strange tickin sound

[randyswelding]

howdy again ,it started back when i got the truck with about 243000 miles on it and started playin with the pump.if you go around the from of the truck in front of the grill with the hood down you hear a tickin sound. you open the hood it sounds like it has an air leak(is that a pssst i need a ps cooler)then stick your head in front of the grill you still hear the tickin you can run up the rpm and it still makes it,but it is intermitent in the upper rpm it tickes mostly at idal and slight about.and i swear it sounds like it is loosin air some where?can that be it the intercooler has a leak in it? new ps cooler needed soon:D thanks guys i still got 32psi though

[Philip]

At idle or with no load on it you wouldn't hear a boost leak.

Check your exhaust manifold gaskets. The manifold likes to scrink when your EGT's are high.

If the exhaust gaskets are good. Take a stethoscope and listen to the injection pump. If its making a ticking noise then you got problems.

[randyswelding]

idal with no load,it may have it when i got a load on her but the turbo is just soo loud the exhaust manifold is tight i rechecked it again when i did the oil change a weekago.i might try the stethiscop idea this week.but it is fur sure comin from the front somewhere.oh ya i just pulled a 60,000 lbs semi today hey ya then at idal still same tick but its been goin on for about 65,000 miles

[randyswelding]

i got some time to play with the truck i retorked the exhaust manifold and turbin housin and stethiscoped the valve covers and found #2 was louder than all the others so another valve job is needed,whats the intervals for a valve job i just did one this winter but thats about 25k ago is that too soon

[PToombs]

What do you mean, "valve job"? You need to get the valves ground? Or do you mean set the clearance? The Cummins book says every 1000 hours to set clearance. My truck wasn't done in over 150k miles. It wasn't off much at all. Maybe 1 nut isn't tight and the screw backed off.

[randyswelding]

sorry valve adjustment the nuts are still tight but it could got loose,when my dad gets back from albaq(nm)i can have him help me or have him do it while i have another beer .its only been about 25k since i did it last but thats my tickin noise.

[PToombs]

I would at least tighten the one or 2 down a little bit. I'm sure it's not doing anything any good beating together like that.
JMO

[GO OVRIT]

An old boss of mine used to say that a tappy valve is a happy valve. While loose isn't really good, it is better than too tight.

[randyswelding]

true,im adjusting them this weekend along with the kdp and govener spring then it should be good to go