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master tech
master tech, Toyota Mechanic
Category: Toyota
Satisfied Customers: 5427
Experience:  have 5 years of toyota service work
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1994 toyota pickup: cover gasket..The oil leak is..pully..crank shaft

Customer Question

I have an oil leak in the timing cover gasket on my 1994 toyota pickup. Will I need to remove the head to replace the gasket? The oil leak is pretty bad.

It looks like all I need to do is remove the pully from the crank shaft and then I cna remove the cover and install the new gasket. Is this correct?

Also can the oil pan be removed with the engine still on the engine mounts, or do I need to remove the engine from the mounts and jack it up in the engine compartment to get the oil pan off?

Thanks Customer
Boiling Springs SC
Submitted: 3 years ago.
Category: Toyota
Expert:  master tech replied 3 years ago.
Chat Conversation Started
master tech :

hello welcome to the site, is this a 4x4 or 2 wd

master tech :

the timing cover can be removed with out taking the head off yes

Customer:

This is aXXXXX/p>

master tech :

ok this will make removing the oil pan very tricky.

master tech :

all you need to do is remove the front pan bolt's to allow the removal of the cover.

Customer:

Here is my dilema. I think that the oil pan is leaking where it meets the timing chain cover. In addtion the Dirt bag that sold us the truck reemed the oil pan bolt head and I was hoping to drill out the plug on the work bench. So how hard is it to remove the oil pan?

Customer:

I meant to say oil pan drain plug

master tech :

ok

Customer:

I am still here on line

master tech :

if your tring to install a oil pan plug correct in addition to fixing the oil leak correct ?

master tech :

or this is a oil drain plug issue

master tech :

the oil drain plug can be fixed in the truck. they sell several repair kit's for damaged drain plug threads

Customer:

Well I have an oil leak in the timing chain cover at the oil pan and the plug is stripped as well so I thought I would do both at the same time

master tech :

i got you now

Customer:

Yea the plug is stuck in the pan

Customer:

Labor is not a problem and neither is time since I am teaching my son how to fix his truck that he bought from his grass cutting money so he could drive to High school and work

master tech :

well these can be done but it's been a long time since i removed a pan on a 4x4 model but i know i have you will have to over look the pan and im pretty sure it clears the diff. you will have to unbollt the front cross bar just below the oil pan it has 4 bolts

Customer:

Ok

Customer:

I am assuming that i do not need to take the head off

Customer:

Also will the diff cause a problem?

master tech :

no

Customer:

I am not sure If I have to lift the engine off the mounts

master tech :

i just looked and my service is calling for unbolting the mounts to allow the engine to be jacked up a tad to clear

Customer:

Is there any other consideration when lifting the engine off the mounts

master tech :

just lift a little to allow any clearence needed .

Full Size Image

Customer:

Also I am a little concerned about taking the main pully off of the truck. What precaution do I need to take? I was going to use an impact wrench

master tech :

im trying to remember and i dont think i had to do anything like that when i did them

master tech :

thats fine.

master tech :

just make sure you don't let the crank pully rotate.

Customer:

I just need to mark the pully right?

master tech :

these i do know are very tight

Customer:

Ok how do I stop it from rotating

master tech :

all you have to do is bring it up on TDC and you will be fine

master tech :

holding it by hand will be plenty ,

Customer:

TDC? What is that

master tech :

let me get some info for you

Customer:

Ok

master tech :

top dead center (TDC)

Customer:

I saw the skematics and

Customer:

Ok I got TDC

Customer:

any advice on getting the plug out of the oil pan?

master tech :

well since your removing the pan drill it out or tap it out from behind

Customer:

I have tried every type of specialty wrench you can imagine, but the dog who owned it before us had already stripped the head off

Customer:

Ok from behind, Would you heat it?

master tech :

Full Size Image

master tech :

if the head is just rounded off then use a pair of vice grips

Customer:

Vice gripps are not getting it off

master tech :

hmm

master tech :

how much of the bolt head is their ?

master tech :

are you using a curved jaw or straight ?

