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Changing Rocker Cover Gasket on
a 20VT |
By David Mattison |
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Before
you start, have a torx 40, and a 5mm hex ready. I used a torque wrench to
undo the bolts and then a drill with adaptor to get the bolts out fully. You
will also want the new gasket and O-rings ready. These are available from
Alternative Autos for under £10. If you have not already replaced the fiat
clip, you may also need a jubilee clip for the oil breather pipe. To
start, locate the 3 torx40 bolts holding the coil cover on. Remove the coil cover. Next
disconnect all the coil packs. This can be done by pressing the thin metal
spring then pulling the connector of. Then bend all the wires together out of the way of the rocker
cover. |
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Now undo
2 the bolts holding each of the 5 coil packs and remove the coil packs to
expose the spark plugs below. You want
to put everything you remove back into the same place that it went. To ensure
this, I placed all the items I removed from the engine down according to
where they came from. Then when it came to reassembly, I knew where
everything went. Now
remove the oil breather pipe hose (1 below). For some this will just be
slackening the Jubilee clip. For others you may have to butcher the Fiat clip
first. |
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Remove
the grounding wire (2). This requires a 5mm hex driver and on mine required a
wrench. Next
undo pull te cable loom out of the plastic clip and undo the two 10mm bolts
underneath. |
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Now
remove all 12 of the torx bolts holding the rocker cover down. I started at
the bottom left, and went along, then along the top, then finally the middle
four. Not sure it makes any difference though. When the
bolts are all off, the rocker cover should be moveable. You can remove it by
lifting from the left and sliding the right hand side out from under the
induction pipe. |
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When I
took off the engine, mine was very mucky, and there was oil where the gasket
and O-rings met the head. I spend a bit of time tidying up the areas where
the gaskets went. You may
want to check around, especially the four corners and on the left hand side
where the engine rises up that there is no ‘gunk’ or old bits or gasket
there. I used a cloth with a little turps to clean these areas. Don’t use any
metal implement to ‘clean’ the cover, otherwise you may scratch the head. Remove
the old gasket and O-rings, then and put in the new ones. Now do
everything above backwards. |
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I also
spent some time cleaning the rocker cover. I used wd40, then soap and water,
then finished off with brake cleaner to ensure the cover was completely free
of water.
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