GM 2.8L V6 Engine Problem
Jay Kinney
into the crankcase. I've been told by a couple of repair places and GM
service shops that this is fairly common on this engine (2.8L V6).
Evidently the engine blows the intake manifold gasket. I was also told that
I was lucky as I had gotten to 80K miles before this happened. The shops
said this usually happens around 65K miles. Anybody else have this
experience with their 2.8s? I would like to hear what you have to say.
Thanks for reading.
Eric Alter
miles on mine.
--
__
/ /__ Eric Alter
/____/ eal...@vnet.ibm.com
OOOOO
David Deaven
I own a 1980 2.8L V6 with >180k on it, there are no major problems and
it still has the original gaskets. My only trouble sign is loose
bearings (as evidenced by low oil pressure). I have removed the valve
covers and re-sealed them to fix a leak, and the front main oil seal is
leaking a small amount of oil. I suppose I'm just lucky judging
from the stories I hear from other owners of this engine.
The manifold gasket isn't that tough to replace, right? I'd just
buy a new one and drop it in yourself, as long as everything else is
still performing OK.
--
David Deaven dea...@ishmael.ameslab.gov
A504 Physics tel 515-294-6878
Ames Laboratory fax 515-294-0689
Ames IA 50011
Lawrence P. Casson
Same problem here. '83 Pontiac 6000, 2.8L V6. I let a shop do the
repair and unfortunately let them replace the standard thermostat (185
degree?) with a cooler one. (Actually, they did it first and told me
about it later.) Within a few months, exhaust gasses were leaking into
the cooling system form a head gasket leak. I suspect the 160 degree
thermostat was the cause, as the engine was meant to run hot. The
cooling fan doesn't come on until 200-210 degrees, so there was a
considerable swing in the engine temperature whenever the car idled or
sat in traffic. I don't know where mechanics get the lame idea that
cooler thermostats cause less stress on the engine.
-Larry
Dennis Henderson
common on GM 2.8V6 engine. This is according to the
rebuild shop that just did mine (total failure of a
camshaft lobe at 88K miles).
On ANY engine check your oil frequently for signs of water
(foamy milkshake substance on the stick). Catch this early
and prevent total engine failure.
The cause of premature failure is due to aluminum parts
being used on steel blocks. This is a challenge for
cars from all continents-not just US cars. (Check
with early model Mazda 626 owners-ask them about their
head gasket lifespans).
...Dennis Henderson, rebuilt and *balanced* 2.8V6...and loving it.
Clifton Koch
I've seen this same problem posted by quite a few people. I have an S-15
that I bought used that supposedly had the engine replaced at 25K miles.
It was actually rebuilt, but I'll bet that it had the gasket failure. I
recently rebuilt the engine again, and was very carefull about the intake
gasket installation and used sealer around the water jacket holes.
Cliff
--
-----------------------------------------------------------------------------
Cliff Koch
Motorola Cellular Infrastructure Division
ko...@meerkat.cig.mot.com
Michel Denber
Supposedly, the placement of the EGR valve on this engine causes localized
overheating and gasket failure. This is mentioned in the Mar. 92 "Motor"
article I keep citing, "The V6 From Hell" (which is mostly about the
infamous MAF-related problems with this engine). That said, I have 76K
miles on my '88 Celebrity with the 2.8L V6 and no gasket problems so far.
It may be a problem specific to the Jimmy.
---
- Michel
David C. Evans
|> I just took my 84 GMC S-15 Jimmy into the shop because it was leaking water
|> into the crankcase. I've been told by a couple of repair places and GM
|> service shops that this is fairly common on this engine (2.8L V6).
|> Evidently the engine blows the intake manifold gasket. I was also told that
|> I was lucky as I had gotten to 80K miles before this happened. The shops
|> said this usually happens around 65K miles. Anybody else have this
|> experience with their 2.8s? I would like to hear what you have to say.
I had an '83 S-10 Blazer that did exactly the same thing at 83K miles. Now you've got me worried, as I now drive an '87 Fiero with the 2.8L V6!!
