MGB, MG B, 1963: ENGINE OIL LEAK FIX FOR A PCV EQUIPPED MGB; HOW CHANGING MY OIL CAP FIXED OIL DRIPS 

Great video and really helpful, my Mom gave me her mgb GT in 2017, she bought it in 1977 when it was three years old (it's a 74 chrome bumper car). The oil consumption was 70 miles to the pint. The first thing I did was buy a compression tester. All four cylinders were all about 90psi. So I started to drive it as much as possible. Over a couple of thousand miles the blue smoke stopped coming out the back and the consumption reduced to about 250 miles per pint and compression pressures are now about 140psi per cylinder. Lots of oil leaks , so I cleared the breathers out according to a John Twist video. Instantly so much better and now we are doing 500 miles to a pint. I'm sure some unscrupulous mechanics would have told me that I needed to rebuild the engine. Anyway keep up the good work 👍

Also I love the Iris blue paint.

I had the same issue with oil leaks on my 67. One of the previous owners had deleted the PCV system. Like you, I went down the PCV rabbit hole on MGE. After replacing the system and filler cap, the leaks (the ones caused by lack of PCV) are gone. You have excellent lighting in your garage.

That lighter color really assists with how that engine bay presents and “ brightens” any relatable tasks as compared to my once owed dark blue, 3-wiper, chrome bumpered, low-n-go , wire wheeled 69’ Interesting videos and a great MGB! These cars are a blast to drive! At one time, I had hoped to acquire one with an overdrive unit and a hardtop option I did note that attentive maintenance of my brake master cylinder was a recurring issue And the cables and pivot points related to the heater controls benefitted from lubrication as the cables can function while “stretching” and not ideally functioning as they should - the interior heating levers appear to pivot open/ closed as where assigned to “heat”, but within the engine compartment the cables “ hang up” if not maintained / lubricated and therefore impedes heating properties to nearly zero Premium steering rack bushings made all the difference All too often drove with two passengers and also with the top down all winter long using a zipped up tonneau NE USA

Outstanding video and presentation.

We have an "Iris" too here in France, she's a 1964 iris blue but built in 1963 with her original 3 bearing engine. Love her. Very interesting vlog. Keep up the good worl.

I liked your laid back, studious presentation. By comparison, whenever I post anything about my MG, I think I sound almost insane!

Thank you for this informative video. I am in a situation now where I need to clean out th wire gause in the front inspection cover as I know I have pressure buildup. My car however is a 1977 with a conversion to carbs that are from the mid 1960's like yours. However I have a anti run on valve along with a charcoal cannister. When I get thsis fixed my mileage should change and leaks should become minimal. The added vacuum due to the more enclosed system I believe has contributed to a moderate decreas in mileage.

If I'm not mistaken the rear of the rear view mirror of that year was a golden color. My dad's 63 or 64 was. If you look in the moss color cataloge of the mirrors you can see what I mean. I originally thought it was from cigarette smoke,glade I didn't clean it. Have a 76 and 70 B. Working on them now, enjoy your videos. Thanks Warren from Vermont.

For anybody with experience of A and B series engines the need for the corect, and clean, oil cap is a given. Hardly a hidden fact.

Nice yard! Thnx for the video. Interesting stuff !

It's all about your crankcase venting. If you don't have your setup right it will affect your engine performance much like a vacuum leak. Which it can be as well.

Very good information many thanks, Mick MGB 1967.

Very good video Learned so much Thanks very much I have a ‘66 I just acquired in May Many things to do !

Thanks…"the cleanest engine bay I’ve ever seen . I’m in the process of replacing the tappet covers with a one piece unit from Basil Adams which is touted to seal much better .

Putting coil up other way is good idea to stop oil leaking out , never seen non vented cap might be an export thing

I will order a new "filter" cap for my '67 BGT based on your recommendations, mine is original and has over 130K miles so perhaps it's time.

Pure gold, thank you!!! My BGT engine doesn't have a PCV but I'm wondering whether a vented cap might still be beneficial in reducing crankcase pressure. I have a slight weep from the front pushrod cover. The emphasis is on "slight" so to date, I've avoided carb and manifold removal to fix it properly. Maybe next winter... Thanks so much for the timely warning to buy more parts than might strictly be necessary for doing this job. NZ is right at the end of a long supply line. Cheers, Geoff

UK cars don't have an "emergency brake", they do have a handbrake and a foot brake. The handbrake is intended to hold the care securely while it is stationary

Thanks for the information on the oil cap. Also you have two "rare" metal brake and clutch master cylinder canister metal screw caps. These are original. Usually replaced with white nylon plastic. Metal ones are available at "handsome" prices.

I would invest in a Bentley MGB Factory Workshop Manual. It is much more detailed and accurate than your Haynes Manual. 👍

Plastic fuel filter under the hood is bad news. Near the exhaust is even worse.

Great video! Did you have to drain all the oil to remove the side covers, or does the oil sit happily below in the sump? I have a 78 UK MBG which has no pollution control (wasn't required on UK models) mine has a strange metal oil cap, and seems to leak even from there. May check out replacing that.

Thanks for the video! Do you have a 3 or 5 bearing engine? I have a 3 bearing engine and I have a small oil leak.👍🏴󠁧󠁢󠁷󠁬󠁳󠁿

PCV valves, side covers and vented oil caps resources for MGBs: Excellent nformation on these site 👍👍👍 www.mgb-stuff.org.uk/cb.htm#ocap 👍👍👍 www.mgb-stuff.org.uk/enginetext.htm#breathing 👍👍👍 mgaguru.com/mgtech/engine/cv102.htm 👍👍 www.mgexp.com/article/mgb-pcv-systems.153

I have a 63 mgb it does not have the pcv valve, i am pretty sure they started pcv valves in 1965.