The 8th Gen Riviera Resource
 
HomeDashboardSearchRiviera Questions & AnswersWrite-Ups IndexRegisterRelated LinksLog in

Share
 

 Bad Valve Cover Gasket

Go down 
Go to page : 1, 2  Next
AuthorMessage
Tank
Enthusiast
Tank

Name : Shawn
Age : 35
Location : Mansfield, Ohio
Joined : 2010-01-31
Post Count : 123
Merit : 1

Bad Valve Cover Gasket Empty
PostSubject: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyMon Apr 19, 2010 5:57 pm

Can bad gasket's make my car run bad??
Back to top Go down
robotennis61
Guru
robotennis61

Name : robotennis
Age : 58
Location : las vegas
Joined : 2007-12-17
Post Count : 5561
Merit : 142

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyMon Apr 19, 2010 6:01 pm

not that i know of. but loss of pressure inside a S/C engine cant be good..
Back to top Go down
Karma
Aficionado
Karma

Name : Andrew
Age : 35
Location : Ontario, Canada
Joined : 2008-01-14
Post Count : 1949
Merit : 122

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyMon Apr 19, 2010 6:38 pm

There would have to be quite a large amount of blow-by for you valve cover gasket to cause you issues. Since your thread title is "Bad valve cover gasket" I'm assuming thats what you are referring to.

.. However, if your PCV valve is plugged, then your crank case pressure can build up and your valve covers can leak, with other poor running symptoms. What makes you think the VC gaskets are bad?

_________________
Warning!
Back to top Go down
Tank
Enthusiast
Tank

Name : Shawn
Age : 35
Location : Mansfield, Ohio
Joined : 2010-01-31
Post Count : 123
Merit : 1

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyMon Apr 19, 2010 7:06 pm

Well Ive had problems since I got it hard starts, stalls, all kinds. I left it alone till the other day and tried to start it. It eventually started but when u touch the gas it has bad miss to it. Then I seen smoke coming off of both manifolds so thats what I went for first. I might add that the front of the engine is covered in oil also.

Update: I went out and checked the PCV it was filthy but it rattles good.
Back to top Go down
albertj
Master
albertj

Name :
Location : Finger Lakes of New York State
Joined : 2007-05-31
Post Count : 7570
Merit : 153

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyMon Apr 19, 2010 10:50 pm

What can you tell us about how and when you got it, that might help us figure out what's wrong. Like, did youget it from a relative, or off a used car lot, or what-have-you? How long have you had it?

Being that you are in the Mansfield OH area, I kinda wonder if the most effective thing to so is get a replacement engine swapped in. An engine from a car that was running OK (no matter the mileage) would be a great start.

Maybe the first thing to do is wash off the engine so you can see clearly where the leaks are coming from...

Albertj
Back to top Go down
Tank
Enthusiast
Tank

Name : Shawn
Age : 35
Location : Mansfield, Ohio
Joined : 2010-01-31
Post Count : 123
Merit : 1

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyTue Apr 20, 2010 12:09 am

I got it off of a private seller. From what he says the engine was a replacement which had 60k on it. It ran real good for about 2 months then I started getting some problems. I am getting ready to take the car into class and start trying to figure out what is going on. I just wanted to get some input on it.

http://rivperformance.editboard.com/series-i-engine-transmission-f13/ses-light-on-sometimes-t6756.htm
Thats the first thread I started thats when I started getting some of the problems. But now I cannot even drive it because it runs so bad.
Back to top Go down
albertj
Master
albertj

Name :
Location : Finger Lakes of New York State
Joined : 2007-05-31
Post Count : 7570
Merit : 153

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyTue Apr 20, 2010 3:10 am

Off the top of my head: it's great that you're going to be able to take the Riv to class and work on it, most likely you'll fix all the engine problems.

I kind of wonder if your engine got oil starved then ran kinda hot for a while. 3800s are real workhorses, some say that they will run bad longer than most cars will run at all...

Seriously, first thing I'd do is clean off the engine. Do you need instructions? I think there are some posted elsewhere on this site but really, the key thing is just to cover the electricals then scrub it down. If you need more how-to just ask.
Back to top Go down
Tank
Enthusiast
Tank

Name : Shawn
Age : 35
Location : Mansfield, Ohio
Joined : 2010-01-31
Post Count : 123
Merit : 1

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyTue Apr 20, 2010 9:48 am

Ya shur maybe give me a better idea of good ways to clean it
Back to top Go down
albertj
Master
albertj

Name :
Location : Finger Lakes of New York State
Joined : 2007-05-31
Post Count : 7570
Merit : 153

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyTue Apr 20, 2010 10:28 am

On second thought you need to get that code reader and pull codes. And you probably need to do a compression check, and a leak-down test. Your instructor can tell you how to do those. You need to check the wires and coils. And if you have enough blow-by to pop those valve cover gaskets it sounds like you have mechanical problems (rings and/or valves) leading to excessive blow-by.

