Question about 1991 Buick Park Avenue

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Why will my buick not run and back fire through intake wile cranking

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Start with checking your plug wires but it sounds like it might have jumped time. good luck

Posted on Mar 22, 2011

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Wont stay running.


There is no thinking & throwing parts at any vehicle

The only fix is knowledge & the ability to do some testing

Lets go with a failed fuel pump & at least check pressure
at the motor on a gauge or see if that data is on a scan tool

Explain what test told you a cylinder wasn't firing !

Mar 04, 2014 | 1996 Buick Park Avenue

1 Answer

Just changed Intake Manifold, now Crown Vic won't start


first check if there is fuel coming through then check your nock sensor which is on the crank pully then *** back 2 me

Oct 23, 2012 | 1997 Ford Crown Victoria

2 Answers

1998 buick park ave car back fired and the map sensor popped off and cracked the big black piece of plastic what is the big plastic cover called?


It sounds to me like you are describing the intake plenum. What on earth happened? were you spraying starting fluid in the engine or something?

Aug 08, 2011 | 1998 Buick Park Avenue

2 Answers

Spark plug in cyl. # 4 is wet and saturated with gasoline . does not seem to be firing . engine is running extremely rough . I cannot see under intake manifold to get to spark plug wire . is removal of...


i`m assuming this is a 4 cylinder motor.no you don`t take the intake off to get to the coils.you can get to the coils from under neath the car.have you checked to see if the plug wire is allowing spark to the plug itself.if its only #4 getting wet then the plug could be defective as the coil that fires #4 also fires #1 cylinder.its rare that the coil will fire one side and not both.(it does happen though).there are 2 coils at the back of the motor that sit on the ignition module.you could have a bad ignition module also.the crank sensor is attached to the ignition module on the motor side and the sensor sits in the motor and if you have to remove the module be careful that you don`t brake the crank sensor when removing the unit a the sensor gets brittle from the heating and cooling of the motor over time,also the sensor seal gets stuck in the bore.

Apr 14, 2011 | 1994 Buick Century

3 Answers

I live in canada and when the temp drops below -15c my car doesn't want to start. It will crank really good for 5 to 10 minutes but it doesn't want to fire. any sugestions?


Maybe the crank sensor doesn't send a signal to the computer so that it can fire up the spark plugs and give fuel.

Test for fuel delivery by spraying starting fluid into the intake and seeing if it starts that way. If it does, then there's a fuel delivery problem. If it doesn't then there is likely an ignition problem.

Good luck on this repair.

Nov 18, 2010 | 1991 Buick LeSabre

2 Answers

1999 buick 3.8, was running rough with white smoke.


white smoke tells me engine coolant is mixing with the combustion chamber. you have leaking head gaskets

Feb 07, 2010 | 1999 Buick LeSabre

1 Answer

1992 buick lesabre firing problems


Remave the battery cables from the battery and clean the connections and replace bolts. Have seen this before.

May 17, 2009 | 1990 Buick LeSabre

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