Dave Evans
Lewis Levine
I'm pretty sure all '86 Z24's had the al heads. Mine did and it never
had the problem described. I sold it with 123k miles on it.
lew
Anthony Anello
|> In article <jay_kinney-...@macp101.esl.com>, jay_k...@smtp.esl.com (Jay Kinney) writes:
|> with a gasket there's a good chance it will fail at some point.
|> I have seen several 2.8 engines do this. If you don't catch it right
|> away, the anti-freeze will eat up the bearings and you know the rest of
|> the story.
|>
|> dsc
|>
|> Dudley Cornman - Systems Programmer
|> Academic Computing Services
|> Eastern Ky. University
|> Richmond, KY 40475-3111
|> (606) 622-1986
I have an '86 z24 w/ 2.8l 6. I can't swear it, but I think it
has iron heads. Anyhow, no problem yet (knock wood) at 117,000.
--
Tony Anello \ ane...@adcs01.fnal.gov \ Fermilab, Batavia, Illinois
Mike A. Rintzler
>Thanks for reading.
My '86 Jeep Cherokee had the GM v6 2.8l. I had no problems with the engine
itself until about 85k. Then, I had a similar problem. The head warped,
sending my coolant into the oil. The shop thought originally that the problem
was my thermostat, and that it just wasn't pushing the oil through. So, they
replaced my thermostat, and I went on my way. I was driving on the highway,
checking my engine temp and all was fine. Then someone pulled along side me
and told me that my just emitted a cloud of smoke. I looked in the rearview
and I didn't see anything, but seeing how my day was going I pulled over to
check. I opened the hood, and sure enough there was a lovely oil/coolant goo
coating the engine. What happened was the coolant in the oil got hot, and
turned to steam, creating a lot of presure which (fortunately) blew open
a valve. The funny thing is, the car never ran better! $900 later, I got
the car back. It also had a bad carb which was running the idle at 1500 rpm.
My girlfriends father told me stories of their Oldsmobile with the same engine
that went through one about every 60k. I sold the Jeep. That engine is
trouble.
-Mike
--
|~~Michael~Rintzler~-~Library~Systems~~|~Neither~a~borower~nor~a~lender B~|
| mrin...@eden.rutgers.edu | I Don't take any crap, |
|_______Office: (908)445-5896__________|_______and I don't give a shit.___|
acss...@eku.acs.eku.edu
will...@sec.cpc.gmeds.com
I had the same problem with an '83 S-10 2.8L. I don't recall the exact
mileage, but it was in the neighborhood of 60K to 80K. It also happened
soon after I flushed the cooling system with Prestone radiator flush, but
that could be a coincidence. At any rate, I replaced the gaskets myself,
and the process wasn't all that simple. It was really tough to get at the
manifold bolts near the back of the engine, but if you have the right
tools .....
That truck served me well all the way up to 160K miles, when I traded it in.
Sia Navid
I just replaced the intake manifold gasket on my 1985 Jeep Cherokee with 2.8L
V6 Chevy engine ( Note: 1985 Jeep built by AMC used Chevy engines ).
It was letting water into the crakcase after about 50K miles since the last
head job on the engine. The engine manual also mentions oil leakage problems
on some of these engines. Mine definitely had it and I have to wait to see
if my attempts at fixing it were successful. The engine has about 124K miles
on it now.
Changing it is straight forward, just allow enough time for it and follow
the instructions.
Siamak Navid
dddi...@willie.b21.ingr.com
>I just took my 84 GMC S-15 Jimmy into the shop because it was leaking water
>into the crankcase. I've been told by a couple of repair places and GM
>service shops that this is fairly common on this engine (2.8L V6).
>Evidently the engine blows the intake manifold gasket. I was also told that
>I was lucky as I had gotten to 80K miles before this happened. The shops
>said this usually happens around 65K miles. Anybody else have this
>experience with their 2.8s? I would like to hear what you have to say.
>
>Thanks for reading.
Its true. My 1987 Jimmy did the same thing at 60k miles.
