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150cc roketa 4 wheeler 4 stroke. the fuel pump has 4 outlets on it Fuel in, fuel out, vacuum, and vent. What does the vent outlet connect to?

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Probably nothing as it is a vent tube to allow equalization of pressure on the fuel in the carby
at best it will connect to the air cleaner area at the air filter

Posted on Apr 17, 2017


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Looking to change from vac. fuel pump to elec, pump

Tylon, Go for it, Electric pump may fix some difficult starting issues. Check the attached links,instruction and guides, Good luck
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1989 dodge ram 50 2.0 engine

Fuel pump
  1. Disconnect the battery ground cable.
  2. Disconnect the fuel inlet, outlet and return hoses at fuel pump.
  3. Remove the two fuel pump mounting bolts, and remove the fuel pump.
  4. Remove the fuel pump gaskets and insulator.
Check for leakage, if there is oil or fuel leaking from the breather hole, oil seal or diaphragm of fuel pump, the pump is defective. Replace fuel pump as an assembly.

  1. Turn the crankshaft so the No. 1 cylinder is at top dead center on the compression stroke. NOTE : This is to minimize cam lift for ease of installation.
  2. Insert the push rod into the cylinder head.
  3. Install the new gasket and insulator, install the fuel pump.
  4. Tighten the bolts firmly.
  5. Connect the fuel hoses to the fuel pump ******* and tighten the hose clamps.
  6. START the engine.
  7. Check for fuel or oil leaks.

Jun 25, 2015 | Dodge Cars & Trucks

2 Answers

How do I install a new fuel filter?

Important: There is no service interval for in-line fuel filter replacement. Only replace the in-line fuel filter if it is restricted. 1. Relieve the fuel system pressure. Refer to the 2. Raise the vehicle. 3. Remove the fuel feed quick-connect fitting (4) at the inlet of the in-line fuel filter (3). 4. Remove the threaded fitting at the outlet of the in-line fuel filter (3). 5. Drain any remaining fuel into an approved gasoline container. 6. Inspect the lines for cuts, swelling, cracks, and distortion. Replace the lines as required. 7. Inspect the O-ring on fuel filter outlet pipe for cracks or damage. Replace the O-ring as required. 8. Inspect the fuel vent pipe (2). 9. Inspect the fuel return pipe quick connect fitting (1).

Oct 21, 2011 | 1999 Oldsmobile Aurora

3 Answers

2000 Ford Expedition My Expedition (4.6L V-9 2WD) has had an intermittent problem of cutting out. The Check Engine light was not coming on - so I figured it is not a misfire. It drove just like it had...

Continuous Memory Diagnostic Trouble Code (DTC) P0446 or P1450 indicates that Self-Test has detected the Evaporative Emission Control System has excessive fuel tank vacuum. Also, a DTC P0446 indicates a vent control malfunction.

Possible causes:

EVAP canister purge outlet tube (EVAP canister purge valve to EVAP canister) blockages or kinks.

EVAP canister tube (fuel tank to EVAP canister) blockages or kinks.

Fuel vapor elbow on EVAP canister contaminated.

Restricted EVAP canister.

Canister vent (CV) solenoid stuck closed (partially or fully).

Plugged or contaminated CV solenoid filter.

EVAP canister purge valve stuck open.

Fuel filler cap stuck closed (no vacuum relief).

VREF circuit open in fuel tank pressure (FTP) sensor.

Damaged FTP sensor. (fuel tank pressure)

Check for kinks or bends in the fuel vapor hoses/tubes (EVAP canister purge outlet tube and EVAP canister tube).

Visually inspect EVAP canister inlet port, CV solenoid filter and canister vent hose assembly for contamination or debris.

Check CV solenoid filter for blockage or contamination.

The common things I've seen are are mud in the canister and the canister vent solenoid being shot or the wiring to the canister vent solenoid being torn off. The resistance of the solenoid should be 48-65 ohms..
Pick up a Chiltons book and will give you a diagram of where exactly you find the canister. They are like $15 at any auto store. Good luck

May 22, 2011 | 2000 Ford Expedition

1 Answer

I need to replace a thermostat in a 2000 Chevy 2500 6.0 liter pickup

4.8L, 5.3L and 6.0L Engines To Remove:
The thermostat is not serviceable separately. The thermostat housing (water pump inlet) and thermostat must be replaced as an assembly.
  1. Remove the radiator outlet hose. chevy_aval15_02-04_inlet.gif

  2. Remove the bolts from water pump inlet.
  3. Remove the water pump inlet from the water pump.
To Install:
  1. Install the water pump inlet to the water pump.
  2. Install the water pump inlet bolts.
    • Torque to: 11 ft-lbs. (15 Nm)
  3. Install the radiator outlet hose.
6.6L Engine To Remove:
  1. Before servicing the vehicle refer to the precautions at the beginning of this section.
  2. Drain the engine coolant.
  3. Remove or disconnect the following:
    • Water outlet 6.6L Thermostat housing removal gm_trk_sil25_02-04_66_therm_hous_rem.gif

    • Bolt for the fuel line bracket
    • Thermostat housing cover bolts
    • Thermostats and seals
To Install:
6.6L Thermostats and seals gm_trk_sil25_02-04_66_therm_seal.gif

