Question about 2003 Harley Davidson XLH 883 Sportster

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On new rocker covers there is a rubber gasket to limit flow of oil - on what side of cover does it go on outside or center carb side

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I think what you're talking about is the "umbrella" in the center rocker box section. The new umbrella pulls into the rocker box from the bottom side leaving the "umbrella" on the top side of the center section.

The umbrella always lines up with the "head breather ports" in the heads where the large bolts for the air filter element go. Towards the carb side of the head.

Good Luck

Posted on May 09, 2010


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2007 ford explorer sport trac 4.0 v6 all 3 spark plugs on passenger side are coated in oil doesn't smoke 2nd set of plugs in 3 months driver side plugs are fine im tired of guessing anyone know?

comment exactly what you mean when you say --covered in oil
1-- is they covered in oil on the outside around the insulator and wires/ coils
2-- are the center electrodes black with oil and misfiring
if it the outside then replace the rocker cover gasket or if the plugs are recessed into the rocker cover , replace the oil seal under the plug tube in the rocker cover

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Order new Rocker Cover gasket for your Engine Code located at top of motor nameplate)
Drain Oil. 3 pints SAE 30
Remove OHV rocker cover 4 bolts carefully and remove rocker cover and toss old gasket. Clean rocker cover with a clean rag and set aside. Fetch standard feeler guage which has a .003" and a .005" available.
Exaust valve .005" is the top one and Intake .003" is the bottom.
First check the gap between the rocker arm and valve tip.
If they need adjusting then you will need star driver to slightly loosen the center star screw then use a 10mm or 3\8 ( i think )
To slighty adjust the outter bolt until its almost tight to feeler guage then at same time while holding the outside bolt, tighten the stardrive center until tight. It will still pull it in a bit is why I say "almost tight".
You will need to reinstall new OHV rocker gasket around the rocker pan, set the top 2 bolts to help align and you might need to shift the rocker cover upward while bolt it down so the bottom edge is high enough onto motor. Do not over tighten. Aluminum is soft. You may use some "weakest" loc-tite product but I never do.

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Leaking oil back side of motor

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it is the gasket and the spark plug oil seals on the valves cover ( rocker cover. ) Remove the cover and renew the rubber gasket and seals.

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Oil leaking into the plugs on my daewoo 98 wagon? it has regular oil changes every 6 months.

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Is there supposed to be oil in with the spark plugs

No this is not mormal. I am assuming you are saying there is oil on the outside of the spark plug and not on the electrode when you removed it. If you have oil on the outside of the plug your valve cover gasket is leaking. Try tightening the valve cover down ever so slightly. DO NOT over-tighten. If that does not work then the gasket will need to be replaced. Unless it is leaking lots of oil, you may just want to live with it as it is expensive to pay someone to replace the valve cover gaskets.

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