Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > Porsche 911 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered
 
Join Date: Oct 1999
Location: Tega Cay, SC , USA
Posts: 33
Unhappy Blowing Smoke

Hi Guys,

My 82 911sc started blowing smoke yesterday (or at least I just noticed it), I was accelerating hard in 2nd gear and noticed when I lifted off that there was a cloud of black smoke behind me. The car runs fine, idles well, was not overfilled with oil and has been rebuilt less than 20k miles ago. My first thought was valve guides but the engine just doesn't have a lot of miles on it. I checked today and I get smoke all the time but much, much more on deceleration. Is it possible something is causing it to suck oil in through a breather hose or any other area? If I broke a ring would I have good running engine still? Any thoughts would be much appreciated.

Thanks,


Seth

Old 09-22-2001, 09:25 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered
 
rstoll's Avatar
 
Join Date: Sep 2000
Location: Shreveport, La.
Posts: 1,710
Post

Black smoke may be rich fuel.

------------------
Robert Stoll
83 SC
83 944
Old 09-22-2001, 10:10 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered
 
Join Date: Oct 1999
Location: Tega Cay, SC , USA
Posts: 33
Post

Pulled my plugs and found that my #2 plug is slightly oiled down. My thought is a broken ring but I'm hoping for another less expensive reason. I also checked my vacuum and it runs a steady 15hg. I thought about the rich mixture problem but the smoke appears to be oil related.

Thanks,


Seth
Old 09-22-2001, 12:00 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered
 
Early_S_Man's Avatar
 
Join Date: Dec 1999
Location: TX USA
Posts: 9,804
Send a message via Yahoo to Early_S_Man
Do a compression test.

------------------
Warren Hall
1973 911S Targa
1992 Dodge Dakota 5.2 4X4 parts hauler
Old 09-22-2001, 12:27 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered
 
Hellgate's Avatar
 
Join Date: Apr 2001
Location: Austin, TEXAS, US of A
Posts: 96
Post

If you are getting blue smoke on deceleration it is most likely valve guides and/or valve guide seals. Also, are your rocker shafts leaking? If they are the oil can drip on to the exhaust system and smoke. Another option can be a "stuck" ring. I've also seen the cyclinder cross hatching worn out on a low mile motor.

Skip the compresion test and have a leak down test done. It will tell you if it is the top end, bottom end or both. It costs more but is cheaper in the long run to determine what is wrong..

Good luck.

Pete
Old 09-22-2001, 02:04 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered
 
Early_S_Man's Avatar
 
Join Date: Dec 1999
Location: TX USA
Posts: 9,804
Send a message via Yahoo to Early_S_Man
Skipping the compression test could be a very costly mistake. Taking a smoking 911 to a shop for a leakdown test is an invitation to be ripped-off for several thousand dollars!

A compression gauge should be in any 911 owner's toolbox that intends to keep the car very long. A leakdown tester costs less to buy than having it done at a shop, even if you have to take the car to a service station and use their shop air! Relying on others to do tests for you is laziness that can be very costly in the long run ... test results have to be seen in person to be trusted. Fraud is rampant when gullible 911 owners take their cars to shops and leave them unattended ... just ask a few board regulars about recent experiences!

------------------
Warren Hall
1973 911S Targa
1992 Dodge Dakota 5.2 4X4 parts hauler
Old 09-22-2001, 02:54 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Registered
 
Join Date: Oct 1999
Location: Tega Cay, SC , USA
Posts: 33
Post

Thanks Guys,

I own a compression tester so that will be the next thing I'll do. I just need to find the time.

Thanks Again,

Seth
Old 09-23-2001, 04:21 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered
 
jabb's Avatar
 
Join Date: Aug 1999
Location: Denver, NC
Posts: 1,391
Post

Any Update ???

------------------
  • Joe A.
  • 84 911 Targa
  • 75 914/6 3.0

Old 10-09-2001, 07:12 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Reply


 


All times are GMT -8. The time now is 05:30 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.