Since I mentioned engine cleaning I'll explain - but again I think you need to see whether you have stored any codes, and since you are going to work on the car in your class I am sure you'll find the problmes anyway you don't need me for that. SO that means that although I said you ought to clean off the engine, on second thought checking the basics of engine operation is what you ought to do first.

As for cleaning the engine, it's pretty easy. If you can find someone to do it you can simply pay to have it steam cleaned. Or you can clean it yourself: With the engine cold, cover the electrical stuff with aluminum foil - specifically the alternator and the exposed connectors on the wires around the engine compartment. Then with the engine cold use a spray on engine cleaner (GUNK, which is kerosene-based, or Wal-Mart's engine cleaner, which is a surfactant) and a brush (an engine brush, available just about any auto parts store, or a dishwashing brush, usually available at dollar stores basically a little brush head on a long handle) OR some dishwashing liquid (I like Dawn) with that brush. Idea is to follow the label directions on the spray-on cleaners. Or if you're using dish liquid the idea is to wet the brush then put some dish liquid on the brush and scrub the engine with it. Then rinse the engine off with water, warm water if you can. Then it has to dry. You can 'blow dry' it with a wet-dry vac as a blower, use a nozzle attachment to aim the air. Once it is pretty much dried off then take off all the aluminum foil and start it.


Last edited by albertj on Wed Apr 21, 2010 3:42 pm; edited 1 time in total
Back to top Go down
Tank
Enthusiast
Tank

Name : Shawn
Age : 35
Location : Mansfield, Ohio
Joined : 2010-01-31
Post Count : 123
Merit : 1

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyTue Apr 20, 2010 11:09 pm

Well my fuel pump is bad frown The guy said he put one in, and it does look brand new must have just been defective. Now on to the oil leak.....
Back to top Go down
Eldo
Expert
Eldo

Name : Mark
Age : 55
Location : West Salem, Oregon... FINALLY
Joined : 2009-04-09
Post Count : 3058
Merit : 103

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyTue Apr 20, 2010 11:13 pm

Just a thought. God knows that there are plenty of things that can make these engines run poorly, but IF the valve/rocker cover gaskets are that bad, they could be leaning out the mixture thru the PCV valve...
Back to top Go down
Rickw
Guru


Name : Rick
Location : Lancaster, MA
Joined : 2008-09-13
Post Count : 6232
Merit : 112

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyWed Apr 21, 2010 12:19 am

If you do indeed have excessive crankcase pressure that has caused the gaskets to blow out, then you are dealing with rings more so than valves, In my opinion.
This is where a compression test and a leakdown test will pinpoint your problems. Also put a pressure gauge on your intake to see what your reading there while running or cranking.
Back to top Go down
Tank
Enthusiast
Tank

Name : Shawn
Age : 35
Location : Mansfield, Ohio
Joined : 2010-01-31
Post Count : 123
Merit : 1

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyWed Apr 21, 2010 12:29 am

Where would I put the gauge on the intake? Maybe a dumb question but...
Back to top Go down
Rickw
Guru


Name : Rick
Location : Lancaster, MA
Joined : 2008-09-13
Post Count : 6232
Merit : 112

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyWed Apr 21, 2010 12:34 am

I have a combination Vacuum and pressure gauge.
Dpeneding on what year car you have you need to find a spot on the Lower intake manifold that you can tee the gauge into and take a reading at idle and with moderate throttle.
At idle it should be a steady, not fluctuating vacuum reading.
After you get a reading post on here what it is you are seeing.
Vacuum as well as compression and leak-down test's are what you need to be able to further diag this engine, from what i have read.
Back to top Go down
albertj
Master
albertj

Name :
Location : Finger Lakes of New York State
Joined : 2007-05-31
Post Count : 7570
Merit : 153

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyWed Apr 21, 2010 3:45 pm

Tank wrote:
Well my fuel pump is bad frown The guy said he put one in, and it does look brand new must have just been defective. Now on to the oil leak.....

Interesting. How do you know the fuel pump is bad? That is, did you read fuel pressure at the Schraeder valve on the fuel rail? or did you get a reading from the car's sensors (it has a fual pressure sensor) using Car-Code or a Tech II or other scanner? It'd help everyone if you say how you figured out a new fuel pump was bad, that can be really frustrating. Do tell.

Albertj
Back to top Go down
Eldo
Expert
Eldo

Name : Mark
Age : 55
Location : West Salem, Oregon... FINALLY
Joined : 2009-04-09
Post Count : 3058
Merit : 103

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyWed Apr 21, 2010 3:50 pm

albertj wrote:


Interesting. How do you know the fuel pump is bad? That is, did you read fuel pressure at the Schraeder valve on the fuel rail? or did you get a reading from the car's sensors (it has a fuel pressure sensor) using Car-Code or a Tech II or other scanner?
Albertj

Albert, where is the fuel pressure sensor? All I can find is the fuel tank pressure sensor...
Back to top Go down
albertj
Master
albertj

Name :
Location : Finger Lakes of New York State
Joined : 2007-05-31
Post Count : 7570
Merit : 153

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyWed Apr 21, 2010 4:03 pm

If you are using a TechII you can get a direct read of fuel pressure. I did this with the service manager's TechII last time I had a no start problem. Up to that point I had no idea one could in fact do that. I admit that I'd have to take a closer look (dont' own a TechII) at the FSM to see if they are reading pressure in the tank or elsewhere. I also don't know if it is a direct read or a calculated reading actually based on the output from a different sensor. Sorry I can't help more.

bottom line is I *am* certain you can read it on a Tech II. I really don't know *how* the reading is generated.

