Question about 1990 Chevrolet Cavalier

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Spark plug blowout

I have a 1990 chevy cavalier there is a hole in the muffler I want to know if the hole would cause the spark plug to blow out ? I have rethreaded the the spark plug and tapped the head.

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No, can't see how?
Make sure you lubricate spark plug threads with anti seize paste and don't over tighten.. usually hand tighten till plug bottoms + 1 flat of hex.

Posted on Aug 03, 2008

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I have a 97 chevy cavalier and its running ruff blowing the muffler off and the spark plugs out I put a new fuel filter


If it is blowing the spark plugs out are the threads stripped? Sounds as if you may have the plug wires connected to the wrong plugs. Check firing order.

Feb 20, 2015 | Cars & Trucks

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I have a 1997 chevy 1500 cheyenne was running rough then died wouldnt start had it towed fuel came out of the muffler when it was at an angle on the tow truck


Sounds like the spark plugs are not firing to burn the fuel. Check to make sure all spark plugs and wires are in good condition (not torn or have a bunch of "white stuff" the white stuff is from the plug wires grounding out on something metal and not delivering the electrical signal to the spark plug.
Then follow the plug wires to the distributor and ensure all is clean and in good shape. You can also unlatch the distributor cap and clean the 8 metal contacts inside the cap.
If it will start a easy thing to check is your timing. Need a timing light but if it is a 5.7L GM 350 small block I believe timing is 8 degrees from TDC (Top Dead Center)
Good Luck

Nov 09, 2013 | Chevrolet Cars & Trucks

1 Answer

90 chevy cavaier voltage light will come on when driving. new alternator has been installed and new wires to spark plugs. Help


Try cleaning your grounds, and connections at the battery, if one of these connections gets hot and builds up resistence this can cause the problem, the same is true of the alternator.

Feb 02, 2010 | 1990 Chevrolet Cavalier

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Muffler continues to blow a hole in it making my jeep become really loud this is the third muffler


If you live near, on or continuously drive on uneven terrain then you might be scraping somewhere over time creating a hole or improper installation.

Feb 01, 2010 | 1999 Jeep Grand Cherokee

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There is a small hole at the back bottom of a new muffler for my 2003 Cavalier. I'm told this is a venting hole that now comes with all mufflers. Is this true?


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Jan 14, 2010 | 2003 Chevrolet Cavalier

1 Answer

How to repair oil leak in spark plug hole


Do you have oil puddling in the plug hole or do you have oil blowing out a spark plug hole?
Is the plug fowled? maybe caused by running to rich, wrong plug, or a timing problem.

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Had no spark. Replaced ignition mod, 2 coil packs, and computer. I now have fire; problem is engine will not run, the fuel injector sprays fuel (too much i think). When i unplug the injector the engine...


Check for any wiring pinch which might have occurred when the injector was replaced. The injector is driven directly by the computer, so it seems to point at the new computer as being faulty. (pulse signal is always 'on')

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