Notices
Evo General Discuss any generalized technical Evo related topics that may not fit into the other forums. Please do not post tech and rumor threads here.
Sponsored by: RavSpec - JDM Wheels Central

Fill up and blow by.

Thread Tools
 
Search this Thread
 
Old Nov 8, 2008, 07:56 AM
  #1  
Evolved Member
Thread Starter
iTrader: (3)
 
Boostfiend's Avatar
 
Join Date: Apr 2004
Location: Mountain View, California
Posts: 720
Likes: 0
Received 0 Likes on 0 Posts
Fill up and blow by.

I just filled up and my engine was idling rough so I figured it was just air in the tank, as I hadn't driven the car in about a week and a half it sat with an empty tank so I filled it up today.

Then I noticed a bit of oil near the oil cap, it wasn't a puddle but just a like a film. I figured it was just normal blow-by.

All of these symptoms sound normal?
Old Nov 8, 2008, 08:23 AM
  #2  
Evolved Member
iTrader: (9)
 
EatSleepBoost's Avatar
 
Join Date: Jan 2008
Location: Mass
Posts: 971
Likes: 0
Received 0 Likes on 0 Posts
sounds normal. the vehicle will tend to run rough right after gettin fuel. that is normal as a change in fuel tank pressure. if my car is hot and i stop for gas and start it back up after fueling the thing barely stays running.

as far as the oil near the cap don't worry about it. as long as ur dipstick didn't come shooting out of its sleeve yet u r all set.
Old Nov 8, 2008, 09:39 AM
  #3  
Evolved Member
Thread Starter
iTrader: (3)
 
Boostfiend's Avatar
 
Join Date: Apr 2004
Location: Mountain View, California
Posts: 720
Likes: 0
Received 0 Likes on 0 Posts
Thanks I figured it was normal just wanted confirmation.
Old Nov 8, 2008, 09:49 AM
  #4  
Evolved Member
iTrader: (73)
 
SHhhhh's Avatar
 
Join Date: Jan 2004
Location: FL
Posts: 1,158
Likes: 0
Received 1 Like on 1 Post
Originally Posted by EatSleepBoost
the vehicle will tend to run rough right after gettin fuel. that is normal as a change in fuel tank pressure. if my car is hot and i stop for gas and start it back up after fueling the thing barely stays running.
Old Nov 9, 2008, 01:14 AM
  #5  
Evolved Member
iTrader: (21)
 
LilRico's Avatar
 
Join Date: Feb 2007
Location: Cut throat, Orlando
Posts: 1,848
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by SHhhhh
+1! You shouldn't have any issues after you pump gas.... That's a new one for me...
Old Nov 9, 2008, 06:41 AM
  #6  
Evolved Member
 
barneyb's Avatar
 
Join Date: Jun 2006
Location: Grand Island, NE
Posts: 6,902
Received 144 Likes on 128 Posts
Press a fingernail into the oil filler cap gasket. A good gasket will be soft and pliable. A bad gasket will be hard - replace.

If the gasket is hard next check under the spark plug cover. Usually, if a little oil is found around the cap, more oil that came from the cap will be found under the cover. This area should be kept oil free.
Old Nov 9, 2008, 02:36 PM
  #7  
Evolved Member
iTrader: (9)
 
EatSleepBoost's Avatar
 
Join Date: Jan 2008
Location: Mass
Posts: 971
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by LilRico
+1! You shouldn't have any issues after you pump gas.... That's a new one for me...


For one my vehicle has cams so the idle is already poor. Secondly your vehicle has an evap system that controls fuel tank pressure, when pressure is relieved (remove gas cap) it will affect your vehicle when u start it up until it achieves its desired tank pressure once again.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Matz
Evo General
20
Aug 31, 2017 09:23 PM
hokiruu
Evo How To Requests / Questions / Tips
95
Mar 21, 2012 03:13 PM
bbyevo8u
Evo General
6
May 30, 2011 10:19 AM
MurphDurph
Lancer Aftermarket Forced Induction Tech
21
Dec 29, 2008 06:36 PM
hokiruu
Evo How Tos / Installations
1
Mar 7, 2007 06:41 PM



Quick Reply: Fill up and blow by.



All times are GMT -7. The time now is 06:47 PM.