Belt! The V6 has a cam belt and is an interference engine. Replace at 110,000 miles.
The 4 cylinder has a cam chain.
Timing CHAIN
2.7 has chain, 3.4 (6cyl.) has belt
Yes.
4cyl chain, 6cyl belt
The 1990 has a chain. The 1991 has a belt.
If it is a 4cyl then no. It has an upper and lower timing chain. If it is a 6cyl then yes. It has a timing belt, an idler, and a belt tentioner that all should be replaced at the same time.
How do the timinh marks line up for buick ventury 1990 with a 6cyl 3300 engine
setting timing on a f150 4.9 6cyl
Short answer: Never. It doesn't have one. Long answer: The engine 4.0L 6cyl uses a chain, and those are usually for the life of the engine. There is a very small chance that this chain fails. In this case it will probably produce a rattling noise before it cause problems.
10 degrees btdc
both the 2.5l 4cyl and the 4.0 6cyl have a chain and most people dont replace them unless they are making noise i have had many jeeps and have never replaced one and all my jeeps have had between 100 and 200k on them
4cyl. engine does not have timing belt,6cyl timing belt and water pump should be replaced every 100k miles