engine noise after oil change/sticky lifter maybe,can some one help me

[j cAT]

so at idle no noises...when it rev's the engine is rapping and at high rpm its missing as well...

I believe it is engine damage.....let us know what come apart..

[2005chevimpala]

Originally Posted by j cAT

so at idle no noises...when it rev's the engine is rapping and at high rpm its missing as well...

I believe it is engine damage.....let us know what come apart..

yes thats is correct,at idle no noises,high rpm,rattling and misses,the garage is waiting on the o.k from an insurance adjuster who was appointed by gmpp warranty of canada to varify there is a noise in the engine before letting the mech's tear it down to see what the problem is,this goes for any aftermarket warranties requardless of the brand name of cars

[surfer11]

Originally Posted by 2005chevimpala

i changed my oil and now my car has a loud ticking rattling noise on the top part of the engine,almost sounds like a noisey lifter like its stuck,may be dirt got inside after the oil change,can someone tell me how to free it up,is there something i can put in the oil,i have had my car running for 2-3 hours now and still there,thanks she's missing bad to ,the engine light is on and feels like she is only working on 5 cyl's like a dead plug,anyone know how i can check to see if a plug is bad,and if there is a bad spark plug would it make the engine rattle on the cyl the plug is not working in.

2003/ 3400
yep know exactly, bolt holding down rocker arm broken, just cost me $3000 to replace with used engine with 36k. also included changing dexcool to green stuff, and replacing intake gaskets and main seals just to be safe

[2005chevimpala]

Originally Posted by surfer11

2003/ 3400
yep know exactly, bolt holding down rocker arm broken, just cost me $3000 to replace with used engine with 36k. also included changing dexcool to green stuff, and replacing intake gaskets and main seals just to be safe

if was just a the bolt broke why could that just be replaced or repaired,how come u had to replace the whole engine

[surfer11]

Originally Posted by 2005chevimpala

if was just a the bolt broke why could that just be replaced or repaired,how come u had to replace the whole engine

I did a seach from gm records and found out they had replaced intake manifold gaskets at 17k and did it again at 57k, I now had 90k miles and wasn't sure if there was any damage due to the gaskets being being changed twice. I could have had the head repaired. At a reasonable cost but what would have gone next. With valve cover off four of the rocker arm bolts pulled right out with a little tightning just to see if that would happen, we had already planned on swapping engine. The machanic was a certified gm teck. He knew of this problem. He also explained that gm knew of this problem and to fix it they install bars stop leak from the factory, because dexcool eats gaskets. engine cost $1400, labor $1400, gaskets fluids and tax. $300. pricy but runs good now. Crate engine $4200 plus labor. more in it than its worth but was stuck and didn't want breakdown later.

[2005chevimpala]

Originally Posted by surfer11

I did a seach from gm records and found out they had replaced intake manifold gaskets at 17k and did it again at 57k, I now had 90k miles and wasn't sure if there was any damage due to the gaskets being being changed twice. I could have had the head repaired. At a reasonable cost but what would have gone next. With valve cover off four of the rocker arm bolts pulled right out with a little tightning just to see if that would happen, we had already planned on swapping engine. The machanic was a certified gm teck. He knew of this problem. He also explained that gm knew of this problem and to fix it they install bars stop leak from the factory, because dexcool eats gaskets. engine cost $1400, labor $1400, gaskets fluids and tax. $300. pricy but runs good now. Crate engine $4200 plus labor. more in it than its worth but was stuck and didn't want breakdown later.

oh not good,i'm on my way to the garage right now to see what or if they started my car yet,will keep everyone informed on this,just had a call from the dealership that they have to start from the top,remove the intake,top pans and so on and keep going till they find the problem,biggest problem here is it is too close to xmas and they can't start the teardown till the earlest jan 5th,rental cars under the gmpp ext warrty is only good for 5 days max and can't get one till a wrench is put to the engine on the 5th of jan,not pleased with my car right now,up till now she was working great

[surfer11]

Originally Posted by 2005chevimpala

oh not good,i'm on my way to the garage right now to see what or if they started my car yet,will keep everyone informed on this,just had a call from the dealership that they have to start from the top,remove the intake,top pans and so on and keep going till they find the problem,biggest problem here is it is too close to xmas and they can't start the teardown till the earlest jan 5th,rental cars under the gmpp ext warrty is only good for 5 days max and can't get one till a wrench is put to the engine on the 5th of jan,not pleased with my car right now,up till now she was working great

Good luck, sounds like you have warrenty so that helps but I understand the frustrations. cold day in myrtle beach, Sc. no surfing for a long time.

[2005chevimpala]

Originally Posted by surfer11

Good luck, sounds like you have warrenty so that helps but I understand the frustrations. cold day in myrtle beach, Sc. no surfing for a long time.

I wonder if she jumped her timeing when i started her up after my oil change,she is misfiring on all cly's and rattling,some say if she jumped it would make her misfire and rattle on top,the garage doing the work on jan 5th i think they have an idea or know what it is but are not telling me because it maybe something so simple to fix and want me and the gmpp warrany to think it's a major problem so they can soak the warranty for what it's worth

[Blue Bowtie]

That's not uncommon on the 60º Chevy V-6 engines when they are over-revved when cold. NO engine should EVER be subjected to that kind of intentional abuse, but these engines are particularly susceptible to thick oil pumping up the lifters and popping the rocker bolts:



Pull the rocker cover and you might find this same image.