Customer:

I would love to leave the pan on and just put the gasket on after dropping the pan

Customer:

Curved

Customer:

There is a good amount of head

master tech :

ok this is just a battle of brute force to get these to lock and break it loose

Customer:

Yep and I may just need to buy a set of super sized grips

master tech :

at my dealer i run into this a few times and i have to get a bite on the base of the plug.

master tech :

i will say this since you have the timing cover off it's smart money to but a chain kit and replace the guides and the chain.

Customer:

the base is too thin to get a hold of on this one.

Customer:

I even used a bar

master tech :

i bet the guides wil lbe broken

master tech :

hmmm

Customer:

How much are guides and chain any Idea

Customer:

It looks like I will have to remove the head to get to the chain

master tech :

no since your removing the pan you wont have to.

Customer:

Does the chain cover go up under the head?

master tech :

even then i never removed the head to replace the chain

Customer:

Ok

master tech :

the timing chain kits are cheap on line

Customer:

I will definitely need a kit an a set of gaskets

master tech :

yes the chain goe up through the head

master tech :

yes honestly i would replace the chain and guide set

Customer:

Ok We will try to get the oil pan off first then worry about the chain if we have to, but I am almost sure that the leak is at the junction of the chain cover and the oil pan cover gasket

master tech :

well i do know these have oil pumps that leak all the time. and will run down the front and look like the cover is leaking

master tech :

first step is to steam clean the area real good and then recheck for the leaks

Customer:

I will take a look at this as well

Customer:

we have cleaned it up already and it is coming from the bottom of the engine

master tech :

this would be far easier then removing the timng cover

master tech :

near the pulley ?

master tech :

or just behind ?

Customer:

Looks like below and behind, you can see where the dirt bag put some sealer over the leak

master tech :

if you look at image 7 on th directions i sent you will see the bottom of the crank

master tech :

hmm

master tech :

how far behind the pulley about 3/4"

Customer:

yes 3/4

master tech :

ok i have a feeling the oil pump is leaking

Customer:

I have not tried to spot the oil pump where is it on this engine?

master tech :

i would remove the crank pulley and then remove the 6 bolts directly behind the pulley and then slide the cover off and check the o rings i bet these are rock hard

Customer:

Ok

master tech :

look at the directions i sent and look at step 7 at the bottom of the cover their is 6 bolts holding a small cover

Customer:

Is this not also the chain cover?

master tech :

i did so many of these in the past

master tech :

its part of it

master tech :

the oil pump is housed in the timing cover

Customer:

Ok because I bought a new water pump as well

Customer:

is there a gasket around the neck of the oil pump (like a seal ring)

master tech :

ok

master tech :

well i honestly think this is the oil pump leaking

Customer:

and the fix is a new oil pump or just the gaskets on the chain cover?

Customer:

It is leaking oil really bad, but only on the road

master tech :

Full Size Image

Customer:

Ok I will go get a new ring,

Customer:

Any advice on the plug stuck in the oil pan?

master tech :

keep trying

Customer:

Do you want me to keep this open and let you know how it went or accept now? You have been very helpful.

master tech :

i wish i had a better solution on the drain plug

master tech :

after you accept you will still be able to contact me on this

master tech, Toyota Mechanic
Category: Toyota
Satisfied Customers: 5427
Experience: have 5 years of toyota service work
master tech and other Toyota Specialists are ready to help you
Expert:  master tech replied 3 years ago.
Chat Conversation Ended

If you are still working with your Expert on this question, you can post additional replies and receive additional information on this page.  If you received a satisfactory answer in Chat, you can accept the chat conversation above.
Customer: replied 3 years ago.

Hey I just wanted to let you know that the leak was at the oil pump. Also I got the plug out of the oil pan by taking the truck to a muffler shop and welding a bolt to the plug and then just putting a bigger wrench on it.

 

Thanks

 

Customer/p>
Expert:  master tech replied 3 years ago.

nice that great news.

please take a moment to leave me some positive feed back

Dino

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