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#4723766 - 04/11/18 03:06 PM Replaced some valve stem seals, 4.0 ohv with Pic's
rollinpete Offline


Registered: 03/20/17
Posts: 351
Loc: Westfield, Ma.
I'm posting this for those who may have the same problem and want to fix it.

My ride in the sig. was burning some oil, slowly more and more, about a quart every 3000 miles or so. I only noticed a puff of blue on start up sometimes and figured (was hoping) the valve stem seals were going bad. (Also was getting more and more pinging under load).
Two months ago I decided I'd change them out, Now two months later, about a 1000 miles and a couple cans of gumout, the dip stick still reads full and the pinging is almost totally gone.
Also the engine runs so much better.Took me two days to do the job.

I'm posting some picks of the engine and tools if any one considers doing this job.
Tools needed, compressor and the plug hole adapter not pictured, spring compressor,and I bought a cheap (valve stem seal puller and installer) but not really needed, pliers and a socket will work.




(Notice how worn the old seal to the left is) ^^^^
(And the seals on the right)



_________________________
Pete.
97 Ford Expl. 4.0 ohv 4wd 5spddrive182k miles
Last Change;
Penn. Plat. HM 5w30
Supertech ST8 (wix), Fram CA8141

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#4723780 - 04/11/18 03:25 PM Re: Replaced some valve stem seals, 4.0 ohv with Pic's [Re: rollinpete]
PeterPolyol Offline


Registered: 03/06/16
Posts: 1172
Loc: toronto
Nice job man. Always love when the compressed air holds the valve with no problems.
Sidenote: Ford should have kept the 4.0L as OHV. I had a Ranger with that engine, miss the torque.

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#4723826 - 04/11/18 04:10 PM Re: Replaced some valve stem seals, 4.0 ohv with Pic's [Re: rollinpete]
JLTD Offline


Registered: 12/15/17
Posts: 385
Loc: US
Nice job thumbsup
_________________________
2015 4Runner SR5 1GR-FE

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#4723837 - 04/11/18 04:18 PM Re: Replaced some valve stem seals, 4.0 ohv with Pic's [Re: rollinpete]
car51 Offline


Registered: 03/12/15
Posts: 9872
Loc: Southwest PA
Pete: very nice write up and great post smile

USA Canada

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#4723879 - 04/11/18 05:01 PM Re: Replaced some valve stem seals, 4.0 ohv with Pic's [Re: car51]
rollinpete Offline


Registered: 03/20/17
Posts: 351
Loc: Westfield, Ma.
Originally Posted By: PeterPolyol
Nice job man. Always love when the compressed air holds the valve with no problems.
Sidenote: Ford should have kept the 4.0L as OHV. I had a Ranger with that engine, miss the torque.
Originally Posted By: JLTD
Nice job thumbsup
Originally Posted By: car51
Pete: very nice write up and great post smile

USA Canada


Thanks Guys.
_________________________
Pete.
97 Ford Expl. 4.0 ohv 4wd 5spddrive182k miles
Last Change;
Penn. Plat. HM 5w30
Supertech ST8 (wix), Fram CA8141

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#4723943 - 04/11/18 06:17 PM Re: Replaced some valve stem seals, 4.0 ohv with Pic's [Re: rollinpete]
Donald Offline


Registered: 03/21/04
Posts: 20248
Loc: Upstate NY
In the late 1960s I bought a Mustang with 289 that burned oil. I was 17 and I knew everything about cars and engines. Decided the valve stem seals needed to be replaced. Bought Perfect Circle ones. Then realized the area needed to be cut for the seals. Pulled the heads. Decided to lap the valves. Decided it would be better with a 3/4 grind cam. Bought a cam. Then wouldn't popup pistons be a good idea. How about the bearings, had crank turned. Engine was dirty, had it hot tanked. Months latter it was running, idled at about 1200. Would overheat in traffic.

So started with valve stem seals and went quickly down hill. Who knows if I needed to replace half the things I did.

