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General Information => Troubleshooting => Topic started by: dieselwabbit84 on April 16, 2012, 07:13:03 am
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hi guys. i picked up an 84 2-door rabbit not long ago with a 1.6na diesel.
i replaced the head gasket and timing belt and some other stuff as the gasket was leaking a little bit. still ran great, though.
anyways, i got it all back together and timed, but now i notice the oil light stays on. i pulled the sensor out of the head and started the engine up and oil doesnt shoot out, but dribbles. it is a little cool this morning, but how much pressure should be at that point?
also...when i unplug that sensor, the light goes out. when its plugged in, it comes on.
any help is much appreciated.
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Is the head gasket upside down?
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no, sir. notches are (facing engine) driver's side front. to the right of the hump on the head.
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different brands have notches in different spots... some 1 n 2 and others 3 n 4...
get real gauge... test the op reading..
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fml.
guess i gotta tear it back down. think i can reuse the gasket? or should i just get a new one? and i know ill need new head bolts. might just get studs like i originally wanted to.
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fml.
guess i gotta tear it back down. think i can reuse the gasket? or should i just get a new one? and i know ill need new head bolts. might just get studs like i originally wanted to.
ive successfully, along with a few others also, re-used head gaskets AND bolts, as long as you only re-use the bolts once..
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fml.
guess i gotta tear it back down. think i can reuse the gasket? or should i just get a new one? and i know ill need new head bolts. might just get studs like i originally wanted to.
ive successfully, along with a few others also, re-used head gaskets AND bolts, as long as you only re-use the bolts once..
i haven't even done the final torquing (after the first heat cycle OR after 1000miles) on them. i should be ok?
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I was just wondering if that the gasket could be upside down. I know some mfg that place the notches/holes on the opposite side as VW did. If it is a possibility that you did put it on upside down then I would do as CRSMP5 suggested.
I would take the vac pump out, connect an oil pressure gauge to that port you found on the head, and spin the oil pump with a drill rated fro 2,500 rpm or so. Could you should see at least 40psi.
There are other possibilities that it could be. Something as simple as a clogged oil filter or mixed up wire to the sender...doesn't have to be upside down HG. That would be the most serious for me though.
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I was just wondering if that the gasket could be upside down. I know some mfg that place the notches/holes on the opposite side as VW did. If it is a possibility that you did put it on upside down then I would do as CRSMP5 suggested.
I would take the vac pump out, connect an oil pressure gauge to that port you found on the head, and spin the oil pump with a drill rated fro 2,500 rpm or so. Could you should see at least 40psi.
There are other possibilities that it could be. Something as simple as a clogged oil filter or mixed up wire to the sender...doesn't have to be upside down HG. That would be the most serious for me though.
i took the valve cover off and ran it for maybe half a minute. no oil. and i also ran it with that sensor completely out of the head. if theres supposed to be some decent psi there, it would have shot out, but it didnt. the possibility of the gasket being on upside down is there. wont know till i check it. wiring is fine, exactly how it came apart.
i dont THINK i put it on upside down, but who knows. i was so sure the HG was supposed to go on the way i put it maybe i did and didnt even think to check.
i had no idea at all that manufacturers did that (changed the location of the notches)
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What are you running for an oil filter? If it is fram buy a different one. I guy on here last year had oil pressure issues and replaced the filter and it worked. I am in the he-man fram haters club, so if it is orange I would replace it anyway. They are cheap and I wouldn't want you to pull the head unless you have to.
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Did you do a new oil filter when you put new oil in after the HG??
I have had filters fail out of the box and not allow any oil to the head.
Pretty sure that was me Lucas, had a FRAM fail.. replaced with MANN.
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OK, getting oil elsewhere? hows your vacuum pump look? could you pull the vacuum pump and make an adapter to put a drill on the oil pump itself? check oil pressure at the oil filter housing? lots of EASY checks first?
