oil pickup at start-up

[technoshark]

Just bought a 2000 XLT 4.0, and sometimes when I start her up a get a racket from the engine for about 1 - 1 1/2 seconds, until the oil pressure kicks in. It seems to be more pronounced when the temperature is cold. When it's warm, oil presure is immediate. Any ideas or suggestions? I thought it might be a bad anti-siphon valve in the oil filter, but I've changed it to a Mobil 1 filter and it's still occuring. Help!

 

[eXcali]

Have you tried switching to a lighter weight oil durring cold months? On that topic if it works you could run 0w-20 full synth year round.

 

[2000StreetRod]

Sohc?

If you have the SOHC V6 engine then you're probably hearing the timing chains rattling and their plastic guides are worn. It's a common problem that is more noticeable when the weather is cooler.