Replaced the manifold gasket with a FelPro gasket, changed
the oil and ran the vehicle till 92k, then sold it. It was
still running strong when I got rid of it last year.
Dan
Bill Fuhrmann
D|I had an '83 S-10 Blazer that did exactly the same thing at 83K miles. Now yo
D|ve got me worried, as I now drive an '87 Fiero with the 2.8L V6!!
Don't worry, be happy. 8-)
My 88 Fiero has 115K miles, no problems.
* QMPro 1.52 * An apple a day keeps the doctor away, when thrown well
Ian R. Campbell
>I'm pretty sure all '86 Z24's had the al heads. Mine did and it never
>had the problem described. I sold it with 123k miles on it.
My dad had bought a 1982 Buick Skylark in March with 79k miles and the
engine went in May with 80k because the problem that was said.
--
Ian R. Campbell i...@penrij.UUCP
CC1...@gitvm1.gatech.edu
the low mileage award.
I owned an 86 gyp (spell that Jeep) with the 2.8 and was awarded
the $1500 repair bill at 39,000 miles (same problem, water in the oil).
The failure was just after Chrysler took over and the drivetrain
warantee was 36K. I talked to the Chrysler zone and when I finally
got to someone with authority, he said '39K miles, the vehicle is
covered for 36K. No we're not going to even consider partial coverage.
End of discussion.'
Even though that was a long time ago I still enjoy running down
Jyp's in particular and Chrysler in general.
Nick Parker
...
>the $1500 repair bill at 39,000 miles (same problem, water in the oil).
If I'm not mistaken, all the posts with this problem have been on 86's
or older. Did GM make any mods in later years to address this problem?
Anybody seen this problem on later models? I have an '89 blazer with
the 2.8.
--
Nick Parker - nspa...@ingr.com - Intergraph, Huntsville, AL
Statements/opinions are my own, not necessarily Intergraph's.
acss...@eku.acs.eku.edu
> I've been following this thread for a while. I feel I qualify for
> the low mileage award.
> I owned an 86 gyp (spell that Jeep) with the 2.8 and was awarded
> the $1500 repair bill at 39,000 miles (same problem, water in the oil).
I doubt it. Had a friend that had one in an '84 S-10 Blazer less than a
year old I think. The engine wasn't any good and was replaced under
warantee.
Peter Sheriff
going strong at 130,000 miles (210,000 km). Only had carb and alternator
problems. No engine problems. The reason I sold it was that other parts
were showing their age (rad, gas tank, catalytic converter). All easily
repaired or replaced for a price but it would have cost more than the car
was worth.
Pete
dln.neo...@gmail.com
Now exhaust doesnt move through the block except inside the cylinders before expelled through your exhaust valves. The exhaust then moves through separate passageways through your heads and intake manifold. If you have exhaust getting into your cooling system then you have an internal crack on the head between an exhaust port and coolant port.
Your head gaskets blowing is a result of a few different possibilities. Least to worry about would be old gasket going bad but it could also be from the head bolts not being torqued back down to OEM specifications which should be 40 foot pounds + a quarter turn on all 16 bolts. Over torquing can result in stretched bolts and warped heads and under-torquing can result in excessive head gasket failure and/or warped heads.
Steve W.
code and cause lower MPG. The engine uses the coolant temp to determine
fuel flow as the engine warms up. Lower temp coolant makes the ECM
richen the mix and after a certain time period will set a trouble code
because the engine isn't heating up to proper operating temperature.
--
Steve W.
Paul in Houston TX
> Hey Larry.
Obviously code. Probably a drug dealer or terrorist.
No one else, except maybe google groupies, respond to
10 year old messages. (Aug 2, 1994)
Tegger
email.me:
wares. Nothing else explains their bizarre behavior.
--
Tegger
Tegger
208.90.168.18:
How much you wanna bet we never hear from "dln.neosnipes20", ever again?
--
Tegger
Paul in Houston TX
I lost 10 years somewhere.