Learned a lot. Sold the car and bought a 1969 Mach 1 Mustang with 351 Windsor.
_________________________
2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)


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#4724016 - 04/11/18 07:45 PM Re: Replaced some valve stem seals, 4.0 ohv with Pic's [Re: rollinpete]
CT8 Offline


Registered: 10/09/14
Posts: 10555
Loc: Idaho
OHV valve engines are so nice
_________________________
Artificial intelligence is no match for natural stupidity, we shall prevail

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#4724219 - 04/11/18 11:15 PM Re: Replaced some valve stem seals, 4.0 ohv with Pic's [Re: rollinpete]
boulderdentist Offline


Registered: 03/12/05
Posts: 57
Loc: Boulder, Colorado
Curious, may have missed but how many miles on the engine?

Scott

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#4724236 - 04/12/18 12:05 AM Re: Replaced some valve stem seals, 4.0 ohv with Pic's [Re: boulderdentist]
dogememe Offline


Registered: 04/15/17
Posts: 448
Loc: SF BAY AREA, CA
Originally Posted By: boulderdentist
Curious, may have missed but how many miles on the engine?

Scott


182k in his signature
_________________________
2007 Crown Vic 4.6 ~122K: Daily Driver
2010 Escape 2.5 ~66K: Rented on Turo
1997 Suburban 5.7 ~213K: Storage Unit

7K Mile OCIs with Valvoline Advanced Synthetic/SynPower 5W-30

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#4724262 - 04/12/18 01:14 AM Re: Replaced some valve stem seals, 4.0 ohv with Pic's [Re: rollinpete]
andyd Offline


Registered: 09/25/04
Posts: 6884
Loc: Marshfield , MA
The Rat's odo resets at 999999.9 It shows 32K. It has a 4.0. Its off the road, but it hauls the trash to pickup on the street a 1400 foot round trip. I run it in 4 low with the hubs unlocked. The truck has had a hard life for 132K. I have done nothing to the engine since I bought it back in 7/12. Just fluids and filters. One oil change of dino 5w30 since. Runs like a watch. Won't pass inspection. Makes a heck of a wood mover though. I'd love a better example of the Rat. Its a beat up old truck holding a great little 60' V6.
_________________________
'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline bulk 0w20 and ? filter

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#4725823 - 04/13/18 01:54 PM Re: Replaced some valve stem seals, 4.0 ohv with Pic's [Re: rollinpete]
SOHCman Offline


Registered: 03/29/10
Posts: 1281
Loc: USA
I have never done this with the head installed, what do you do to keep the valves from falling into he cylinder? Not an issue?
_________________________
If you want to do the whole "I'm a complete drop-kick" thing properly, they're the cars you drive, complete with the "doof-doof" sound system, loud exhaust, low profile tires and so on. -B320i

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#4725870 - 04/13/18 02:44 PM Re: Replaced some valve stem seals, 4.0 ohv with Pic's [Re: SOHCman]
rollinpete Offline


Registered: 03/20/17
Posts: 351
Loc: Westfield, Ma.
Originally Posted By: SOHCman
I have never done this with the head installed, what do you do to keep the valves from falling into he cylinder? Not an issue?

Wish I put this in the original post but I forgot.
You need a compressor and these attachments...Also start it at top dead center, I put my truck in 2nd gear with the e brake on, 5th would have been even better.Use a strong pen magnet or even some twizzers and make sure when you take off the valve spring retainer or (keeper's) there's some back pressure there, so that the valve does not fall into the cylinder. If you've never done this before watch a few youtube videos and read up on it .


_________________________
Pete.
97 Ford Expl. 4.0 ohv 4wd 5spddrive182k miles
Last Change;
Penn. Plat. HM 5w30
Supertech ST8 (wix), Fram CA8141

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#4725987 - 04/13/18 05:08 PM Re: Replaced some valve stem seals, 4.0 ohv with Pic's [Re: rollinpete]
SOHCman Offline


Registered: 03/29/10
Posts: 1281
Loc: USA
Cool idea! thanks
_________________________
If you want to do the whole "I'm a complete drop-kick" thing properly, they're the cars you drive, complete with the "doof-doof" sound system, loud exhaust, low profile tires and so on. -B320i

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