Apr 26, 2008 · The older generation of engines had weaker timing gears and chains as well as stronger valve springs which tended to streach the chains. Our more modern timing gears and chains …

Sep 10, 2013 · In my opinion the chains themselves could last more than 500K miles if the plastic guide assemblies didn't break or the tensioners didn't fail. That's when the chains may actually break.

Detailed diagram of the Ford 4.0 timing chain, including key components, their arrangement, and proper timing. Ideal for repair or maintenance tasks.

Jul 11, 2023 · Make sure to replace both upper timing chain tensioners every 70k miles. They're easy to replace, and if they're not replaced the chain guides will slap and break.

Sep 10, 2007 · A stretched timing chain might cause backfiring, loss of power, exhaust smoke, rough idle / acceleration and other problems resulting from incorrect valve and ignition timing.

This is a complicated engine and kit installation on a Ford 4.0L V6 engine so our tech walks through exactly what tools are needed, along with the proper removal and replacement of all components – …

Mar 26, 2023 · Seperate timing chains run to each head, one off the front of the jackshaft, and one off the back. Any work on the rear chain or guides involves pulling the engine.

May 9, 2022 · The chain is said to go for more than 100,000 miles (if you read the maintenance guide by Ford) but it can only survive 45-50 thousand miles. If you hear this engine rattling, you should just …

Timing belts have a recommended replacement interval, while timing chains are generally rated for the engines lifetime, although they need to be inspected occasionally.

Mar 8, 2008 · The timing chain is supposed to last the life of the engine, no replacement necessary.