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?

5

Asked by 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.  

4 Answers

74,095

I would also check the catalytic converter.

1 of 1 people found this helpful.
5

How would you check that?

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

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

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