1999 Buick Lesabre ticking noise

1999 BUICK LESABRE
185,000 MILES • 6 CYL • FWD • AUTOMATIC
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JLOUTHAN
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  • 1 POST
hit a speed bump and split oil pan went straight home installed new oil pan woring fine for the day no noises went the next morning to store now its making a ticking noise no oil light no check engine light oil gauge reads 40 could the sensor be bad i used the old one out of the pan or is there something else i need to check i also never let the oil get to low i had to stop and add but it was close to house when it happened the oil was clean in old pan and i put new oil and filter on
Jul 25, 2010 at 8:55 AM
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MHPAUTOS
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Hi there,

You car has hydraulic lash adjusters, which rely on a constant oil supply to operate, with the damaged sump, if oil pressure was down, the lash adjusters are the first thing to suffer as they are at the end of the oiling system, you may just have picked up a bit of carbon in a valve in the adjuster, so i would first do a oil flush with a good quality engine flush agent, this may dissolve any carbon and clear the adjuster.

mark (mhpautos)
Jul 25, 2010 at 9:07 AM