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(Post Link) post #1 of 18 Old 27-01-08 Thread Starter
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Engine oil Leak after service

Hi Guys,

Everytime after service my 156 drips oil from the nut that they remove to take the oil from.

I always have to drive back to get them to tighten it up. I'm worried that the thread's on the nut is lost or the thread on the block which the nut screwed into is damaged. How can something like this be repaired if so how much does it cost usually ?

Thanks in advance.
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Re: Engine oil Leak after service

Helicoil insert? Couple of hours labour, plus the materials used, maybe?:
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Re: Engine oil Leak after service

hi heli coil is a good option,but i use a tap slightly larger than original thread then use larger dolt with plastic washer, sorry i cant remember size of tap or bolt, il check tomorrow at work, the sumps do strip quit often if care isn't taken,and can be expensive to replace.
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Re: Engine oil Leak after service

It might be that they jhave just forgotten to replace the copper washer.
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Re: Engine oil Leak after service

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Originally Posted by symonh2000 View Post
It might be that they jhave just forgotten to replace the copper washer.
In my experience most garages (not only Alfa) almost never replace the washer and usually only overtighten the plug. As I am changing oil by myself, I went to garage to buy only original oil filter and the washer. They couldn’t even find it in 15 minutes and came back to me they are out of copper washers... They are changing oil on many cars every day.... Do they replace washers? What you think?
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Re: Engine oil Leak after service

The later sealing washers have a synthetic insert, rather than the older solid copper types, which were just plain. Can't remember the patent name for them, Ross and the boys gave me the name way back, but it slips my mind at present, like most things do!: Never had a drip, or replaced the sump plug, apart from the original starred one, which was gored badly. That over a period of about eight oil and filter changes. The later hexagonal plug for a wrench, has been no problem, at all.:
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Re: Engine oil Leak after service

Sump washer Part number is A0055196309

Just bought one!
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(Post Link) post #8 of 18 Old 28-01-08 Thread Starter
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Re: Engine oil Leak after service

Any idea what size it is ? As there seem to be a number of size available I'm not sure which one to get.

Sizes: 1/4'' (30 pieces), 5/16'' (25 pcs.), 3/8'' (20 pcs.), 7/16'' (15 pcs.), 1/2'' (10 pcs.), 5/8'' (10 pcs.)

Thanks
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Re: Engine oil Leak after service

HI i purchesed pack of 10 today il check part no and past it on tomorow,
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Re: Engine oil Leak after service

I have re-used them in the past. I know its not ideal practice though, but as I didn't have a replecement I was in trouble..

I cleaned it off, warmed it with a blow torch until it was red hot and dropped it in cold water, so that it was annealed.

It didn't leak a drop.
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Re: Engine oil Leak after service

The later ones need just nominal torque to seal them.: Sure, the cherry red, cold water plunge annealing, softens the copper ones for re-use, so I never scrap them, but the later ones guard against thread pulling/stripping, imo.:
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Re: Engine oil Leak after service

Quote:
Originally Posted by chickiboy View Post
hi heli coil is a good option,but i use a tap slightly larger than original thread then use larger dolt with plastic washer, sorry i cant remember size of tap or bolt, il check tomorrow at work, the sumps do strip quit often if care isn't taken,and can be expensive to replace.
Hi chickiboy
Can we know what size it is?Many Thanks
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Re: Engine oil Leak after service

Those bloody sump plugs..
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Re: Engine oil Leak after service

It's the hard male,Boring into the soft female, which makes it fail, if you get my drift! Gently does it, treat them with care, soft and caressing like? No Gorilla tactics,please!
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Re: Engine oil Leak after service

i have a dripping 147 - forgot to change the washer. redoing the oil and filter today. what a waste.
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Re: Engine oil Leak after service

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Originally Posted by alfa-NI View Post
i have a dripping 147 - forgot to change the washer. redoing the oil and filter today. what a waste.
You should be able to re-use the oil if you empty it into a clean container. I have done this myself before after I forgot the washer..
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Re: Engine oil Leak after service

Better to have a wee drip, then give it an extra nip, rather than crush and overtighten? Worried about it falling out? Not had that happen even once to date, since '57, when I first started changing oil and filters.:
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Re: Engine oil Leak after service

i wonder how many people who think they have high oil consumption actually have a leaking sump plug. many modern day alfisti dont service their own cars (we call you the plastic alfisti ) so its very unlikely the sump plug washer will have ever been replaced.
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