Advice needed: cold engine knocking

[bookworm]

Hello everyone,

could you please give me a clue. As a start my 1995 Explorer at low ambient temperatures (like below +10C; I live in Russia so it's like half a year below that) I hear some soft and frequent knocking in the engine. Not always; it's intermittent. As the engine heats up, the knocking abruptly stops. The serviceman has checked the engine and found nothing wrong. The timing chain is OK. Any suggestions? Thanks in advance!

 

[Lube]

Hard to say without listening to it...cold engine piston slap?

 

[bookworm]

Maybe... Thanks!

 

[mfg3502]

Do a search on EGR valve.Might be cracked.

 

[bookworm]

Thanks, I'll check this out!

 

[Dono]

could just be the lifters pumping up. My 4.0 OHV tends to do this also.