4.0 Ticking

[greenmachine89]

Just bought a '91 Explorer that drove just fine but the other day it began to tick. I have a B2 with a 2.9 and it ticks only when I start it. This 4.0 ticks all the time! Is it low oil pressure, or is there sludge built up? Any ideas on what to add to the oil, do I need to clean out the oil pump, or replace it? Help!

[Godzilla9992]

You could start by testing your oil pressure, you can usually get a cheap guage from any parts place for $15-$20.

[greenmachine89]

Yea but my stock gauge says the pressure is good. Unless of course those don't work too well.

[Joel H]

Likely worn pushrods and rockers.

[greenmachine89]

So that meens new cam and everything! Might as well go with something for more power. For now how heavy of an oil should I use? 5w 20?I have 10w 30 right now.

[Joel H]

So that meens new cam and everything! Might as well go with something for more power. For now how heavy of an oil should I use? 5w 20?I have 10w 30 right now.

No cam change. The softer pushrods and rocker tips will wear out faster.

I sent a guy $!00 for some parts and included were a set of new rockers and pushrods for my ticking 4.0L. Unfortunatly that was nearly a year ago. Haven't heard from the guy in months.

[greenmachine89]

That sucks bad! I just talked to the local parts store and push rods are 6.99 each and rocker arms are 21.99 each