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What are you running for an oil filter? If it is fram buy a different one. I guy on here last year had oil pressure issues and replaced the filter and it worked. I am in the he-man fram haters club, so if it is orange I would replace it anyway. They are cheap and I wouldn't want you to pull the head unless you have to.
yea, it's a NEW fram. had a fram on it originally as well with no problems. this seems like an easy (and cheap) enough thing to try
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068115561E
Upgraded AHU filter that I use on my 1.6. On this page https://www.autohausaz.com/search/product.aspx?sid=sd4xvszwcutzo1555kanml45&makeid=800026@VW&modelid=1369661@JETTA TDI &year=1997&cid=20@Engine Parts, Seals %26 Gaskets&gid=5340@Oil Filter
I usually get 50.00 worth to pay for shipping. You being in TX might not be as bad of shipping. I always need something else for my car, but even if I don't I change the oil regularly enough I will buy 8 filters if nothing else.
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replaced the filter with a wix one. still the same.
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fml.
guess i gotta tear it back down. think i can reuse the gasket? or should i just get a new one? and i know ill need new head bolts. might just get studs like i originally wanted to.
ive successfully, along with a few others also, re-used head gaskets AND bolts, as long as you only re-use the bolts once..
i haven't even done the final torquing (after the first heat cycle OR after 1000miles) on them. i should be ok?
i would say that there is a good chance you can re-use them..
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I would now take 1 bolt out of the hold down for the vacuum pump and spin the oil pump with a drill. Get a gauge to monitor actual pressure at the head and then at the filter flange if you can. Compare numbers, if both report 0 then you have more issues. If you have pressure at the flange but not the head I would start looking at the HG again.
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unfortunately i dont have a gauge yet nor a way to spin the pump with a drill.
but like i said, with the sensor out it dribbles. barely anything. the oil filter does get primed though. and all was well before i did this work to it. i also replaced the oil pan gasket, and while in there, i made sure it was all clean when it went back together.
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I used a 3/8" extension to a 1/4" adaptor to a 1/4" extension. I chucked the socket end of the extension into the drill and way at the other end of the mess put the 3/8" square opening over the oil pump drive. It may have been 1/2" drive to 3/8" but you get the idea. An oil pressure gauge can be had at most any parts store, and adapt it to m10-1.0 thread and you are good to go.
OR take off the head...
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:-[
head gasket was on upside down.
thanks for the info guys. had NO idea that aftermarket gaskets wouldnt be the same as factory. Guess i should have inspected it closer before installing. Waiting for a new head gasket (will be here tomorrow) because im paranoid when it comes to reusing them. I think i'll be alright when it comes to the bolts as I never got to the final torque specs of them.
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:-[
head gasket was on upside down.
thanks for the info guys. had NO idea that aftermarket gaskets wouldnt be the same as factory. Guess i should have inspected it closer before installing. Waiting for a new head gasket (will be here tomorrow) because im paranoid when it comes to reusing them. I think i'll be alright when it comes to the bolts as I never got to the final torque specs of them.
ive re-used gaskets with thousands of miles on them, without issue. yours didnt even get a full heat cycle, it would have been 100% fine, can just about guarantee it..
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I'll save it for next time.
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here's another question. how easy/difficult should it be to rotate the IP?
there's only 3 bolts that hold still, correct? two on the IP side and the one nut on the belt side?
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Nope there are four bolts. Two on the top and the one that you get at from way back of the pump down low. And then the one up front by the belt area. I loosen them all when twisting on the pump and sometimes I have to break the nuts on the lines free as well to take the torque off of them. Should make that a practice anytime you twist the pump.
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good to know. was under the assumption it was just the three.
Bad thing is i'm a mechanic. but this is the first 4cyl diesel ive worked on so its a learning process. But hey, it never hurts to learn new things!.
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Just an update. Got it running yesterday, and actually better than I had it the first time :o
thanks a lot everyone, I really appreciate the help.