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#3615738 - 04/20/17 08:05 PM It's timing chain guide time!
Marauder2004 Offline
n00b

Registered: 04/01/06
Posts: 48
Loc: VA
I thought I'd share a recent oil report from one of my work beater cars, an '04 Grand Marquis. This is the second '04 GM I've put through highway service for my job. The first is still going strong at 249k. This one now has 243k. Both have had oil changes at roughly 15k mile intervals since I started using them with around 50k on the odometer. Both will amazingly still run up to 15k without having to add oil. The last three reports have indicated elevated AL levels.
I guess I'll pull the old mule into the garage and start tearing the front off to get to those guides.


Attachments
04142017.jpeg


_________________________
04 MM Silver Birch/Light Flint, HS, TO, 6CD
04 MGM LS Black/Dark Charcoal
06 MGM LS Ultimate w/ HPP, Black/Dark Charcoal
69 Marquis convertible, 429
48 Ford F4


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#3615778 - 04/20/17 08:45 PM Re: It's timing chain guide time! [Re: Marauder2004]
bigROC209 Offline
Over the Hill

Registered: 04/11/12
Posts: 2169
Loc: Stockton, CA
What kind of oil/filter are you using to go 15K between oil changes?
_________________________
2002 Marquis LS Precision Trac, new engine @ 125K, GT Wheels, HP tires, SCT Xcal 2, 91 Octane tune from BOC, Traction Locker w/Ford Racing clutches, 3.55's, Police D/S, Ford Racing IM @114K, 75mm TB, Trick Flow Plenum, Ziptube, GT MAF, P71 Rear Coils, Summit Racing UDP's, HPP Sway Bar, Gas KYB's, J-Mod, 2-1/4" Dual Exhaust, Thrush Glasspacks & 18" tips, MSD COPs, NGK TR55's & Grey Injectors, Pinstripe removed, Disc changer, 2400 watt Pioneeer amp & 6x9's, Kicker Comp VR 10" DVC subwoofers.

Bottle in the trunk coming soon!


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#3616130 - 04/21/17 02:27 AM Re: It's timing chain guide time! [Re: Marauder2004]
a_d_a_m Offline

3 Orange Whips
Posting Addict

Registered: 10/25/05
Posts: 22205
Loc: Cleveland, OH
I'd like to see how those guides look at 243k if you'd be so kind as to post pictures.
_________________________
'03 Marauder - tune, J-mod, K&N, Addco swaybars, Heinous control arms, Steeda underdrives
'07 P71 - TR3650, Exedy clutch, Modular Head Shop stage II cams, Kooks headers, underdrive pulleys, 3.27 Trac-Lock
'91 LTD Country Squire - HO swap, WR-AOD, 3.55LSD, cargo coils all by pantera77

Former owner of: '02 GMQ GS | '04 GMQ LS | '04 GMQ LS Limited | '04 MM

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#3617122 - 04/21/17 08:45 PM Re: It's timing chain guide time! [Re: a_d_a_m]
Marauder2004 Offline
n00b

Registered: 04/01/06
Posts: 48
Loc: VA
Originally Posted By bigROC209
What kind of oil/filter are you using to go 15K between oil changes?


I have only used Castrol Edge (gold bottle) 5W30 in both cars. The filter brand varies with what's on sale. Usually I use the OEM 820S, but sometimes I find the higher end Purolater, Bosch or Wix on sale. I realize the OEM filters are not intended for a 15k interval, but 80% or more of my driving is at 70+mph steady running.

Originally Posted By a_d_a_m
I'd like to see how those guides look at 243k if you'd be so kind as to post pictures.


I dug into it today and here's what I found. I discovered the source of the AL content, but it wasn't as bad as I had expected after running for several tens of thousands of miles after the AL levels started to increase. The plastic was worn through on the right side, but not (yet) on the left.
I replaced the guides, the other plastic piece, and the tensioners. Not too bad of a job but I'd rather replace an intake than do this again- which is what I'll be doing tomorrow. I have been noticing a bit of moisture at the metal/plastic interface below the thermostat housing. I replaced the intake on the other high mileage Merc two months ago.


Attachments
20170421_160801.jpg

20170421_163127.jpg

20170421_154200.jpg




Edited by Marauder2004 (04/21/17 08:48 PM)
_________________________
04 MM Silver Birch/Light Flint, HS, TO, 6CD
04 MGM LS Black/Dark Charcoal
06 MGM LS Ultimate w/ HPP, Black/Dark Charcoal
69 Marquis convertible, 429
48 Ford F4


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#3617258 - 04/21/17 11:39 PM Re: It's timing chain guide time! [Re: Marauder2004]
a_d_a_m Offline

3 Orange Whips
Posting Addict

Registered: 10/25/05
Posts: 22205
Loc: Cleveland, OH
Those don't look bad for 200+k on them.
My '02 Marquis was chewed all the way through at 100k (hence the need for the TSB from 2000-03).
_________________________
'03 Marauder - tune, J-mod, K&N, Addco swaybars, Heinous control arms, Steeda underdrives
'07 P71 - TR3650, Exedy clutch, Modular Head Shop stage II cams, Kooks headers, underdrive pulleys, 3.27 Trac-Lock
'91 LTD Country Squire - HO swap, WR-AOD, 3.55LSD, cargo coils all by pantera77

Former owner of: '02 GMQ GS | '04 GMQ LS | '04 GMQ LS Limited | '04 MM

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#3631929 - 05/07/17 02:10 AM Re: It's timing chain guide time! [Re: Marauder2004]
bspurloc Offline
Climber

Registered: 07/09/09
Posts: 698
Loc: New England
I am more interested in the pic you took!
I thought the intake had to come off to get to the timing chains??! not sure why I thought that, and valve covers?
_________________________
'03 Sport
'07 Audi Q7
'87 Thunderbird 250,000 miles v6 blown head gasket frown. I regret having it towed to the junk yard.

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#3632057 - 05/07/17 08:33 AM Re: It's timing chain guide time! [Re: Marauder2004]
Marauder2004 Offline
n00b

Registered: 04/01/06
Posts: 48
Loc: VA
The intake does not have to come off to remove the front cover. The front bolts in the cam covers do have to be removed. I remove the front 5 or 6 bolts on each side to gently lift and break the seal on the front of the cam covers to the top of the front cover. You just have to be careful to not break the cam cover gaskets. As far as the intake removal- that was a separate job I did right after I finished the timing components and front cover.
_________________________
04 MM Silver Birch/Light Flint, HS, TO, 6CD
04 MGM LS Black/Dark Charcoal
06 MGM LS Ultimate w/ HPP, Black/Dark Charcoal
69 Marquis convertible, 429
48 Ford F4


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