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whiff of smoke when backing off the throttle?
Anthiron - May 10th, 2007 at 05:15 PM

when i back off the throttle in my baja (when operating the throttle lever on the carby) you get a short whiff of smoke, it doesnt blow smoke when u put ur foot down but if u back off quickly u can see a bit. is this just unburnt fuel? shouldnt it smoke when u accellerate not the other way around?

rich mixture?

tappets maybe? (though i did them recently)

Nicko

lexm - May 10th, 2007 at 06:19 PM

Worn valve guides or valve stem seals (not sure what's in a vw).
Closing the throttle at speed creates vacuum in inlet manifold and sucks oil down past the valve stems.

[ Edited on 10-5-07 by lexm ]

greedy53 - May 10th, 2007 at 07:16 PM

not a worrie when you back of and valves and things go out well could be a prob but now will run forever if your really worried using one of the oil additives that add a coating for wear would be ok

VWCOOL - May 10th, 2007 at 08:40 PM

Quote:
Originally posted by lexm
Worn valve guides or valve stem seals (not sure what's in a vw).
Closing the throttle at speed creates vacuum in inlet manifold and sucks oil down past the valve stems.

[ Edited on 10-5-07 by lexm ]


yeah, that's it. But no seals required in a VW as the valves are installed facing 'downhill'

Anthiron - May 11th, 2007 at 12:17 AM

hmm, ok, not a huge issue atm?