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Need help asap...major oil leak,possible bad cat/converter
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dolejaly
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Sep 15, 2012, 9:17 AM
Post #1 of 10
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Need help asap...major oil leak,possible bad cat/converter
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1996 Chrysler Sebring jxi-2.5......I have 2 questions, but will start with the first problem.(they might run hand in hand, not for sure) I had a slight oil leak for over a year, maybe added a quart in every 2 months...Now I noticed when the car was in the garage a spot on the floor about 6x6 inch, which seemed to be towards the front of the motor(judging by where the car was sitting)...for the past week...I noticed this, now I am having some other issues possibly catalytic converter plugged or gone bad...We have torn down to a certain point trying to find why the car was having no power when accelerated issues, which was checking all plugs/wires which one spark plug was fouling out due to oil covered, then cleaned and put the motor back together, now there is a trail of oil leaking, majorly, could we have blown the rear seal if the cat/converter was bad or plugged? Was told to add bars leak to stop the leak, but leary on that...also could the valve cover gaskets be leaking and got worse as well due to the same issues of cat/converter/.
My main reason all of this started was when I accelerated from a dead stop the car didn't have hardly any power(tranny is fine) Best way to describe this is somewhere between the motor and tranny wasn't getting a good connection. My Car in the past month has been getting louder, which I did have a water hole incident with the car a little over a month ago as well as the drain plugs on the car inside didn't drain and the floor boards did fill up with water about 2 inches when it rained(got drains unplugged)...since trying to narrow down the no power issue is where we now have the major oil coming out from somewhere...
Could a bad Cat/Converter cause no power when accelerating from dead stop?
Can a bad cat/converter cause to blow the main rear seal?
Should I attempt the bars leak for the oil leak?
Running no cat/converter do any harm to the motor(02 sensor before cat/converter)?
If the original oil leak was from the valve covers could it made it worse due to bad cat/convert?
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Discretesignals
Ultimate Carjunky
/ Moderator
Sep 15, 2012, 9:49 AM
Post #2 of 10
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Re: Need help asap...major oil leak,possible bad cat/converter
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Could a bad Cat/Converter cause no power when accelerating from dead stop?
It could, but you would also have lack of power anytime you accelerate from any speed. You need to check for excessive exhaust back pressure.
Can a bad cat/converter cause to blow the main rear seal?
To blow a seal out there would have to be excessive crankcase pressure. Check the operation of your PCV system and make sure you don't have excessive crank case pressures. A restricted catalyst affects engine manifold pressure, so that could affect the operation of the PCV system.
Should I attempt the bars leak for the oil leak?
Absolutely not. You need to determine the source of the leak. You may need to get the vehicle in the air and clean off the underside if it is really oiled up. Watch to see where the leak is originating from. Leak sealer won't seal rotating parts.
Running no cat/converter do any harm to the motor(02 sensor before cat/converter)?
It won't harm post or pre cat sensors. It is against federal law to remove a catalyst from a vehicle. If you live in an emission inspection state, you'll fail. The check engine light will be on for catalyst efficiency codes.
If the original oil leak was from the valve covers could it made it worse due to bad cat/convert?
Once again you need to check for excessive crankcase pressures and be sure the PCV system is operating correctly.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Sep 15, 2012, 9:52 AM)
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dolejaly
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Sep 15, 2012, 10:23 AM
Post #3 of 10
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Re: Need help asap...major oil leak,possible bad cat/converter
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We had changed the pcv valve, cleaned fuel injectors(actually my nephew is the one working on my car for me).
How it all started. a week a half ago I noticed the car was using more gas than usual, then while going up hill it would have a hesitant, didn't have the normal power as usual. The car had also been increasingly sounding louder and kind of a rattle sound from exhaust. Then a few days ago, while at a stop sign it was bogging down and the rpms was a little higher in between shifting into its gears. Once in drive it was fine...then 2 days ago, went to leave and it hardly had any power it was really bogged down(severe motor oil leak was not present yet)...It did have a funny smell to it and there was smoke coming off the motor at this time...
