1992 4Runner 3.0 V6 EFI engine. Starts great, idles fine, plenty of get up and go but balks when maintaining speed. Is it the fuel pressure regulator?

Asked by Mushrm Jun 12, 2017 at 01:43 PM about the 1992 Toyota 4Runner 4 Dr SR5 V6 SUV

Question type: Maintenance & Repair

She has 268,000 miles but has had the head gaskets replaced again 8,000
miles ago and valves done 68,000 miles ago. replaced fuel filter last fall. I am
just lately getting real bad gas mileage, about 12mpg, and it balks when
trying to keep an even speed like riding a bull sometimes at lowest speeds
in traffic. Are these symptoms of a Fuel Pressure Regulator? or something
else. I was told by a mechanic at the dealer that the regulator was likely the
problem.

F_O_R answered 7 years ago

I would also check the catalytic converter.

1 people found this helpful.

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Mushrm answered 7 years ago

How would you check that?

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G answered 7 years ago

Get new irridium spark plugs for mpg. Doesn't cost too much either.

Mark helpful

G answered 7 years ago

Also z-max fuel additive helped mine. I'm at around 13.8 city and don't drive slow at all.

Mark helpful

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1992 4Runner 3.0 V6 EFI engine. Starts great, idles fine, plenty of get up and go but balks when maintaining speed. Is it the fuel pressure regulator?

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1992 4Runner 3.0 V6 EFI engine. Starts great, idles fine, plenty of get up and go but balks when maintaining speed. Is it the fuel pressure regulator?

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