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Engineering mechanics petrol not pumping thru tomotor

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Is it crtical that fuel cap makes an airtight seal on this car Nissan Micra 2004 Petrol


I'm not an auto mechanic - Can't speak for every car or fuel cap, but in general there must be a vent for the fuel tank either thru a vent built into the cap or separately. A fuel tank with no vent will build a vacuum as fuel is pumped out to the engine and eventually the fuel pump will stop pumping if unable to overcome the vacuum or if powerful enough, the vacuum will cause the fuel tank to collapse. Air must enter somehow! Possibly cars these days have a filter/absorbent on a d dedictated vent to remove potential dust and moisture, but none of my cars ever had a fuel vent filter replaced. My guess is that an airtight seal is not critical on any gas or diesel tank cap.

Mar 12, 2016 | Nissan Cars & Trucks

1 Answer

Why is petrol getting into oil sump


An older model engine with mechanical pump could have a bad diaphragm leaking gas into the oil. Newer engines with electric in tank pumps with gas in the oil are probably running way too rich or have piston ring sealing issues.

Nov 16, 2015 | Cars & Trucks

2 Answers

My 2004 ford freestar hesitates and then returns to normal and t


This car is 10 years old already so many problems relating to age could be manifesting. Did/do you regularly service this vehicle? If not check all petrol and air filters, just wise to replace all at this time. An electric petrol pump could be starting to fail, replace this. Also check the petrol pump relay under the dash, replace this. My experience of "intermittent" breaking down on my 1997 VW Polo was caused by the sensor in distributor failing and then coming right again until eventually it failed permanently, - i.e. this results in the petrol pump operating and the engine turns but no spark goes to the plugs so no starting is possible! Most of these problems should be picked up easily on a computerized engine analysis machine if you still have the problem!

Aug 10, 2014 | 2004 Ford Freestar

1 Answer

Engine hard start in cold weather


Sounds like your petrol pump may be on the fritz. They are pretty easy to replace, although, if you have 0 experience on fixing cars, i would best take it to a mechanic. By "pumping" gas, you are pumping the petrol into the cylinders, where as the pump should do that automatically, after you pump it, it makes a steady flow to the cylinders. If you are planing to fix it yourself, make sure you have only 1 quater or less in your fuel tank, as it will make a mess.

Jan 04, 2014 | Ford Focus Cars & Trucks

1 Answer

Idling bad when car is hot.polo classic.2001


Tell me what engine you have, petrol or diesel

here is some things you can take a look at

Elect Connections
air in fuel
fuel non return valve
condition of fuel
air filter blockage
engine mechanical condition
fuel injectors pump timing
engine coolant temp sensor
fuel quantity adjuster / positioning sensor
injector pump
fuel pump
ecm faults

Mar 05, 2013 | Ford Explorer Sport Cars & Trucks

1 Answer

My truck will start but lacks power


If it is turning over it is probably fuel or plugs. chk yr fuel line to see if its pumping. chk the fuel filter for water in line, if so pump some thru line to ground and change filter. chk and clean plugs particuarly around the inside walls, wash with petrol, dry, clean sprak area, and return to engine. if engine runs but no power it c/be coil.

Aug 25, 2012 | 1985 Ford F150

1 Answer

Petrol put into diesel car now it wont start


Drain all the petrol on your tank and so on the injection pump by pumping it. Open or loosen small tube going into the engine from the injection pump, to drain all petrol.

Make sure that petrol are remove from the engine fuel system, change fuel filter also. After removal bleed the engine.

Feb 28, 2011 | 2002 Jeep Grand Cherokee

1 Answer

Petrol mix with engine oil


There are 2 causes of PETROL in the oil,
  • Ur mechanical fuel pump got a leak under the DiAPRAGM
  • Ur carburetor FLOODED w/ fuel and when starting it (FUEL) goes all the way to the cylinder.

Better check on those, and u can get a mechanic to assess the problem in actual!

Tell me if coud help u more!

Nov 30, 2010 | 1991 Toyota Pickup

1 Answer

Torque waterpump bolts mercedes benz


Torque wrench settings Coolant pump to crankcase/timing cover: 4-cylinder petrol engone 10( Nm) or 8( lbf ft) 6-cylinder petrol engine 23 (Nm) or 17 (lbf ft) Coolant pump to housing (Diesel engine)10(Nm) or 8 (lbf ft) Coolant pump to belt pulley: 4-cylinder petrol engine 15;11 6-cylinder petrol engine 10;8 Diesel engine 15;11 Cooling fan to electromagnetic/viscous MB(try not change pumu but viscous coupling Mercedes became cool) coupling: 4-cylinder petrol engine 25;18 6-cylinder petrol engine 10;8 4-cylinder diesel engine 25;18 5-cylinder diesel engine 10;8 Viscous fan coupling to coolant pump/bearing body 45;33 Electromagnetic coupling to coolant pump / support bracket 6;4 Radiator drain plug 2;1 Thermostat housing to cylinder head (4 cylinder petrol engine only) 20;15 Alternator mounting bracket bolts 45;33 Cylinder block drain plug 30;22 Automatic transmission fluid cooler unions 20;15

Aug 09, 2009 | Maisto Mercedes Benz Slk Diecast Model Car...

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