I went out to start my jeep this morning and heard a knock. When I parked it last night it was running normal. I haven’t lose oil pressure and oil is full. Coolant temps are also normal. Can anyone help? Or am I completely at a loss with this engine
2001 2.5 engine knock / noise
- Thread starter Stege1999
- Start date
Probably piston slap..every 2.5 engine I have owned has been noisy. Keep the oil full and changed and find something else to worry about
Although I collect info about the 2.5s, I don't actually have experience working on them. So, others will know better than I do.
For what it's worth, my first reaction to your second video was that your exhaust manifold could be loose or cracked. Have you checked it? It's common on the 2.5s. Let me know if you want more links/posts about that.
And when you say you heard a knock, was it a one-time thing, and then this fluttering sound started?
For what it's worth, my first reaction to your second video was that your exhaust manifold could be loose or cracked. Have you checked it? It's common on the 2.5s. Let me know if you want more links/posts about that.
And when you say you heard a knock, was it a one-time thing, and then this fluttering sound started?
I replaced my exhaust manifold gasket 2 months ago.
No it sounds like a knock/slapping at idle then flutters when i drive. which leads me to believe its the timing chain but i'm not positive.
I had timing chain issues on two 2.5's so that is a possibility and they both sounded like a diesel. Pick up a mechanics stethoscope and listen around. Did you re-torque the manifold since replacing because they will loosen.
my 2.5 clanks first start of the day is sounds like a tick till it warms up. i just consider it piston slap.
Did two 2.5's chains and they were both singing their songs, Look at me I'm a diesel. Not really a big deal to replace and the Smelling chains are very reasonably priced. If doing it yourself I have a few tips if needed.