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12/02/2022 1:35 pm
Topic starter
I have a 2000 Toyota Tacoma prerunner with a 2.7 L 4 cylinder engine, and it has about 191K miles. It is pre owned, and I don’t know the full service history of it. Recently in January I noticed that it sometimes starts to shake and then backfires, after that usually goes back to normal. I have already replaced the fuel filter and was wondering what my next step should be? (No recent trouble codes other than an evap code in November of last year)
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12/02/2022 2:14 pm
Either the ignition timing is off (stretched timing chain) or it's running too rich at times ( bad fuel injectors).
I do know from the scan tool I have it is running slightly rich. I’ll check the fuel injectors and maybe even the fuel pressure regulator. Thank you very much.