smokin kombi literally

Have noticed lately that my bus when i brake and decelerate to stop at lights smokes (blue so burning oil) up quite a bit and drops right off once engine comes down to idle, are the valve guides worn so to speak or is it the valves themselves need re-seating, just done some maitenence and back left spark plug is only one showing any form of build up, tappet clearence is in spec, want to know before i get a mechanic to over charge me . don't know enough yet about my bus to go doing things i am unsure of and the like.. Help before i make a mechanic wealthier , ideas anyone or posts i can look at to fault find. Some one help an idiot (learner i mean)

valve guides, there is no oil involved in the valve seats, the only place the oil in that area can come from is the guides.
how is the van breathing? remove breather hose (put it in an empty milk carton) go for a spin, then see in theres any oil in the carton, your rings might be giving you blow back (not as much fun as it sounds).

shero wrote:Have noticed lately that my bus when i brake and decelerate to stop at lights smokes (blue so burning oil) up quite a bit and drops right off once engine comes down to idle, are the valve guides worn so to speak or is it the valves themselves need re-seating, just done some maitenence and back left spark plug is only one showing any form of build up, tappet clearence is in spec, want to know before i get a mechanic to over charge me . don't know enough yet about my bus to go doing things i am unsure of and the like.. Help before i make a mechanic wealthier , ideas anyone or posts i can look at to fault find. Some one help an idiot (learner i mean)

WE all started somewhere... lol
I was lucky I started driving beetles and type 3s in the 60s and 70s... when they weren't that old.,... lol
and I knew nothing at all....

its either piston rings or valve guides....
Valve seats just hold the compression in the cylinder basically..
You may have a broken piston ring which is letting oil past them into the cylinder...
or worn valve guides that are letting oil thru into the cylinder...
a compression tester is used on a spark plug hole, one cylinder at a time, and any bad readings means a problem..
so, You may have just one cylinder letting the oil into the cylinder and fouling the spark plug You mentioned..

it doesn't take long to take out the four spark plugs and test the compression of each cylinder... If He is a good old VW mechanic He may be able to tell You the problem by listening
to your engine...

cheers

LEE

Where are you??? if you take it to a VW mechanic you wont be ripped off.

a wild shot but it did happen to me
how is your break fluid i had my dam ute using a lot of fluid any how short story the leak in the master cylenderwas leaking into the booster so every time i braked hard the dam stuff would run down into the booster so when it was full it would run along to the vacume feed and white smoke everywhere but when i would gas it it stoped

blue smoke on decel generally is worn valve stems and guides.

I had the same thing happen with my brake master cylinder as mentioned very smoky but the smell of burning brake fluid over oil was quite easy to tell. Good luck.

Before you start pulling the engine to bits, if you have the type 4 engine in your kombi then you could just have oil dripping from your rocker covers onto the exhaust manifold as the exhaust on a type 4 exits underneath unlike the type 1 and you may only notice the smoke when slowing down. A couple of new rocker cover gaskets could be all you need.