1994 Buick La Crosse engine bogs duing acceleration

Tiny
DANIELHATMAN78
  • MEMBER
  • 1994 BUICK LA CROSSE
Heater problem
1994 Buick La Crosse V8 Two Wheel Drive Automatic

when you press on the gas the engine bogs intake reacently changed along with distribtor timingis set correctly.
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Sunday, March 22nd, 2009 AT 8:12 PM

3 Replies

Tiny
OBXAUTOMEDIC
  • EXPERT
Hello,

Check fuel Pressure, and pressure regulator, fuel filter, Cap, rotor, plugs, wires, air filter, Mass Air Flow Sensor, and compression.

If engine light is on have codes pulled.

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Sunday, March 22nd, 2009 AT 8:28 PM
Tiny
DANIELHATMAN78
  • MEMBER
Fuel pressure is ok, fuel filter was just replaced, no trouble codes are present already checked, plugs are old should I start there.
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Monday, March 23rd, 2009 AT 8:09 AM
Tiny
OBXAUTOMEDIC
  • EXPERT
Pull a couple and see what they look like. Compare them with the plugs at the following link. Post findings...

http://www.2carpros.com/how_to/how_to_change_my_spark_plugs.htm

Also, could be a clogged or partially clogged Cat. Should have it checked or if you have a pocket IR thermometer laser temperature reader you can do the following....

Check the exhaust system for blockage. A plugged catalytic converter can cause low engine power by not allowing the engine exhaust to exit the engine properly. To check for this condition take your car for a 15 minute drive allowing the exhaust system to warm, park the car safely and use a pocket IR thermometer laser temperature reader to measure the temperature the exhaust pipe entering the catalytic converter and the exhaust pipe leaving. The temperature should be lower going into the catalytic converter and hotter leaving the catalytic converter.

Example: the temperature entering the catalytic converter is 300 degrees and exiting the catalytic converter is 450 degrees. This means the catalytic converter is working properly, if the temperature is the same or lower the catalytic converter is not working and is probably plugged.

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Tuesday, March 24th, 2009 AT 5:50 PM

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