smokin kombi literally

shero Learner Dubber

2 posts · joined Dec 2010 · 1 Mar 2012, 10:21 pm

#889836

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)

vwjon Fahrvergnugen

914 posts · joined Jul 2006 · 1 Mar 2012, 10:26 pm

#889837

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).

3 1959 cadillacs
1 musso
2 early notchbacks
2 split kombis
2 split panels
1 split ute
1 low light panel
1 ex-pmg bay
1 country buggy
1 beetle ute
1 14" syncro caravelle
1 16" syncro doka
1 golf cabrio
1 vw camper trailer
2 3meter bombs

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 · 2 Mar 2012, 12:01 am

#889853

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

- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

1916baja Custom Title Time!

1,990 posts · joined Sep 2007 · 2 Mar 2012, 7:41 pm

#889995

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

greedy53 Bishop of Volkswagenism

3,062 posts · joined Mar 2006 · 3 Mar 2012, 11:12 am

#890081

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

👍👍😂🙅🥷😬🤓

vlad01 Compulsive Aussie Vee Dubber

4,270 posts · joined Jun 2010 · 4 Mar 2012, 7:58 am

#890183

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

71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE

evsky Seriously Crusin Dubber

125 posts · joined Sep 2008 · 6 Mar 2012, 10:36 pm

#890677

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.

ancientbugger Custom Title Time!

1,986 posts · joined Mar 2004 · 7 Mar 2012, 8:00 pm

#890801

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.