when i unplug the fuel regulator, my 94 toyota corolla runs so much smoother. Is this telling me theres an issue?

60

Asked by Feb 26, 2013 at 02:12 PM about the 1994 Toyota Corolla

Question type: Maintenance & Repair

First of all my car cuts of after running for 20 or so minutes.  no signs or symptoms before she cuts off.  Ive replaced numerous parts. car still cuts off after getting to good running temperature.  I unplugged the fuel regulator and the car instantly ran smoother and guieter.  Only in park though. Is this telling me theres a problem with the fuel system and if so what?

3 Answers

89,925

By removing the vacuum source from the regulator, you increased the fuel pressure and unless you capped the vacuum line, you allowed additional air into the engine. It probably had a net result of a higher RPM which would appear to be smoother. --- As for your cutting off problem, try some starting fluid when it quits to see if it's a fuel or spark problem.

1 out of 1 people think this is helpful.
60

ok guys, i sprayed starter fluid and there was no start, you said if it didnt, there was no spark. what do i go to now

60

please help

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