![]() |
|
![]() |
#1 |
Did someone say MUD?
Join Date: Aug 2003
Location: Pullman,WA
Posts: 1,089
|
Pushrod question
Hey yall,
Ive got a popping sound in my motor...and some people have told me that i might have a bent pushrod cause i just replaced the cam lifters timing chain and forgot to replace the pushrods...yeah yeah i know ima idiot...but do yall think a bent pushrod could be causing the popping sound coming out of the #7 cylinder exhaust port area...ive got headers and because of that pop my header gasket keeps blowing right there...any help would be greatly appreciated... Thanks, Mike ![]()
__________________
Im in the market guys...so keep ya eyes peeled -------------------- Mini trucks are for guys who cant get it up! |
![]() |
![]() |
![]() |
#2 |
Did someone say MUD?
Join Date: Aug 2003
Location: Pullman,WA
Posts: 1,089
|
well I did adjust all of them the way mike ervin described on his web page no tighter and no looser...i really dont understand why its making that sound...
__________________
Im in the market guys...so keep ya eyes peeled -------------------- Mini trucks are for guys who cant get it up! |
![]() |
![]() |
![]() |
#3 |
driving is in my blood
Join Date: Dec 1999
Location: Mesa AZ
Posts: 5,720
|
Dont be so hard on yourself. Changing pushrods is not normal and deffenatley not standerd when switching cam+lifters. I agree its the valves not adjustedly correctly yet.
EDIT: take a valve cover off and inspect all the pushrods. If they are all ok, find the ticking noise with the motor running [quickly or else oil is going places ![]()
__________________
-78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me. Last edited by Tom; 12-22-2003 at 08:37 PM. |
![]() |
![]() |
![]() |
#4 |
Right turn Clyde
Join Date: Nov 2002
Location: Cincinnati, Ohio
Posts: 2,911
|
Setting the idle down will help to adjust the rockers while the engine is running. So there isn't as much oil flying around. You also have to take your time when you adjust the lifters. Adjust them one by one then wait a couple of seconds for it to change.
Have you done a compression check yet? For some reason I think it could be valve related. Like a burnt valve or something like that. If its not the valve lash. I think its to early to see a collapsed lifter or concave lifter. Compression test will help out a little bit if you are able to do it. Vacuum gauge wouldnt hurt either. ![]()
__________________
1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI Last edited by MylilBowTie; 12-23-2003 at 09:16 AM. |
![]() |
![]() |
![]() |
#5 |
Did someone say MUD?
Join Date: Aug 2003
Location: Pullman,WA
Posts: 1,089
|
yeah, thats the same thing i thought. I also took the heads off and took them to a machine shop and had them check and then cleaned. He did a vacuum check on all the valves and all valves checked out good. He said there wasnt anything wrong with the heads. Im completely lost and dont know where to go from here. Any help would be appreciated.
Mike
__________________
Im in the market guys...so keep ya eyes peeled -------------------- Mini trucks are for guys who cant get it up! |
![]() |
![]() |
![]() |
#6 |
Account Suspended
Join Date: Dec 2003
Location: Texas
Posts: 2,686
|
Did you break in the cam ?
Could be insuficcent lube up and one lobe wore flat or got one too tight and wore one flat.. you could possibly rent a mic to check the valve lift Might see if autozone has them Im sure you can find a cheap one If not look at pawnshops for a used one because machinsts tools arent cheap. but first try the compresion test test each cylinder document it and see what the variance is if one has alot less compression than the rest that cylinder is the culprit .. |
![]() |
![]() |
![]() |
#7 |
Registered User
Join Date: Nov 2003
Location: Ancaster, Ontario, Canada eh
Posts: 95
|
your exhuast valve is probably overtightened. with it running, back off the locking nut 'til the rocker starts to chatter. tighten 1/4 turn past the point it stops chattering. good luck
__________________
80 Chevy K10 350/350turbo 86 Chevy 1/2 ton shorty project truck 79 Chevy 1/2ton 350/350turbo not much to look at... ***Retired*** 97 Chevy C1500 4.3/5 speed.....daily driver |
![]() |
![]() |
![]() |
#8 |
Registered User
Join Date: Nov 2002
Location: lacenter, washington
Posts: 718
|
there is a possibillity a lifter never turned upon installing the new cam. all the adjusting in the world wount fix this. I had this happen recently. I pull the intake and found a ground up lifter .
![]() |
![]() |
![]() |
![]() |
Bookmarks |
|
|