Instead of engine replacement, I've had good success with several of these by installing ChrisLyn stainless thread inserts in the head and bolting it back together. P/N 82160 should be the correct 8mm insert for that application.

[BNaylor]

Originally Posted by Blue Bowtie

That's not uncommon on the 60º Chevy V-6 engines when they are over-revved when cold. NO engine should EVER be subjected to that kind of intentional abuse, but these engines are particularly susceptible to thick oil pumping up the lifters and popping the rocker bolts:

I guess it is possible with the aluminum cylinder heads but I've never seen that as an issue unless there was prior work done and the rockers were not properly torqued per specs including using a torque angle meter. Is this a VIN "E" 3400 engine in the pic? Just how much over-rev are you referring to? The rev limiter should kick in at around 4K rpms in park or neutral. Redline is around 5800 rpms.

I'm still curious to see what brand(s) oil filter was installed since the problem occurred after an oil and filter change. For example the AC Delco PF47 oil filter and Fram equivalents have been known to cause a similar issue the OP is having. Poor oil pressure or defective anti-drain back valves. Both the VIN "J" 3100 and VIN "E" 3400 engines are susceptible to piston slap which in a worse case scenario could cause sufficient crankshaft variation and misfires. GM no longer makes the Delco oil filters. Now made by Champion Labs based on the crappy Ecore design.

[2005chevimpala]

Originally Posted by Blue Bowtie

That's not uncommon on the 60º Chevy V-6 engines when they are over-revved when cold. NO engine should EVER be subjected to that kind of intentional abuse, but these engines are particularly susceptible to thick oil pumping up the lifters and popping the rocker bolts:



Pull the rocker cover and you might find this same image.

Instead of engine replacement, I've had good success with several of these by installing ChrisLyn stainless thread inserts in the head and bolting it back together. P/N 82160 should be the correct 8mm insert for that application.

nice post,i hope that is all is wrong with mine so it's a fast and easy fix,what has to be replaced here,lifters and rockers and also if the bolt pulled through like that will they all eventually pop like that

[2005chevimpala]

Originally Posted by 2005chevimpala

Hey guys just changed the oil in my 05 impala 3.4,it took a bout half hour or so ,when i was doing it with the hood up for a half hour or so it was misty rain,i start my car now the engine light is on,when i rev her up she is missing and the engine is noisy like she is not running on all cylinders,i have had her running now for over and hour and is still the same,something may have got damp or wet maybe,can someone help me out about what to check or do,thanks

i meant to put my above posting on here but my mistake i started a new thread,it turns out the camshaft is gone in my car,68 000 km's,looks like gmpp is going to replace the whole engine as it is cheaper to do that then to replace the cam and lifters alone with the cost of labout and what if there is more damage below that they can't see and replace the cam and a week later i put another warranty claim in because something happens to the bottom part of the engine

[2005chevimpala]

Originally Posted by 2005chevimpala

i meant to put my above posting on here but my mistake i started a new thread,it turns out the camshaft is gone in my car,68 000 km's,looks like gmpp is going to replace the whole engine as it is cheaper to do that then to replace the cam and lifters alone with the cost of labout and what if there is more damage below that they can't see and replace the cam and a week later i put another warranty claim in because something happens to the bottom part of the engine

Hey guys,just got my car back,new cam and lifters,runs just like new,I am pleased with the job they did on my engine,quiet and smooth,hopefully no other problems with it,thanks for all you guys views,it was a $2200 canadian dollar job,glad i purchased the extended warrany through gmpp ,bit of fooling around trying to get the ball rolling with the warranty guys and being 2-3 days before xmas but all is good for now
i

[2005chevimpala]

Originally Posted by 2005chevimpala

Hey guys just changed the oil in my 05 impala 3.4,it took a bout half hour or so ,when i was doing it with the hood up for a half hour or so it was misty rain,i start my car now the engine light is on,when i rev her up she is missing and the engine is noisy like she is not running on all cylinders,i have had her running now for over and hour and is still the same,something may have got damp or wet maybe,can someone help me out about what to check or do,thanks

I have had my car back for 3 days know only thing is i find my cars steering is off a bit like out of line,the mechs said what they did to replace the cam shoud not have affected the alignment but what they had to do to replace the cam was drop the chassis,let the steering shaft go and also they let the struts go with the 3 bolts holding on them under the hood,my steering wheel is off center a litle to the right now as before they dropped everything from under here it used to be tilted a little to the left,i also find the steering a little tighter,i think they may have moved the steering wheel a little replacing the steering shaft but i don't think that would make her go out of line as they never touched any tie-rod ends or ball joints,seems like my car is pulling left ot right and vise versa almost like it does not know what way to go,it's not that bad but i noticed a difference in the way it drives since they did all the work,does anyone know if she should have been relined with a wheel alinement

[j cAT]

they must of changed the camber, and this could also be from bending some componet in the steering...if they disturbed the struts you will need an alignment and this should be covered since this was messed up on the engine repair..