PCV FLOW??

[gripit_N_ripit]

OK GUYS IM BACK!!!LOL i was messing with my fj that has 55000 on the odometer. i had the engine completely warmed up and was setting the idle i accidentally removed the pcv hose at the air filter box. i saw a pretty good stream of smoke coming out. now given the mileage i would expect to see some smoke but i would like to hear your input. thanks

[Flying Scotsman]

Sounds like a problem.Where does the smoke come from ?

[gripit_N_ripit]

in my experience with cars. when you see smoke coming from the pcv usually means worn rings leaking combustion gases into the crankcase therefor exiting through the pcv. i think i'll try compression testing the motor dry/wet and that should tell me right? wondering how much is too much?

[racerman_27410]

was it smoke or steam ?  how long had it been since the engine was previously running ?

how long was the engine idleing ?  did you have a fan going on the motor ?



KOokaloo!

[gripit_N_ripit]

was it smoke or steam ?  how long had it been since the engine was previously running ?

how long was the engine idleing ?  did you have a fan going on the motor ?



KOokaloo!

looked and smelt like smoke. the motor has been running for 4 days after a year of sitting under cover. engine was idling for about 15-20 minutes with a fan blowing on the motor. no driveability concerns or engine miss. have not synched the carbs yet for lack of knowledge and confidence,but i did make a manometer and am talking myself into trying it soon. thanks

[Marsh White]

Have you changed the oil?  How old is the oil?

[SlowOldGuy]

There may not be anything wrong.  Remember, the bottom of the pistons move as much air around as the combustion side.  As a result, there's a lot of airflow in the crankcase and you're probably just seeing it coming out the breather hose. 

Just for that reason, never remove the oil filler cap when the engine is running unless you want an oil spray bath.  Also, never start the engine with the clutch slave cylinder unbolted, crankcase pressure will shoot the actuator rod across the garage.

DavidR.

[andyb]

Burning oil or oil vapor?

Run it into a clean rag (paper towel, etc) and see if it smells like oil or burnt oil once you've collected some.  Oil vapor isn't a surprise at all.  Burning oil would make me wonder about ring seal issues.

[gripit_N_ripit]

I changed the oil 4 days ago and put sae 10w40 in it. i am changing it right now just to be sure its clean. ALSO, i wanted the absolute best oil for this engine the parts store next to my shop sells MOBILE1 vtwin 20w50 for aircooled motorcycle engines, would this be ok to use? yamaha told me not to use anything but yamalube.

[carsick]

MOBILE1 vtwin 20w50

Might be transplant rejection issues! It should work but is pretty thick, unless the motor is really tired the clearances are tight enough that it doesn't need a heavy oil. Whoops, I think I just got suckered into posting an oil thread opinion, now I've done it.

[Travis398]

MOBILE1 vtwin 20w50

It should work but is pretty thick, unless the motor is really tired

or you live in the desert, like say New Mexico

[RichBaker]

I run 10w40 year-round, I live in Tucson,AZ........ Not a problem, even at 110F.  Stick with 10w40.....   

[carsick]

or you live in the desert, like say New Mexico

Or you whip the horse's eyes every time you ride, like say on a rally

[Mark Olson]

or you live in the desert, like say New Mexico

Or you whip the horse's eyes every time you ride, like say on a rally

whip it , whip it good.

[simi_ed]

You must whip it,    Crack that whip ...