See procedure listed below for 3.1L and 3.4L in numerous Chevy, Buick, Pontiac and Oldsmobile models. Malibu,Classic, Lumina, Alero, Regal, Century, cool Prix, grand Am, Montana, Transport, venture van, Silhouette, etc.
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1999 Pontiac 3.4 V6 3400. Question:Top of motor tore down for oil acquiring in coolant. Gaskets. Found negative at coolantjackets. To replace intake gaskets what is the procedure for installing correct size push rods inthe right spot and also valve adjustment after taking push rods the end of means to gain gaskets. I am formergm technology years ago, now heavy truck.
Thank you because that the generous tip / Donation. Answer:There is no one-of-a-kind valve adjustments top top this motor as was the instance with the enlarge Chevy smallblock. Rocker arms are simply torqued come specs. The most necessary thing is the the push rods areinstalled correctly. They are various lengths. GM recommends new lower entry bolts, and also haveupdated the torque specs top top the rocker arms and also lower input bolts.
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The intake and exhaust rocker / Pushrods are labeled in the picture below.Exhaust pushrods are longer than intake. Input valves are closer come the valley of the engine.
Torque spec ~ above rocker eight is:14 NM (124 in.lbs.) plus 30 degreesLower entry bolts:long bolts- 13 NM (115 in. Lbs.)Short Bolts- 25 NM (18 FT. Lbs.)
1- Exhaust rods (Longer) room in this position2- input rods (Shorter) room in this position
Tip / Donation
Bolt part numbers11588914 long11588915 short
No compression top top 3.4 V6 Aztec, replaced one cylinder head only yet did remove press rods etcfrom both to replace gaskets, also turned the engine end without press rods great compression,left overnight tho no compression any type of one have any kind of ideas i am stumped. Lifters? Sound prefer you have the press rods in the wrong order.Check them again using picture above.
I"m functioning on a 3.4l however when i tighten the rockers i have actually no compression and i have push tubein the bespeak they should be deserve to my lifters be poor this car set for awhile Sitting because that a long time will certainly absolutely cause the lifters tobe an extremely hard to pump up. One of two people they will should bereplaced, or you deserve to run the engine because that a while to view ifthey will. Running too lengthy though can cause otherengine damage.
When u open up a valve cover to a 3.1 v6 on an olds cutlass? to be the rocker arms claimed tobe loose? Well, no they must not be loose. If they room the rockerarm studs may have actually pulled the threads the end of thecylinder head. If that occurred you would need to drilltap and using Helli-Coil come repair.
I simply completed this job, and also after assembly automobile worked and ran fine. Do atest drive of 3-5 miles, Axel indigenous stop and also while moving. Drove car backhome, idled for a couple of means, then drove a much longer distance. After possibly 5miles, stopped at a red light, and noticed what sounded favor valves tapping,then upon pressing the gas to accelerate, automobile seemed to shed power and"check engine" light started blinking. Is it possible the rocker arm bolts couldhave to be improperly torqued? Yes, this sounds like at least one that the rocker studs haspulled that is treads the end of the cylinder head. This is causinga misfire, therefore the blinking check engine light. I wouldsuspect the is the one or much more that to be improperlytorqued. There is a fix kit to resolve this. That comes with adrill, tap and dye, and insert.
Had a rattle noise in mine 3.4l engine, misfiring ~ above #4 cylinder, gotten rid of the valve cover discovered thatthe treads are stripped the end of the head, perform you think a Hellicoil will certainly be solid enough come repair. Yes, a thread repair kit will execute the trick and will actuallybe more powerful than the factory setup. Just make sure whenyou drill and also tap because that the Helicoil, that is that absolutelystraight v the initial hole. Friend don"t come be off anywhen managing a rocker arm and also valve traincomponents. Usage some red Loctite on the object of theinsert before you screw it right into place.
while instead of my push rods ns mistakenly placed an exhaust rods in an intake rods place.. Inoticed when tightening (with 3/8" ratchet)A distinct noise and bent the push rod. IS over there a wayto understand if ns bent the valve or cracked the piston without removing the head again? If girlfriend did not begin the vehicle, you"re most likely ok andjust bending the press rod. I would certainly install a brand-new correct sizepush rod, and also after getting every little thing tightened backdown, rotate the motor over by hand to make certain there isnothing damaged and also no interference.
I just mounted a rebuilt head and also when i tighten down the #3 one #5 on the 3.4 I have the right to see the intakevalve open which provides me no compression when I examine it v air. We don"t understand why therefore theirsending me another head for my old head when put ago on doesn"t open up the valve thePushrods space correct the speak is proper an principles why? Some of the valves opening when you tighten down therockers is normal. Which people that open depends top top theposition of the camshaft. The component that does no makesense is the they go not carry out this after ~ re-installing theold cylinder head.
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I did the very same thing the an previously poster walk in that ns torqued the press rod bolt to 124 FOOTlbs. Stripping the cylinder head. You comment saying that there to be a repair kit to fix this???Where could I find this repair kit? Thanks The thread repair kit deserve to be found at any kind of local parts store.