WhiteMamba

iTrader: (5)

Quick question.

After Driving my z around for a while I noticed this.. .

I pop opened my hoood, ( While the engine was idling), then
I removed the oil cap , the car seemed to stumble suddenly ... As soon as I put it back on its fine...

Is this normal.. ( I removed it a couple of times. just to check..) I did the same thing every time... It stumbles very slightly. ( It won't turn off or anything...

I even tried placing my hand over the filler cap, for a short while while the engine was idling .. then removing it.. after removing it ... It would stumble slighly also..


Is this normal

Thanks in advance.

2 SSlow

iTrader: (26)

if your PCV is still hooked up with will make a vacuum leak, explaining the stumble

WhiteMamba

iTrader: (5)

So I guess the stumble should be normal.. ( When I remove the oil cap while its running)

It stumbles... Like changes in Idle speed..

2 SSlow

iTrader: (26)

yessir...no biggie

WhiteMamba

iTrader: (5)

Noticed this when the car is idling.... at normal operating temperatures... and I open the oil cap .. The Car stumbles slightly ... You can hear a change in idle speed.


Then If I put my hand on the oil cap hole,
it creates a suction.. If I remove it it stops.... ( Changes in Idle Speed again)

Is this normal.. . Or Does this means BAD RINGS..??

My Brothers 99 Vette Does not do that.. I tried it on his..
( Had his car Idling ,then I proceeeded to take the oil cap off.
and his car did not stumble.)

Thanks

orangeapeel

iTrader: (18)

Is there a different PCV setup on his car?

WhiteMamba

iTrader: (5)

Who's .. The Vette... No. Stock.

Mine (THE Z) .. . I am more worried about the Vaccum It creates
when I put my hand in the oil cap.. and why it stumbles too..

It tends to ilde at at about 1000-1100. ( Manual)


worried about the Vaccum It creates
when I put my hand in the oil cap.. and why it stumbles too..


BTW... My PCV is stock...

Someone...

Can you all check to see if you all's car does this while idling
at normal operating temps

Check to see if stumbles or creates a vaccum with the oil cap off.

oange ss

iTrader: (50)

it's suppose to work like that

WhiteMamba

iTrader: (5)

???? My 05 Silverado and brother's 99 vette doesn't do it..

oange ss

iTrader: (50)

they most likely have the fixed orifice valve

WhiteMamba

iTrader: (5)

Need to check my PCV Valve to see if its clogged!

!