puff puff from oil filler cap - Ford Powerstroke Diesel Forum
 
LinkBack Thread Tools Display Modes
post #1 of 5 Old 08-24-2012, 07:36 AM Thread Starter
Member
 
Join Date: Feb 2012
Posts: 49
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
puff puff from oil filler cap

Hey everyone,
Tgif. I have a 97 f250 psd supercab that i bought not running. It had been sittin for 3 yrs.
I have it running and am driving it. Ive changed all filters and oil. My question or problem is that when i take oil filler cap off i have some puffs of compression coming out???
It is not skipping and i am not losing any coolant. I replaced number 8 injector and found out a couple of injectors injectors were not torqued. Im going to take off valve cover and torque other side this weekend. Has anyone had experience with this issue? ? Any ides on what it could be???
Thanks, Thomas
atstew42 is offline  
post #2 of 5 Old 08-24-2012, 08:55 AM
Compression Ignition Addict
 
Join Date: Dec 2007
Posts: 6,318
Thanks: 7
Thanked 253 Times in 244 Posts
Mentioned: 6 Post(s)
Quoted: 101 Post(s)
Feedback Score: 3 reviews
Gee, what makes you think this is a problem? A diesel engine, because it has much higher compression and and that much more gets by the rings, will always have more blow-by (what it is you're describing) than a comparable gas engine.

Is it that you think it may be coinciding with the firing of a single cylinder? I mean, a cylinder is going to be firing like 5 times a second so, it would be hard to "see" a pulsation like that...
NoRalPh is offline  
post #3 of 5 Old 08-24-2012, 09:18 AM Thread Starter
Member
 
Join Date: Feb 2012
Posts: 49
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Thanks for reply,
It is puffing like every .5 second. I didnt thin this was normal. The truck has 189k189k and i have done the ccv mod. So this is normal???
atstew42 is offline  
post #4 of 5 Old 08-24-2012, 11:40 AM
Compression Ignition Addict
 
Join Date: Dec 2007
Posts: 6,318
Thanks: 7
Thanked 253 Times in 244 Posts
Mentioned: 6 Post(s)
Quoted: 101 Post(s)
Feedback Score: 3 reviews
I don't think I'd be too concerned....

With 200K on the clock and running well - Why look for trouble As I said, there's going to be more blow-by then you might be used to seeing (CCV mod or not - be sure your hose has no kinks or "low spots" that could collect oil and hamper the breathing though) and still considered normal.

There's an "Ole Timey" test that says if you remove that cap and place it back over the opening, upside down, and it doesn't blow-off. you're OK. Sounds kinda silly to me, if it's not running perfectly smoothly it would vibrate off probably, I donno, you could try it if it makes you feel better (if it stays there it would be good, I just don't agree that if it doesn't it's significant )

Another thought, if it's been sitting like that, maybe put some miles on it and see what happens..

Last edited by NoRalPh; 08-24-2012 at 11:45 AM.
NoRalPh is offline  
post #5 of 5 Old 08-24-2012, 11:50 AM Thread Starter
Member
 
Join Date: Feb 2012
Posts: 49
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Ok. Ive done the upside down test and it hops off eith the compression.
I havent driven it but 200-300 miles since back running. Ill drive it more and out some oil aditive in it.
Thanks
atstew42 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome