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Oil Leak Behind The Crank Pulley On A 4agze Engine

Featured Replies

got a bad oil leak behiind the crank pulley and it sits on the silver part above sump behind pullet but i can't find where it comes from???

any ideas where it is coming from any1???

my guess is

crank seal(front)

or

cam seal dripping down the back of plate behind the pulleys that bolts to block and ends up on bottom

 

any1 had this leak before and what was it

i have cleaned area and still can't find where it comes from cause the plastic cover is on top of the location of oil

 

any1

 

thanks

its very likely to be the crank seal, its cheap to change but a little tricky to do. To get to it you will need to remove your belts, crank pulley, timing belt drive pulley, belt end plate, etc...

  • Author
its very likely to be the crank seal, its cheap to change but a little tricky to do. To get to it you will need to remove your belts, crank pulley, timing belt drive pulley, belt end plate, etc...

 

have you done this before???

was it leaking in the same spot???

will the stock 4age part no be the same to buy from toyota???

and lastly how does it pull out after i pull the stuff out to get to it???

 

sorry for all the questions but want to get my head around it before i rip it all appart

becasue its in a rwd ill have to pull radiator out 1st before i even start to pull belts,pulleys and plate etc off

 

thanks

Could also be leaking from the rear of the oil pump to block area (current problem I have with my 4ac motor). As Sam Q said you need to remove all your belts, crank pully etc to get to this to replace the crank oil seal and you will have to do the same amount of work to fix the oil pump leak if this is what your problem is.

I had an oil leak that covered the oil pump, Found that the cam seals were stuffed.

have you done this before???

was it leaking in the same spot???

will the stock 4age part no be the same to buy from toyota???

and lastly how does it pull out after i pull the stuff out to get to it???

 

sorry for all the questions but want to get my head around it before i rip it all appart

becasue its in a rwd ill have to pull radiator out 1st before i even start to pull belts,pulleys and plate etc off

 

thanks

 

I have no done this before no,

 

But I know my engine is leaking from here slowly and I know its common on 4a engines

 

the aluminium housing unbolts and then you knock the rubber part of the seal out. They are available off the shelf in Kelpro or ACL, cheap as.

 

Even if you can avoid it take the radiator out, makes life so much easier and no accidentle punctures

  • Author

there the 3 things i thought it could be

cam seal i do see oil on top of the inlet cam side between cam cover and backing plate

crank seal(not sure how to check)

oil pump seal(not sure how to check)

is there anyway to check which 1 it is ??????

but i spose for all three things listed the backing plate belts etc all have to come off

and if theres oil on back of the backing plate it would be the cam seal

and I'm not sure how i will tell if its the crank seal or the pump seal cause there in same location arent they???

Edited by demotorsport

there the 3 things i thought it could be

cam seal i do see oil on top of the inlet cam side between cam cover and backing plate

crank seal(not sure how to check)

oil pump seal(not sure how to check)

is there anyway to check which 1 it is ??????

but i spose for all three things listed the backing plate belts etc all have to come off

and if theres oil on back of the backing plate it would be the cam seal

and I'm not sure how i will tell if its the crank seal or the pupm seal cause there in same location arent they???

 

Your oil pump seal is your crank seal or were you talking about the gasket behind the pump?

just change them both, should be a cheap enough.

 

Or you could just do what everyone else does.. ignore it

  • Author
just change them both, should be a cheap enough.

 

Or you could just do what everyone else does.. ignore it

 

 

lol...been ignoring it so far...lol...

 

i was thinking there is a seal behind where the pump bolts up to block but can't say for sure cause havent had it off yet

spose when its appart ill do all 3

i got the cam seals with the timming belt kit

ill buy the other seals before i start ripping appart

spose ill ignore it till after i get the car tunned for now and attack it after that providing its still allive...lol...

 

just don't get how it leaks so much just sitting there without starting the car cause most of oil is in the sump

leaks heeps now and haventy started it for over a week and i keep wipping it

Edited by demotorsport

  • Author

does the sump have to come off???

and is there a way around not taking the engine out just to get sump out on a rwd casue of the crossmember???

it looks like the pump housing is bolted to the sump

  • Author

pulled appart today

took the front crank seal(pump seal) off

..........................................

just want to confirm if the seal has same part no. as the 4age smallport??????????????????/

..........................................

and where on this site has 4agze tention specs for engine such as head bolts caps etc etc etc??????????????

.......................................

 

thanks

pulled appart today

took the front crank seal(pump seal) off

..........................................

just want to confirm if the seal has same part no. as the 4age smallport??????????????????/

..........................................

and where on this site has 4agze tention specs for engine such as head bolts caps etc etc etc??????????????

.......................................

 

thanks

 

Refer to PM.

  • 2 weeks later...
  • Author

crank/pump seal is done same as the cams seals so pump stays on

so far so good no oil leak there anymore

 

now the new cam seals are pissing out so bad it leaves a puddle of oil under the car(not drivable)

 

can some1 confirm i have correct cam seals with a part number PLEASE?????????????????

and any tricks or do's and don't wwhen doing installing the cam seals???????????

 

cheers

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