|
|
|
|
| Author |
|
|
Registered
Join Date: Jul 2009
Posts: 6
|
crankcase and exhaust smoke
My car begins to put out white or grey smoke out of the crankcase and exhaust. after the car warms up, it begins to put out white smoke. It does not happen when the car is cold or when it first starts. as the car gets warmer, more smoke appears. could this be from oil and or antifreeze in the system from working on the intake and such. I took the intake pipes, oil filler, and valve covers off before this happened and had it powdercoated. when I put them back on this problem occurred. The car is leaking power steering fluid and there are bubbles in the power steering reservoir. I don't know if they are connected or if the vacuum line is mixed, or even if this could happen. Maybe break fluid from master cylinder? Oil tank Breather? Any simple test I can run in order to rule things out. Antifreeze is not low. If a photo is needed, I will post it. I would like to figure it out before i have to make it smoke again though. Thanks, Ryan
|
||
07-22-2009, 03:12 PM
|
|
|
Registered
Join Date: Jul 2009
Posts: 6
|
85 928 auto
|
||
|
07-22-2009, 03:20 PM
|
|
|
Registered
Join Date: May 2009
Location: Colorado Springs, CO
Posts: 721
|
Does the smoke dissapate quickly? ie Steam? Sounds like water to me.
|
||
|
07-22-2009, 03:58 PM
|
|
|
Registered
Join Date: Jul 2009
Posts: 6
|
I think the head gasket is blown. I just checked the radiator fluid and there is oil on the surface.
|
||
|
07-22-2009, 04:31 PM
|
|
|
Registered
Join Date: May 2009
Location: Colorado Springs, CO
Posts: 721
|
Bummer!!!
|
||
|
07-22-2009, 05:08 PM
|
|
|
Heavy Metal Relocator
|
compression test and leakdown test. these are your friends.
a low cylinder will show you a few things, compared to several good cylinders. there are several things to consider: does your car sit for long periods of time? do you NOT let the engine heat up prior to driving? do you live in a high humidity environment? each of these things would lead you to condensation in the crankcase, releasing (vapors) as the engine heats up. If you run a compression test, and find a low cylinder, you may have one or more things happening: broken/bad rings, broken piston, blown headgasket, cracked head/block liner tower, bent valve(s), etc...... when the car is running, pull the oil fill cap off and look at the vapors. does the vapor pulsate----puff, puff, puff....? if so, you more than likely have a broken ring/piston situation---rather than a blown headgasket. are you running an air pump (smog pump)? this will cause the crankcase pressures to be worse.....if you have internal engine damage. oil in the radiator is not necessarily a blown headgasket. it could also be a bad oil cooler (in the radiator). blown headgaskets usually tend to put lots of oil in the radiator and lots of water in the crankcase, making the mix a milky color in both departments---check both. you need to gather more info before you do a tear down hunting this problem. Good luck-- --Russ
__________________
Absence of Evidence, is not Evidence of Absence. Bill Maher 8/4/09--- "I'll show you Obama's birth certificate, when you show me Sarah Palin's high school diploma." |
||
|
07-22-2009, 05:28 PM
|
|
|
|
Registered
Join Date: Jul 2009
Posts: 6
|
When I take the oil cap off, the vapor pulsates. The car has only been started like 6 times in the past 8 months. The neighborhood had a Vandal come through and break out a bunch of windows in alot of cars, so the car sat while i looked for windows.
|
||
|
07-23-2009, 10:37 AM
|
|
|
Registered
Join Date: Jul 2009
Posts: 6
|
no smog pump, I will check the oil color. Should I let the car run when I check the oil?
|
||
|
07-23-2009, 10:46 AM
|
|
|
Heavy Metal Relocator
|
pulsating vapor would indicate at least broken rings or a broken piston, probably on the ring land.
as for checking the oil level, the best way to do this is to let the engine sit overnight, check the level next day before starting. checking next day gives the engine a chance to let all of the oil in the top of the engine to drain downward. this would give you the most accurate reading, short of completely draining the engine and calibrating the dipstick. sounds like yours is headed towards a tear-down..... be sure to do a compression test first to confirm the problem. good luck-- --Russ
__________________
Absence of Evidence, is not Evidence of Absence. Bill Maher 8/4/09--- "I'll show you Obama's birth certificate, when you show me Sarah Palin's high school diploma." |
||
|
07-23-2009, 03:59 PM
|
|
|
Registered
Join Date: Jul 2009
Posts: 6
|
where is a good place to get the parts?
|
||
|
07-25-2009, 07:16 AM
|
|
|
Heavy Metal Relocator
|
Quote:
depends upon what's broken..... "if" you actually have a busted piston (or ring set), the engine will need to come out and repaired as necessary. you can do this either with a replacement engine, replacement short block, or repair the damaged cylinder. as for parts, there are engines, short blocks, and sometimes pistons sets on various sites like eBay, Craigslist, here on Pelican, over on R-list, etc.... used parts can be found at 928 Int'l, 928 Motorsports, Worldwide, Motorsports SLC, Oklahoma Foreign, etc..... --Russ
__________________
Absence of Evidence, is not Evidence of Absence. Bill Maher 8/4/09--- "I'll show you Obama's birth certificate, when you show me Sarah Palin's high school diploma." |
||
|
07-25-2009, 07:34 AM
|
|
|
Registered
Join Date: Jun 2008
Posts: 21
|
I just repaired a similar problem on my 89'. Mine was a bad radiator. I had lots of oil in the cooling system, but no water in the crankcase. Replaced the radiator, flushed cooling system. Flushed cooling system again with automatic dishwashing detergent (non sudsing). Flushed it again. Then drained and added coolant, distilled water, and redline water wetter. It's all good now. It was a ***** getting all the oil out... But at least I didn't have to pull the motor... Good Luck! The aluminum C&R radiator available at 928Intl is a great choice. Also Mark knows a guy that can fix the oil cooler end tanks for around $160...
Also, there is a way to test the radiator for a oil cooler leak. Use a bicycle innertube. Cut it on the oposite side of the valve stem. Attach the ends of the innretube to the water inlet and outlet. Inflate the innertube slightly. With a stethescope, or a piece of tubing, you can listen to the oil line inlet and outlet for leaking air. You can also submerge the radiator in water and look for bubbles coming from the oil line fittings if you have a kiddie pool or something similar...
__________________
89' 928S4 Meteor Grey auto 86.5' 928S Meteor Grey auto(building engine after TBF) 85.5' 944 NA 5 speed(Now daughters car) 80' 928 Black 5 speed SOLD 79' 928 Guards Red auto SOLD Last edited by 928Guy; 07-28-2009 at 02:32 PM.. |
||
|
07-28-2009, 02:26 PM
|
|
|
 |
|
|
| Tags |
| smoke crankcase intake |