Yah, it was probably a code message.
brandon...@gmail.com
You can email me brandon...@gmail.com
Thanks
Brandon DeHart
Scott Dorsey
>I own a 1991 chevy s10 2wd pick up. It has a 60 degree 2.8L v6 it drinking coolant but in not pushing out the overflow and it's not showing a milk oil mixture if you could help me into the right direction I'd appreciate it.
If you pull the plugs, do they all look about the same or is one nice and
clean?
Water is going somewhere... either it is leaking on the ground or it's going
into the oil or it's going into the cylinders. You've ruled out one of the
three. Now you're looking either for a leak into the air or into the
cylinder.
A pressure-test will tell you for sure what is going on, but if you're seeing
one very clean sparkplug you won't have to go that far, even.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
Steve W.
it's either going into a cylinder(s), out a leak at the heater core,
leak at the water pump or radiator.
Pull the plugs and see if they all look the same, 1-2 nice clean ones
while the rest are dirty would point to a head gasket issue.
Check the drain for the core and see if it shows coolant, Run it until
it gets up to temp and look for a leak. It could be leaking but the
airflow and warm engine are boiling it off and not showing the leak.
--
Steve W.
mcdonald...@gmail.com
Sanity Clause
<mcdonald...@gmail.com> wrote
> I have an 88 S-10 and I have replaced the Thermostat water pump and still
> water vkinv somewhere. Can anyone tell me where?
No, not *there*, over THERE!
Can't you see me pointing?
ben91932
> I have an 88 S-10 and I have replaced the Thermostat water pump and still water vkinv somewhere. Can anyone tell me where?
HTH
Ben
djras...@aol.com
chrisb...@gmail.com
> I have a 1988 2.8L Chevy S10 Blazer with a high idle problem. Its has 234,000 miles on it. Its all tuned up replaced IAC. It was up to 1050 RPM but have gotten down to 800. Can anyone show me a picture of where exactly I drill to get to the idle screw to adjust it. And after I adjust it I imagine I have to reset the TPS. Would I also need to reset the timing?
Second you only touch the timing if you some how jumped a tooth or you accidentally spun your distributor and threw the timing out of wack.
the only drilling i remember reading was the bolts on the tps were pressed in bolts with smooth flat head. mine were torques bit i think.
third if you cleaned your IACvalve did you follow the cleaning instructions to the "T" cause some ppl were messing then up using abrassive agents. also when you remove the IAC the plunger will get miss adjusted and only way to learn its position is to have a tps sensor properly installed. you'll need an ohms meter and a chilton's manual. top of my head i dont remember specs. Adjusting idle set screw is simple no drilling needing i dont think. but honestly i backed mine all the way out till so that idle adjustment would hit the mount or whatever the screw is mounted through then tightened it so that it just lifted the throttle back up just enough to say air can pass.
Mine was or is still i should say, the twin port fuel injected throttle body. And with my high idle issues it could have been:
*simple idle adjustment
*dirty IAC Valve
*dirty EGR or old vacuum hose dry up. they are plastic and crack and i remember so many damn vacuum hoses to check
*Bad tps
*coolant temp sensor(not coolant temp sending sensor-this one is for the gauge feed and i think they are pretty close to each other
Bad sadly my first high idle i checked all the above and my issue was someone had pulled the cable that whys off for the cruise control plunger unit which has a piece of flat metal with holes in it that you can change it to take the slack out the line so the throttle never dropped all the way down. one of those things youd never think was the issue
i love my 92 gmc sonoma and the 2.8l 5speed was pretty fun to drive. But mines been parked cause i put a new water pump in and was broke and live in tx so said f*ck it waters free and it never freezes. But two years ago tx froze for a whole week state wide and froze the motor and pushed out freeze plugs blew the hoses and i can only guess but messed up the intake gasket cause after it should be full after adding coolant it keeps taking it till it comes out the valve cover oil add port. But fires right up and doesnt have any misses. actually bout to go out and start taring it down. which is the reason im on a 20+ yr old thread waisting time responding to ppl who are either dead by now or in prison. Im just procrastinating. But if you still got troubles hope this helps