Knocking/pinging sound????

[1988Rangerxlt]

hey guys, i just picked up a 88 ford ranger 4x4 with a 2.9 it had sat for a while so i tossed in a new battery and some fresh gas been driving it for a couple of weeks runs really good, and christmas eve i jump into drive the girlfriend home and i start it and its making a knocking sound so i turned it off checked the oil it was a bit low but nothing major so today i had the time top top it up and i fired it up again and its doing the same thing. i didnt drive it that night its just sat till today. any ideas of what might cause this?? i dont think it could be anything to crazy cause it was fine before and when i had driven it earlier it was okay.

 

[1988Rangerxlt]

would the pcv valve being clogged cause this? or nad plugs and wires?

 

[Snurfer]

had a 92 2.9 and in the mornings when i started it up it would tick for a little but went away once the motor started to warm up. it didnt tick at all during the warmer months but once it got colder it would tick.

 

[1988Rangerxlt]

ok well should i just let it warm up?? and see if it stops like it had sat for a day then i started it and it was fairly cold oputside

 

[1988Rangerxlt]

anyone have any ideas? i have nothing to drive till i figure this out

 

[IMenriched]

anyone have any ideas? i have nothing to drive till i figure this out

If a "tune up" has not been done for some time....it sure couldn't hurt to get those refreshed.

has the codes been retrieved ??

it is a knock...meaning heavy thud?? OR a click or ping type sound More high pitched??

ALSo might not hurt to changed the oil and filter too.....in case the oil filter has a internal failure. this way you can monitor what the oil is like coming out

 

[loneranger48]

maybe a weak oil pump which would in turn make it knock due to a lack of oil.