What is this plug?!

[Florence the Komet]

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Hi all, when doing a service yesterday (thanks for all the great info on here!) I noticed that some kind of plug has come off.
I don’t know what it is called or what it does, or whether I should be worried. It looks like a previous bodge as there is electrical tape around the plastic plug’s thread.
Can anyone advise me what is going on here, and whether I just need a new plug (if so what am I looking for?) or is the some kind of larger pressure/mice/Coronavirus underlying cause I need to attend to?
Thank you all. Hope the pic appears and is enough info...
Tom
2.1 DJ engine 5 speed manual


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[Jim San]

Looks like an inspection hole 'bung' to me and that its just fallen out and having a little lay down.
I'm sure more certain opinions will be on route soon.

[Florence the Komet]

Thanks Jim, well here’s hoping that’s what it is, so I can just plug it back in after it’s bit of time out!


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[Jim San]

Thanks Jim, well here’s hoping that’s what it is, so I can just plug it back in after it’s bit of time out!


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Yep. i think it is a timing mark hole. Have a look in the hole first - always worth a look to see if there is any obvious damage to the teeth.

[ZsZ]

With an automatic gearbox you can reach the flexplate bolts through that hole

[Syncrobaz]

Also handy to locate a bolt in the flywheel to stop it turning when undoing the crank pulley bolt.

[Florence the Komet]

Amazing thanks guys. I will not worry too much about it having popped off then. Lastly, can anyone point me to a replacement bung? Brickwerks only seem to have a diesel version, which i assume won’t fit...
Tom
2.1 DJ, 5 speed manual


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[Jim San]

As a temp measure (3 yrs ago) I made from a bottle cork (different engine) but a hole is a hole and a bung is a bung.
Will probably buy one when I get a job again

[ajsimmo]

...but a hole is a hole and a bung is a bung.

Time to resurrect the "out of context" thread?!

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