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1989 Camry 4 cylinder spark plugs

  #1  
Old 05-13-2017, 02:25 PM
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Default 1989 Camry 4 cylinder spark plugs

Hi,

How often should I change spark plugs?

Should I just use the regular/copper plugs, or should i use platinum or iridium?

thanks!!!!!
 
  #2  
Old 05-13-2017, 05:40 PM
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Suggest Denso brand platinum. Platinum can last 100K miles. The extra cost of platinum plugs is minimal verses copper and they last a lot longer.
 
  #3  
Old 05-13-2017, 06:07 PM
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Thanks. Do platinums need to be re-gapped?

I use about 1/2 quart every 1,000-2,000 miles. There is no change in mileage or check engine light on. I just checked the exhaust and there is no smoke.

However, I just regapped my spark plugs, #1 and #3 threads have fresh oil. What does that mean?
 
  #4  
Old 05-14-2017, 11:38 AM
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Depends on what the manufactured plug is gaped at. If gaping only move the ground electrode and don't apply pressure on the center electrode. Use a gaping tool.

Most owners never gap a plug.

The threads of 1 and 3 have motor oil on them?

Use a flash light and check for motor oil getting into the spark plug tubes. The tube is pressed or screwed into the head and can leak.

Unless there is a lot of oil in the tube as in getting onto the spark plug socket, would not be concerned.
 
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