic. It needs a cam and lifter. Cylinder has a bit of a scuff in it, so customer is deciding if they want an engine instead. Joe 2 Quote Link to comment Share on other sites More sharing options...
JoeR Posted June 18, 2023 Author Share Posted June 18, 2023 Interestingly, last week I visited a fleet of ambulances that runs a fleet of units with this engine. They have maybe 200 in all. They see lots of idle time because they are stationed at various points around the County with crews in them. They said they've had about 30 cam/lifter failures just like this one. They had a few of them stacked on a bench. Joe Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted November 22, 2023 Share Posted November 22, 2023 Quote Link to comment Share on other sites More sharing options...
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