  1. Install or connect the following:
    • Thermostats and seals to the thermostat housing NOTE: The rear thermostat (D) has 2 vent valves. Install with the vent valves towards the rear of engine.
    • Thermostat housing cover with a NEW gasket
    • Thermostat housing cover bolts and tighten the bolts
      1. Torque to: 15 ft. lbs. (21 Nm)
    • Fuel line bracket bolt and tighten the bolt
      1. Torque to: 15 ft. lbs. (21 Nm)
    • Water outlet
  2. Fill the engine with coolant.
  3. Test drive the vehicle to confirm the repairs.
8.1L Engine To Remove:
  1. Before servicing the vehicle refer to the precautions at the beginning of this section.
  2. Drain the cooling system.
  3. Remove or disconnect the following:
    • Inlet hose from the water outlet Water outlet and thermostat removal chevy_sub25_02-04_60_thermost_rem.gif

    • Water outlet bolts (B)
    • Water outlet (A)
    • Thermostat (C)
To Install:
  1. Install or connect the following:
    • Thermostat
    • Water outlet
    • Water outlet bolts and tighten the bolts.
      1. Torque to: 22 ft-lbs (30 Nm)
    • Inlet hose to the water outlet
  2. Fill the cooling system.
  3. Test drive the vehicle to confirm the repairs.
prev.gif next.gif

Jan 12, 2011 | 2000 Chevrolet 2500

1 Answer


It's on the left hand frame rail, in front of the left rear tire.

  1. Relieve the fuel system pressure.
  2. Raise the vehicle.
CAUTION: Refer to Caution in Cautions and Notices.

  1. Remove the quick-connect fitting at the fuel feed pipe (3).
  2. Remove the threaded connection (2) at in-line fuel filter.
IMPORTANT: Inspect the O-ring on fuel filter outlet pipe for cracks or damage. Replace as required.

  1. Inspect the fuel lines, O-rings for cuts, swelling, cracks, and distortion. Replace the lines as required.
  2. Inspect the fuel return line (4).
  3. Inspect the fuel vent pipe (1).
  4. Drain any remaining fuel into an approved gasoline container.
  1. Remove the protective caps from the new in-line fuel filter.
  2. Install the new plastic connector retainers on the in-line fuel filter inlet and outlet.
Install the new plastic connector retainers in the same position as on the old in-line fuel filter.

  1. Install the quick-connect fitting (3) at the inlet of the in-line fuel filter.
IMPORTANT: Make sure that the O-ring is installed on the outlet pipe before installing the pipe

  1. Install the threaded connection (2) at the in-line fuel filter.
Tighten the in-line fuel filter outlet nut to 30 N.m (22 lb ft) using a back-up wrench in order to prevent the nut from turning.

  1. Lower the vehicle.
  2. Tighten the fuel tank filler pipe cap.
  3. Install the negative battery cable.
7.1. Turn the ignition switch ON for 2 seconds . 7.2. Turn the ignition switch OFF for 10 seconds . 7.3. Turn the ignition switch ON 7.4. Check for fuel leaks.

Oct 20, 2010 | 1999 Buick Park Avenue

2 Answers

How to replace fuel injector 97 cavalier 2.2L

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Disconnect the negative battery cable.
Before servicing any electrical component, the ignition key must be in the OFF or LOCK position and all electrical loads must be OFF, unless instructed otherwise in these procedures. If a tool or equipment could easily come in contact with a live exposed electrical terminal, also disconnect the negative battery cable. Failure to follow these precautions may cause personal injury and/or damage to the vehicle or its components.
Remove the air cleaner outlet resonator mounting screw.
Disconnect the air cleaner outlet resonator clamp at the throttle body.
Remove the air cleaner outlet duct from air cleaner outlet resonator and air cleaner assembly.
Disconnect the crankcase vent hose clamp and the crankcase vent hose from the top of the engine.
Remove the air cleaner outlet resonator.
Remove the fuel rail bracket.
Remove the fuel injector electrical connectors by pushing in the wire connector clip and pulling the electrical connector away from the fuel injector.
Remove the fuel feed inlet pipe quick connect.
Remove the fuel return pipe from the fuel pressure regulator.
Remove the fuel rail attaching bolts.
Remove the fuel rail assembly from the cylinder head.
Remove the fuel injector retaining clip.
Remove the fuel injector.
Important Visually inspect the fuel injector to see if the upper O-ring was also removed, if not, remove the O-ring from the fuel rail assembly

Oct 26, 2009 | 1997 Chevrolet Cavalier

2 Answers

I have a 1987 Samurai. On the fuel pump there is

if the outlet you refer to is turned down, has no hose on it, is most likely the diaphram vent. standing on passenger side looking into engine compartment,this outlet is rearmost, next to firewall. leave open,nothing attached.

Oct 21, 2009 | 1987 Suzuki Samurai

4 Answers

How to replace a fuel pump on jeep wrangler (95)

i'm pretty sure jeep had their pumps in the tank. you can phone parts place to double check. If it is in the tank, you will have to drop the tank in order to access it. Other vehicles have a latch or door thing that will allow you access from the top. pretty sure the jeep does not have this. you will have to disconnect all of the hoses and hopefully your tank is almost empty or else they weigh a ton.....then just take out the old sending unit, put on a new fuel pump and put it back...simplified version, but it will give you a gerneral idea. when i first dropped mine, it took me 1/2 a day, now i can do it in about 1.5-2 hrs

Jul 23, 2009 | 1995 Jeep Wrangler

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