The photograph to the left shows a new o-ring fitted. Be careful not to fit the o-ring to the next lower groove by mistake as this will not allow the injector to seal and engine oil dilution will continue.
The o-rings can be readily purchased from independent suppliers at online shops and also eBay.
It is very advisable that the copper washers are also changed at this time too, as failing to do so may caused blow-by of cylinder gases through the injector tube, resulting in poor cylinder compression and running.
Some people chose to place the new copper washer on the end of the injector with the tiniest amount of automotive grease before re-inserting the injector into the tube. Other people drop the new copper washer into the tube first, then lower the injector into the copper washer once centralised with a screwdriver.
If you choose to drop the copper washer into the tube first, be careful that any resistance felt in the final part of injector insertion is not due to a misaligned copper washer, rather than the resistance of the o-ring sealing and tube. Do not use excessive force as this will damage the copper washer when it is struck by the injector point.
You may also wish to change the rocker cover gasket whilst carrying out this job. However, bear in mind that there are two types of pattern and so you may have to seek advise from your supplier to ensure you obtain the correct part. Basically, one pattern has an additional little piece of material at the front part of the gasket.
NB. Check the condition of the cylinder head injector tubes as they have been known to crack, particularly at cylinder number 2.
It is very advisable that the copper washers are also changed at this time too, as failing to do so may caused blow-by of cylinder gases through the injector tube, resulting in poor cylinder compression and running.
Some people chose to place the new copper washer on the end of the injector with the tiniest amount of automotive grease before re-inserting the injector into the tube. Other people drop the new copper washer into the tube first, then lower the injector into the copper washer once centralised with a screwdriver.
You may also wish to change the rocker cover gasket whilst carrying out this job. However, bear in mind that there are two types of pattern and so you may have to seek advise from your supplier to ensure you obtain the correct part. Basically, one pattern has an additional little piece of material at the front part of the gasket.
NB. Check the condition of the cylinder head injector tubes as they have been known to crack, particularly at cylinder number 2.
