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My hilux 1kd-ftv wont start 3.0 d4d return fuel line full pressure


if it is a common rail diesel then the pressure in the return line would burst it as the line is not capable of 25.000 psi
so the return line will have low pressure if it is blocked some where

have the injectors tested as there may be a tip seat problem that prevents it from starting and the compression pressure is making the pressure in the return line past the needle

Sep 16, 2015 | Cars & Trucks

2 Answers

Fuel pressure 1998 jeep grand cherokee 4.0 L V6


You should have a test port on the Fuel Supply rail, use a tool from a local auto parts "Tool Loaner program" where you can borrow tools for free,w/a deposit of course,then follow the steps provided;

MPI Fuel System Pressure Test

The MPI fuel system used in vehicles equipped with a 4.OL engine employs a vacuum balanced pressure regulator. Fuel pressure should be approximately 55-69 kPa (8-10 psi) lower with the vacuum line attached to the regulator than with the vacuum line disconnected. System fuel should be 214 kPa (31 psi) with the vacuum line connected to the regulator and 269 kPa (39 psi) with the vacuum line disconnected. CAUTION: Some fuel may be discharged when connecting fuel gauge to fuel rail.
  1. Connect a 0-414 kPa (0-60 psi) fuel pressure gauge to test port pressure fitting on fuel rail (Fig. 7).
  2. Remove vacuum line from pressure regulator.
  3. Start the vehicle.
  4. Note gauge reading. With vacuum line disconnected, fuel pressure should be approximately 269 kPa (39 psi).
  5. Connect vacuum line to pressure regulator. Note gauge reading. Fuel pressure should be approximately 214 kPa (31 psi).
  6. If fuel pressure is not approximately 55-69 kPa (8-10 psi) higher with vacuum line removed from regulator, inspect pressure regulator vacuum line for leaks, kinks or blockage. CAUTION: Fuel pressure will rise to as much as 655 kPa (95 psi) when the fuel return tine is pinched shut, shut engine down immediately after pinching oft fuel return line.
  7. If fuel pressure is low, momentarily pinch shut the hose section of the fuel return line. If fuel pressure remains low, inspect the fuel supply line, fuel filter, and fuel rail inlet for blockage. If fuel pressure rises replace fuel pressure regulator.
  8. If fuel pressure is above specifications, inspect the fuel return line for kinks and blockage.

Capacity Test

  1. Remove the cap from the pressure test port in the fuel rail.
  2. Connect a 0-414 kPa (0-60 psi) fuel pressure gauge to the pressure fitting on the fuel rail (Fig. 7).
  3. Start the vehicle. Pressure should be approxi- mately 214 kPa (31 psi) with the vacuum hose connected to the pressure regulator and 269 kPa (39 psi) with the vacuum hose removed from the pressure regulator.
  4. If the pressure is not to specification, check the following before replacing the fuel pressure regulator:
  • 4a - Inspect the fuel supply and return lines/hoses for kinks or restricting bends
  • 4b - Check the fuel pump flow rate. A good fuel pump will deliver at least 1 liter of fuel per minute with the fuel return line pinched off. If the fuel pump does not pump adequately, then inspect the fuel system for a plugged fuel filter or fuel pump inlet filter (sock). Fuel pump flow rate can be done by connecting one end of an old A/C gauge hose to the fuel test port on the fuel rail and inserting the other end of the hose into a container of at least 1 liter capacity. Run the fuel pump by installing a jumper wire into diagnostic connector terminals D1-5 and D1-6. Be sure to pinch off the fuel return line or most of the fuel will be returned to the fuel tank.

May 19, 2014 | 1996 Jeep Grand Cherokee

1 Answer

Does my 1974 dodge dart with a 318 motor have a fuel return line on it fuel sending unit?


Hey Jim,I see that it is showing 2 types at auto part stores.You can see the return line on the one with it,the way to find out is when you change you will see.Not good to buy in advance,may have to order.
  1. Usually a pump with a return will have a separate connection to go from the pump back to the cell. If yours has that connection ,I would put the return line back to the cell on it.
    A return line is nothing more than excess fuel being returned to the cell.

Jan 04, 2013 | Cars & Trucks

1 Answer

`95 toyota 3vze is sluggish from 2000 to 3000 rpm. OK at about 3400 rpm. Any ideas ?


it could be a plugged air intake or clogged fuel injectors try adding techron fuel injector cleaner to you fuel at your next fill up

Mar 13, 2010 | 1994 Toyota 4Runner

1 Answer

3vze v6 engine no power to fuel pump can only


remove the passenger side of your dash "the glove box" there is a circuit opening relay tucked up behind the speaker it's small box. it reseavs signal from efi and maf then sends power to your pump. good luck...peace and love for all...

Jan 22, 2010 | 1994 Toyota 4Runner

1 Answer

95 4runner 3vze egine cranks but wont start


Lis the engine getting fuel and spark? If it is then the problem is the distributor is off. Bring the number 1 piston up to top dead center. The first piston on the passenger side of the engine. Then align your distributor for before number one on the cap. When you slide the distributor into place it should line up with number one on the cap. Mark number one on the distributor with a marker. The cap is marked for number one. Put it all back together and the engine should fire up. Then time the engine

Oct 15, 2009 | 1995 Toyota 4Runner

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