1992 Toyota Corolla wont accelerate

Do you have a check engine light On or has flashed?

When was the last tune-up?

Get the fuel pressure and exhaust system for restriction checked then comeback

[quote:18a7625d7a="rasmataz"]Do you have a check engine light On or has flashed?

When was the last tune-up?

Get the fuel pressure and exhaust system for restriction checked then comeback[/quote:18a7625d7a]

It does need tune up but fuel pressure and exhaust seem okay. Someone told me gas is getting thru fuel rail to injectors but too much is going back and not enough into injectors???? No engine light is on

[quote:369d73fda2="teresaacorley"][quote:369d73fda2="rasmataz"]Do you have a check engine light On or has flashed?

When was the last tune-up?

Get the fuel pressure and exhaust system for restriction checked then comeback[/quote:369d73fda2]

It does need tune up but fuel pressure and exhaust seem okay. Someone told me gas is getting thru fuel rail to injectors but too much is going back and not enough into injectors???? No engine light is on[/quote:369d73fda2] Could it be fuel pressure regulator????

Did you actually performed the fuel pressure test or just using the eyeball method or the thumb.

I need the fuel pressure readings before I can continue to assist.

If its getting too much fuel could be a problem with the presssure regulator not maintaining the fuel pressure.

Sounds like a fuel pressure issue as mentioned. The fuel pressure regulator is located on the fuel rail on the passengers side, it is small and round and has a vaccum line to the intake manifold and a rubber fuel return line on the bottom of the unit. Pressurize the fuel system (don't start it) and pull the vaccum line and look for gasoline, that would indicate the FPR diaphram is ruptured and the FPR must be replaced. This engine (4AFE) does not have a fuel pressure test port, there is a special fitting that screws into the cold start port on the fuel rail (you have to remove the Cold Start Valve on the rail). This fitting has metric threads on one end and a shraeder valve on the other. You may have to go to Toyota service to get this done, or a garage that specializes in Toyota's. You need to know what the fuel pressure is before you can isolate the problem. In the picture below the FPR is the round "cup" directly behind the #1 cylinder.