I was told it could be the cat/converter....But, checked other things first, plugs, wires, sensors, vacuum leaks, etc....Noticed oil puddle on garage floor approx(6x6 in)....was told to tap on converter sometimes they are just plugged, done that and started the car(has always started fine and idles, just not much power when in gear)...ran the car down the road, it seemed fine for a couple of minutes then done it again with the bog down. Pulled back into garage and noticed a trail of oil following...Now its leaking major oil and still having no power problem. Was told to use bars leak which should seal any leaks, also recommended "Lucas"...
Which I am wondering there doesn't seem to be much air pressure out the exhaust now since tapped on it, actually some rattling from the cat/convert now....could pressure caused to back up and blow a seal?
Although the puddle was towards the front of car motor, I guess it looks like it initioated from rear part. I'm still wondering valve covers, being I think that is where the small leak has always been. I also was told that my oil sending unit 2 yrs ago was why my oil light would come on and off, usually on while at a stop sign and once moving the light would go off....
Should we try removing the cat/converter first before doing anything with the leak in case pressure is what caused the leak to go so severe?
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Discretesignals
Ultimate Carjunky
/ Moderator
Sep 15, 2012, 10:34 AM
Post #4 of 10
(14440 views)
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Re: Need help asap...major oil leak,possible bad cat/converter
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Check the operation of the PCV system. Even though you replaced the PCV valve, that doesn't mean the system is working or you have excessive crank case pressures from ring problems going on.
Connect a vacuum/pressure gauge to the dipstick tube. With the engine running there shouldn't be any pressure building up in the crankcase.
Plug off the vent for the PCV system and make sure you have vacuum building up in the crankcase with the engine running.
To check for a restricted catalyst look at the information in this article:
http://www.walkerexhaust.com/...t101/inspections.asp
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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re-tired
Veteran
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Sep 15, 2012, 11:04 AM
Post #5 of 10
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Re: Need help asap...major oil leak,possible bad cat/converter
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You may want to check the fuel pressure regulator, if bad it can allow fuel into the crankcase and thin the oil and caure a increase in leakage . It also affects fuel presssure to the injectors causuing prefomace problems.Pull dip stick and see if oil smells like gas .
LIFE'S SHORT GO FISH
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dolejaly
User
Sep 15, 2012, 1:34 PM
Post #6 of 10
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Re: Need help asap...major oil leak,possible bad cat/converter
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No gas smell in the oil, checking on a couple of things right now....I will keep you guys updated...I'm still wondering why the motor would bog down so bad, then now have a major oil leak...if it is thecat/converter....
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dolejaly
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Sep 15, 2012, 1:43 PM
Post #7 of 10
(14399 views)
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Re: Need help asap...major oil leak,possible bad cat/converter
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can the resinator on the down pipe go bad ?
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Discretesignals
Ultimate Carjunky
/ Moderator
Sep 15, 2012, 3:36 PM
Post #8 of 10
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Re: Need help asap...major oil leak,possible bad cat/converter
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It's a possibility, but rare. If you read the article is states how to check for exhaust restrictions. Do some testing and maybe the "what ifs" will be answered.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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dolejaly
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Sep 15, 2012, 5:36 PM
Post #9 of 10
(14378 views)
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Re: Need help asap...major oil leak,possible bad cat/converter
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UPDATE: Well what my nephew thought was the cat/converter and removed it and took it to the auto place, come to find out whom ever had this car before me already removed the cat/converter..and that was another muffler....So now that theory is ruled out, but this muffler did have some small holes in it....
Now comes the stranger part is...as I explained in my earlier post that it was losing oil, but as he got some things back together(exhaust) to see if it was still bogging out and he checked the oil levels and they were fine...But it is impossible being we hadn't added any oil back into it yet....How can that happen? we made sure it was defintely oil and it is...nothing else like gas or anything else in there.....He is giving it a rest tonight and working on it again tomorrow.....We are going to look into the 02 sensors, but we keep reading that it has 4, then 3 then 2....How many does it have and can they be tested first?
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re-tired
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/ Moderator
Sep 15, 2012, 10:42 PM
Post #10 of 10
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Re: Need help asap...major oil leak,possible bad cat/converter
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There is only 2 ways a crankcase can magically refill itself . water or gas . water /coolant makes the oil turn milky. only gas will blend without color change . my moneys on either t\he regulator or one or more injectors sticking open.
LIFE'S SHORT GO FISH
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