Where does oil enter rocker shaft to lube cam on 1.6 the rockers lube the cam. Where does oil enter rocker shaft. Single overhead cam

The torque specification for the rocker shafts on the 2001 Hyundai Accent with the 1.5L single overhead cam engine is 18-20 lb-ft. The proper torque sequence is as follows:

1. Tighten the bolts to 8 lb-ft in a crosswise pattern.
2. Increase the torque to 15 lb-ft, again in a crosswise pattern.
3. Finally, tighten the bolts to the full torque of 18-20 lb-ft, again in a crosswise pattern.

Make sure to use a torque wrench and follow the sequence carefully to ensure proper tightening and prevent damage.

Check the ignition timing, you may be a tooth out on the rocker camshaft, if it's an overhead camshaft.

There is no such thing as a rocker shaft. There is a cam shaft, rocker arm assembly, Rocker arm, lifter etc. If you are talking about the rocker arm assembly that bolts to the head, it is 58 Ft/lbs. If you are talking about the actual rocker arms, you tighten them till they contact the push rod and the valve stem and then you put oil control clips on so the oil does not spray and you start the engine. You tighten them down till the chattering noise goes away, then back them off 1/8 to 1/4 turn.

yes there is a seal on the cam shaft behind the water pump pully
undo that bolt
you have to undo the cam shaft to get to it .dont drop the lifters
19 nm for the can bearing bolts ..do not overtighten the two rocker cover bolts you can crack the rocker cover or split the cam bearing those bolts tight into
many say not to use silicon but because of the age of the car you need to use the blue silicone on the half moon the rocker gasket and the cam seal ..there are no online repair manuals for the tm-tp magnas ..the rocker covers can warp but rare

My manual shows an 8RC for 70 and 71 and an 18RC for the 72-74

18RC valve clearance HOT IN .008 EX .014 cold spec. .007 .013
Cyl head 72-82 Ft Lbs
Rocker caps 12-17 ft lbs
cam bearing clearance .001-.002
cam endplay .0017-.0066
oil tube 11-16 Ft Lbs

Hi,
are you serious? Aside from that question. If there are rocker arms missing it could affect the oil pressure. Are the oil feed holes in the area of each missing rocker plugged off?

Perhaps I had better back-track here. If the oil lube system has no restrictions in it then there will be minimal oil pressure developed. The oil pump will be pumping oil to the lower end of the engine and that will be where oil press if any will be developed.

The rocker area has drillings which restrict the oil delivery from the pump, however, the rocker arms themselves offer resistance to the oil supply and the oil must have enough flow and pressure to form a circle of oil within the rocker arm and thus keep it clear of the shaft. The oil flow goes through the rocker arm, and down over the valves and pushrods,(if fitted) and drops back down into the oil pan. Different set ups can be used, but that's a basic configuration.

The engine lubrication is designed with certain resistances, and they in turn affect the flow of oil and the pressure developed by the pump.

Good luck.

I assume you have the 4.0L engine. Your rockers are probably worn out where they contact the rocker pivot. I have seen this several times. It is due to low oil pressure. Replacing the rockers and pivots will help the problem with noise, engine not running properly, etc. but it will only do it again unless the low oil pressure problem is fixed. It usually requires replacement of the oil pump to fix it. While the oil pump is being fixed, the main and rod bearings should also be checked. I have done a couple of these where the rockers were completely worn out but there was no apparent damage to the main and rod bearings. I have also done a couple where all the bearings were trashed as well.

If it has push rods, you will find them under the rocker cover on the top of the engine, they are hiding under the rockers. The rods ride on a lifter that rides on the cam and then they push the valves down, and squirt oil all over everything, a spring brings them back up. The overhead cam eliminated all these extra parts. Lifters, rods, rockers. Hope this helps.

1. Install the camshaft after lubricating the journal of the camshaft with engine oil. 2. Install the camshaft bearing caps.
3. Install the ignition coil. 4. Install the rocker arm and rocker arm shaft. Refer to "Rocker Arms and Rocker Arm Shafts" section. 5. Using special tools, Camshaft Oil Seal Installer (09221-21000), press fit the camshaft oil seal. Be sure to apply engine oil to the external surface of the oil seal. Insert the oil seal along the camshaft front end and install by driving the installer with a hammer until the oil seal is pulley seated. 6. Install the camshaft sprocket and tighten the bolts to the specified torque.

Hello again,
Thanks for your response and further details, I have to say your unit it not one I'm too familiar with BUT all Engines are similar in many ways and I have done lots of Head rebuilds and gas conversions on Small & Big Blocks.Remember I'm across the Pond U.K.
O.K. Oil ways seem to be the problem here, I can't suggest much as I'm not looking at the Engine.
I can only summize.
I recently had a Cam seizure on a 4D51 Diesel Mitsubishi (Pajero/Montero) un-beknown to me the oil runs up the centre of the rocker shaft its is fed via the the Aluminium rocker shaft carriers. As this vehicle had suffered a Cam Belt break the Valves had ripped the whole Valve train off the top of the head, so clever Me Heli coiled the threads and on the last two had to use larger bolts.
I didn't realise I had blocked the flow of oil?????
So maybe your rocker shaft oil supply is blocked somewhere? possibly a shaft in back to front? or carrier cap on wrong base? I know we all make mistakes but sometimes it is really annoying when it is staring us in the Face and we just don't see it.
2 Heads?? eH!
Good Luck!
Please keep me updated, I'll do some more research and if not solved on this session please return with full description of engine and numbers etc.
Paul 'W'