Albertj


Albertj
Back to top Go down
Tank
Enthusiast
Tank

Name : Shawn
Age : 35
Location : Mansfield, Ohio
Joined : 2010-01-31
Post Count : 123
Merit : 1

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyWed Apr 21, 2010 4:06 pm

I was at the store when they checked it but my friend hit the pump and it worked for a few minutes..then it made a horrible noise and would not start up anymore. The wiring is new all the fuel lines are new so the guy didnt lie about putting a new pump in it, it was just a bad one I guess.
Back to top Go down
Eldo
Expert
Eldo

Name : Mark
Age : 55
Location : West Salem, Oregon... FINALLY
Joined : 2009-04-09
Post Count : 3058
Merit : 103

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyWed Apr 21, 2010 5:38 pm

Interesting, Albert. I know on my OTC 4000 (on my '97) I can get fuel pump On/Off, and pump speed Normal/High, but the only pressure readout I've found is the MAP... I don't think I can even access the EVAP vacuum switch directly, just the Pass/Incomplete results of the Readiness Test.
Back to top Go down
albertj
Master
albertj

Name :
Location : Finger Lakes of New York State
Joined : 2007-05-31
Post Count : 7570
Merit : 153

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyThu Apr 22, 2010 11:59 am

Eldo wrote:
Interesting, Albert. I know on my OTC 4000 (on my '97) I can get fuel pump On/Off, and pump speed Normal/High, but the only pressure readout I've found is the MAP... I don't think I can even access the EVAP vacuum switch directly, just the Pass/Incomplete results of the Readiness Test.

Your OTC 4000 is a nice tool but it is not a Tech II.

I will try to remember next time I'm at the dealer to find out more. Could be that I am conflating tank pressure with line pressure, and I don't have a Tech II to play with and either give more detail or correct myself.

Albertj
Back to top Go down
Tank
Enthusiast
Tank

Name : Shawn
Age : 35
Location : Mansfield, Ohio
Joined : 2010-01-31
Post Count : 123
Merit : 1

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyFri Apr 23, 2010 11:56 am

well cars running good! No more leaking! Now I just have this loud crunching sound coming from the S/C tensioner...but thats an easy fix. Thanx for all the help guys!!! My belts are horrible though...that wouldnt mess with the tensioner though right??
Back to top Go down
Tank
Enthusiast
Tank

Name : Shawn
Age : 35
Location : Mansfield, Ohio
Joined : 2010-01-31
Post Count : 123
Merit : 1

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptySun Apr 25, 2010 4:09 pm

Well was running great for a day or so frown Now it tries to start...stumbles for a few minutes than dies I dont get it. It ran great on the way home last night and now its back to crap.
Back to top Go down
albertj
Master
albertj

Name :
Location : Finger Lakes of New York State
Joined : 2007-05-31
Post Count : 7570
Merit : 153

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptySun Apr 25, 2010 9:43 pm

I would check for busted wires at the large connector on the firewall.

Albertj
Back to top Go down
Tank
Enthusiast
Tank

Name : Shawn
Age : 35
Location : Mansfield, Ohio
Joined : 2010-01-31
Post Count : 123
Merit : 1

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyWed Apr 28, 2010 11:02 pm

Good call Albert! I got some bad wiring in this thing! Must have been a half-a$$ install on the new engine.
Back to top Go down
albertj
Master
albertj

Name :
Location : Finger Lakes of New York State
Joined : 2007-05-31
Post Count : 7570
Merit : 153

Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket EmptyWed Apr 28, 2010 11:27 pm

maybe, maybe not. Yours is not the first '95 with one or more bum wires at the firewall connector, if you search this site you should even find a photo. One or more wires in the top left corner (the black one for instance).

...I wonder if that wiring problem is what prompted the first engine replacement.

Albertj
Back to top Go down
Sponsored content




Bad Valve Cover Gasket Empty
PostSubject: Re: Bad Valve Cover Gasket   Bad Valve Cover Gasket Empty

Back to top Go down
 
Bad Valve Cover Gasket
Back to top 
Page 1 of 2Go to page : 1, 2  Next
 Similar topics
-
» Briggs and Stratton valve cover modification (No catch can or Drain hose required)
» Pulled my Parents Craftsman out of the weeds.... for the 12th time now
» Rustey Medal
» Warning label cover.
» fabric style bed cover

Permissions in this forum:You cannot reply to topics in this forum
Riviera Performance ::   Supercharged 3800 Tech :: Series I Engine & Transmission-
Jump to: