pushrod tube seals

[richcarl32]

if one wanted to change the pushrod tube seals on a stock 2.0 L FI, would it be impossible to do such a job with the engine installed or is this an engine removed job. Any tips or advice on this subject? i suspect i have a vacuum leak in this area. Vacuum is everything on a FI vw right?
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Richard Carlton
78 Bay
2.0 L FI

[westy78]

Removal of the engine for pushrod tube seals is a 1600 thing. On a typeIV engine remove the rocker arms, wire retainer, and pushrods and then you can pull the tubes out through the heads. It's reccomended that you get good quality Viton seals for best lifespan and sealing.
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Jasan C.
'78 Westy

VW Campmobile, it goes on vacation with you.

[BIGTSV]

A Corvair trick for keeping heat off of the seals is to use white high tempreature paint. Paint the push rod tube area by the seal with the paint, don't have to go crazy with the paint, just enought to help keep the heat off of the seal
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1989 VW White Star
English made DR Martens

[richcarl32]

okay, Remove the rocker armsand the wire retainer, pull the tubes , replace the seals ans then paint my new ones with white temperature paint. Wher can i find white temperature paint? and how much do i need? and how much should it cost? i bought the seals from the busdepot. they were not very expensive though. i am betting even if they aremt the best brand or quality they will be better than the 28 year old ones i have now, especially sinc htey will be with a fresh coat of paint.
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Richard Carlton
78 Bay
2.0 L FI

[renobdarb]

I asked this question here:

http://www.thesamba.com/vw/forum/viewtopic.php?t=167320&highlight=

and got some comforting responses and advice. Apparently it's relatively easy (haven't gotten around to it myself, but it's on the schedule for this fall).

Here's a really good article that will walk you right through it from Type2.com:

[ChuxBus]

I would guess that the primary symptom of a faulty push rod tube seal would be the puddle of oil in the driveway. I wonder to what extent such an issue would affect the engine's ability to run (ie. the vacuum leaks mentioned in the first post)?

I have a drippy push rod tube seal (engine side), but the engine runs fine.
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-Chuck
1978 Bus & 1969 Bug
"Don't make a fuss, just get on the bus" -Frank Zappa

[ChiTwnVW]

Isn't a vacuum leak mostly related to fuel delivery? Can't imagine the pushrod tubes leaking doing much on that front...

[richcarl32]

i am just trying everything that i can think of to sure up the FI system on this beast. she will crank but wont run more than a second or two. i have checked the afm and its resistance checks out and it does activate the fual pump whenever the flap is opened all the way. my next guess is the vacumm system. i am replacing the cracked elbow on the brake hose to the decel valve. the oil breather seals and i was told to also check the valve cover gaskets and the push rod tube seals. so that is what i am doing.
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Richard Carlton
78 Bay
2.0 L FI

[BIGTSV]

Any auto parts store will have high temperature engine paint, I ended up using Ford gray because I could not find white. Just cover the tube and seal area enough to give it a good coat.
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1989 VW White Star
English made DR Martens

[ChiTwnVW]

[VWLover77]

[josh]

Pushrod tube seals are an oil leak issue, not a vaccum issue. If they leak oil yes replace the seals, but if you have a driveability or performance issue, look elswhere.

[richcarl32]

it will not run even at full throttle. it will only crank and run for one second a the most. then it dies. dies dead, dead, dead! i can crank it a couple of times in a row and then i will have to let it sit for a while to crank. it acts as if it is flooded. after i let it sit for a couple minutes, it will crank again but not run.
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Richard Carlton
78 Bay
2.0 L FI

[josh]

Do you have a Bentley manual?

If not, get one.

There is a very systematic aproach to testing all of the components of the fuel injection in that book.

That book also states that most problems are not caused by the fuel injection system, which is true.

Only after the engine and ignition system are confirmed to be in perfect working order, should the fuel injection be suspect.

And if you have to let it sit before you can crank it again you need to charge the battery.

[notsobigkahuna]

i have done the seals on my bus 3x - everytime the same. the first 2 were done with viton seals and they lasted roughly 3000 miles each. the 3rd time i got the green ones from a vw dealer - 25 k and not a drop. i was told this by an old vw guy in vermont - get the green ones from the dealer. wish i had done that the 1st time. they aint cheap but its an awful job to be doing over and over

k

[germansupplyscott]

the seals we sell are the same as the dealer ones only less $. they are made by victor reinze.
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SL

[Tram]

If I had to guess, I'd say that only the cold start system is functioning. Either that, or your fuel pump runs for a second, then quits. First, check your fuel pump and fuel pressure. If that is good, the start checking the wiring and relays. Also, check your vacuum system as suggested previously.
A common item that causes this is the little ground wire that grounds right at the double relay. Put a new end on it, and make sure it's REALLY GROUNDED.

It ain't pushrod tube seals.
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Немає виправдання для війни! Я з Україною.

[richcarl32]

new fuel pump, and fuel pressure is okay.
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Richard Carlton
78 Bay
2.0 L FI

[Tram]

[twinfalls]

Is the "paint the pushrod under the seal" trick, a usual proven procedure ?
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Stock 1974 US Westy, AW-A 1800cc dual carbs. Twin Falls is my favorite site on the Churchill river in Manitoba.