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How will I fix my MIT.6d15 engine there is no oil supply on its rocker arms?

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Replace the oil pump

Posted on Apr 10, 2015

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Ok so ik I'm posting allot haha but does anyone know where or how to adjust lifters just found out mine r just now needed adjustment in near mount Vernon WA or a price at least haha


In engines with rocker arm valve systems, the procedure I'm familiar with is to remove a rocker arm cover, and (one at a time!) while the engine is running, slowly back off the rocker arm retainer nut or bolt just until you hear the lifter tapping, then tighten it a quarter turn. If you can identify a lifter that is already tapping, tighten its rocker arm slowly until it stops tapping, then adjust it. Do not over-tighten! This can damage the engine.

Listen carefully to how the engine sounds; if it starts to stumble when you tighten a loose rocker arm, you've gone too far. If you cannot get the engine to run well without tapping, you may have too much wear in the valve train and may be due for a head overhaul, or you don't have adequate oil pressure in the lifters in question.
Repeat until all rocker arms are done. Replace the rocker arm cover using a new gasket, then (in a V-engine), repeat the procedure on the other side of the engine.

Wearing safety goggles, or better yet, a transparent face shield, is strongly recommended. Sometimes oil will squirt out a considerable distance from the lifter side of the rocker arm during adjustment, and the direction is not readily predictable.

Apr 03, 2015 | Cars & Trucks

1 Answer

How much oil should be pumped to the rocker arms


In the case of an ohv engine, lubrication to the top of the engine is often regulated so relatively little rises to fill the hollow rocker shaft and then ooze out and trickle along the rocker arms.



In the case of an ohc engine a great deal more oil is needed and if the design doesn't provide a large oil reservoir around the camshaft, which most do not, the oil is needed very quickly after start-up and so the supply tends to be copious and regulated only by the size of the oilways.

ohc engines have such a vigorous supply of oil to the valve gear it is impossible to run most of them without the cover for the purposes of checking, for more than a few seconds.



ohv engines often need to be run without the cover for maintenance and while a few spit drops of oil skyward most do not.



I hope this helps...

Feb 06, 2015 | Cars & Trucks

1 Answer

Motor knock sounds like rocker arms or lifters?


If your engine is knocking the sound with be at the bottom of your oil pan but if you have lifter or rocker arm problems the sound will be at the top of your engine. One other thing you said your car has 315k it might be time to change your oil pump.

Mar 25, 2013 | Chevrolet Silverado 2500HD Cars & Trucks

1 Answer

I have no oil pressure in the car we pulled the valve cover today and found 6 of the rocker arms were not installed, we havent pulled the other cover yet however with this not installed would this affect...


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.

Jan 29, 2011 | 1991 Mitsubishi 3000GT

1 Answer

Engine is making a clicking sound, when I remove oil cap I can see one valve is not moving with engine running


Remove valve cover and inspect rocker arm, bolt , pushrod. Rocker arm bolt may have pulled out. It can be fixed with a heli coil.

Jan 16, 2011 | 2003 Buick Rendezvous

1 Answer

Loose rocker arms,does it have hydrolik lifters?or worn out cam shaft


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.

Dec 29, 2010 | 1997 Jeep Tj

3 Answers

89 Ranger 2.9L 150k mi. Lifter noise, power lose, oil pres zero


the lifter noise might have been a bearing going bad or a piston ring. if you lost power you probably lost compression on one cylinder. Try checking your compression with a compression tester screwed into your spark plug socket. here is a site with a procedure.
http://www.automedia.com/Engine_Compression_Test/ccr20050801cc/1

May 18, 2009 | 1988 Ford Ranger

1 Answer

Changing Camshaft seal


1. Install the camshaft after lubricating the journal of the camshaft with engine oil. 2. Install the camshaft bearing caps.a0b9a5d.jpg
3. Install the ignition coil. 4. Install the rocker arm and rocker arm shaft. Refer to "Rocker Arms and Rocker Arm Shafts" section. 83e48db.jpg 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. bda0592.jpg 6. Install the camshaft sprocket and tighten the bolts to the specified torque. 2cbbe98.jpg

May 05, 2009 | 1996 Hyundai Accent

1 Answer

One rocker arm not getting any oil


5.0L engines oil the rockers through the pushrods and lifters check those. check pushrod first to see if it is stoped up.

Jan 25, 2009 | 1983 Ford Mustang Hatchback

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