Cobaltss/TC

Hey guys looks like GM finally found the fix to all our oil leak problems have a look.(Sorry if a repost this came out on dec 3,09)

#09-06-01-014: Oil Leak by High Pressure Fuel Pump (Reseal Camshaft Cap) - (Dec 3, 2009)


Subject: Oil Leak by High Pressure Fuel Pump (Reseal Camshaft Cap)


Models: 2007-2009 Chevrolet Cobalt SS, HHR SS

2007-2009 Pontiac Solstice GXP

2007-2009 Saturn SKY Redline

2008-2009 Opel GT

2008 Daewoo G2X

Equipped with a RPO LNF Engine

Please Refer to GMVIS




--------------------------------------------------------------------------------
Condition
Some customers may comment on an oil leak.

Upon further investigation, a technician may find oil leaking from the high pressure fuel pump area.

Cause
This condition may be caused by a camshaft cap that is not sealed correctly to the cylinder head, causing oil to leak out.

Correction
•Verify the customer's concern.
•Remove the fuel pump. Refer to Fuel Pump Removal in SI.
•Remove the camshaft cover. Refer to Camshaft Cover Removal in SI.




•Remove the camshaft cap (1). Remove all excess sealing material from both surfaces.




Note: It is critical during installation to ensure the bearing rear cap and cylinder head alignment is correct and the mating surfaces are flush.

• Ensure that all sealing material has been removed from the components and the sealing surfaces are clean and free of contamination prior to applying the sealer.

• Install and align the rear cap within 20 minutes of applying the sealer.


•Apply a 2.5 mm (0.1 in) bead of sealer, GM P/N 12378521 (in Canada, use P/N 88901148) to the cylinder head at the number 6 intake camshaft rear cap mating surface.
Note: Apply the sealer to all locations centrally locating the bead on the rail.

• Run the bead to 5 mm (0.2 in), dimension "a", as shown.

• Where the cap ends on the perimeter rail, extend bead approximately 4 mm (0.2 in) beyond edge of cap.

• Run bead, dimension "c", 32 mm (1.3 in) from the edge of the cylinder head as shown.

• Run bead, dimension "b", 20 mm (0.8 in) from edge of cylinder head as shown.


•Install the number 6 intake camshaft rear cap.
6.1. Tighten the cap bolts evenly to 5 N·m(44 lb in).

6.2. Tighten the cap bolts evenly to 10 N·m(89 lb in).

6.3. Back the cap bolts out 120 degrees.

6.4. Tighten the cap bolts evenly a final pass to 10 N·m(89 lb in).

•Install the camshaft cover and gasket, GM P/N 12609291. Refer to Camshaft Cover Installation in SI.
•Install the fuel pump. Refer to Fuel Pump Installation in SI.
Important: When installing the fuel pump, install a NEW high pressure fuel pump O-ring (GM P/N 12600313), high pressure fuel pump gasket-to-cylinder head (GM P/N12595951) and high pressure fuel pipe (GM P/N12615401).

Parts Information
Part Number
Description

12609291
Camshaft Cover Gasket

12595951
Gasket, High Pressure Fuel Pump Gasket

12600313
High Pressure Fuel Pump O-Ring

12615401
High Pressure Fuel Pipe

12378521 (U.S.)

88901148 (Canada)
Silicone

Warranty Information
For vehicles repaired under warranty, use:

Labor Operation
Description
Labor Time

J7549*
Reseal Camshaft Cap
2.6 hrs

*This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

Gimpster

Any way to get images associated with that? Kinda hard for me to visualize....

BYT*SS*TURBO

iTrader: (6)

Sounds like a pretty easy fix

Gimpster

I wrote a how-to awhile back for fixing the THREE places my car was leaking oil from in that region. None of them required pulling the valve cover and a cam shaft bearing cap though. Just wondering if this is yet another leak that hasnt started on my car.

ecotecturbo

Subd

Maven

iTrader: (1)

They arent pics, they are TIFF files, i cant save them from work for some reason, but they want you to remove the camshaft bearing cap from the end of the intake cam. This cap is the top half of the boss that the Hipressure pump mounts to

tomj77

iTrader: (2)

man i still dont have that leak everyone was having after 20k kms

rukkee

iTrader: (3)

I put the pic's in that were missing ......For some reason they shrink when when converting them from Tiff to Jpegs.

Gimpster

Thank you!

cardelino18

iTrader: (3)

holy crap now i know where that oil is coming from!!! i thought i blew the head gasket! THANKS!

wait so they can fix this problem no matter what upgrades i have?

Cobaltss/TC

Yes because the upgrades are not what caused the issue, it is a design flaw from the factory. so they can't deny it.

Permafried-

So this would make a 4th place on top of the 3 Gimpster discovered? I think I'm just going to tear my motor apart and rebuild it . The end-plate leak was resolved, my camshaft sensor is still leaking, I can't tell yet if this one is affecting me nor can I tell if the HPFP (from Gimpter's how-to) is an issue either.

rukkee

iTrader: (3)

Mine is leaking .....I checked it back in november when the Preliminary Info bulletin came out (I posted it a month ago ....but no one even commented on it lol.) . If you pull back the cover on the HPFP you should see oil on the bottom of the sound deadening foam.

https://www.cobaltss.net/forums/show...highlight=leak

Gimpster

My vehicle was leaking from the fuel pump (might be related to this TSB), the end plate AND the cam position sensor. Since I've taken those actions, the leaks have stopped thank god. Bad enough that it was moving a good bit of oil down the bell housing onto the front engine mount.

I'm guessing this is a more sexy fix to the fuel pump leak than mine, but I'll cross that bridge if it starts leaking again.

My valve cover tried to start leaking too, but re-torquing the bolts solved it.

Have you guys seen the TSB about the reluctor ring on the cam (I forget which cam) moving around? Hope that doesnt happen to me.

Cobaltss/TC

So got all the new parts put on and the end cap all sealed up all looks great!

ecotecturbo

subd. forgot about this

BYT*SS*TURBO

iTrader: (6)

Just sent my car to the dealer for this, mine leaked a LOT tho on 1 trip just from work. The oil was barely on the dipstick when I checked it. I had just changed the oil less then 1K miles prior to that, so I know it was full!!

Terminator2

Yep, they all leak there. I have never seen an LNF cobalt that did not have oil in that area. Even brand new ones with 2K miles. Mine was coming from the high pressure fuel pump. The o-ring does not seal well. I first cleaned it all up and put black RTV on everything but it started leaking again. I then used the stock gasket as a templet to make a new rubber and cork gasket. No leaks anymore.

I love your sig quote.

Permafried-

Mine's not there, it's around the camshaft sensor. The dealership already replaced and sealed my camshaft end-plate but I'm guessing the leak in this location could lead to leaks elsewhere if too much oil is getting past in the first place.

I really don't want my motor being torn apart that leaves too much room for error....

Terminator2

It is most likely at the high pressure fuel pump.

Permafried-

Ya it's tough to say exactly; it's not **** loads like it was before they sealed the end-plate, but we'll just say it's still rustproofed for the winter . I'm going to have to cave and get it looked at but I hate having this kind of service done.

HB_SS/TC

iTrader: (1)

save

northvibe

iTrader: (1)

hmm I didnt look to hard but I havent noticed a leak on mine... cant wait till spring and see if it has one lol

wantedSS/TC

iTrader: (1)

interesting none-the-less. I still don't have a leak and I'm at 12k. Time will tell though.

BartSS

I just made an appointment with the dealer. I have a very slight leak on mine to the point that I don't see a difference on my dipstick but hell if it's a service bulletin Ima getit fixed