Inlet Valves / Intake Valves for auto

Engine auto parts: Inlet Valves / Intake Valves

Inlet valve belongs to the category of gas exchange valves, which supply the cylinders with air in a diesel engine or a mixture of fuel and air in a gasoline engine. Therefore, a channel or multiple channels open in order the unburned mixture completely or with small losses to leave the cylinder. At the same time inlet valve is subjected to less thermal stress than the exhaust valve, as compared to the exhaust gas air or mixture temperature is lower. The cylinder chamber in other cycles of the gas exchange must be sealed as opposed to inlet and gas exchange channels.

The power necessary to open the valves is transferred by a dished pusher, pusher rod, rocker arm or camshaft rocker before it reaches the bottom exhaust valve piston and upper inlet valve (dead centre). This is the measure that helps quickly to increase the gas intake and run out. Inlet valve may be closed by maximum 2 springs so that gases can flow. An inlet valve consists of a shaft and a plate with a milled chamfer of 45 °, sometimes with a smaller angle. The chamfer exactly fits the valve seat that is closed in the ring cylinder head.

Typically, the temperature in the inlet valves reaches 500 ° C and in the exhaust valves 600 ° C but not higher than 700 ° C. The valves open and close with a maximum speed of over 50 times per second. Because of high loads and corrosion inlet valves are made of chrome, silicon and steel. Sometimes the valves wear out and it is necessary to replace them. Visit our online store where you will definitely find not only valves, but also camshafts, brake shoes or oil filters for all popular car brands. Convince yourself of our quality products and the most competitive price.

How to detect malfunction of the intake valve

The component is checked in two stages. First, all systems are checked on a specialized bench with a computer.

Then, the system is disassembled, and the valve is dismantled. Inspect the component to check for absence of carbon deposit and mechanical damage. Special attention should be paid to adjusting the valve, and its position in the seat. Before proceeding to the latter, the engine is to be cooled down. Then set the piston into the top dead center of the compression stroke. Then loosen the second nut screwed after the main one, and adjust the clearance using a gauge. The optimum clearance should allow the gauge inside with perceptible effort.

Note that the valves cannot be adjusted separately from other components. So, after

replacing the valve, remember to reseat the new component in place.

You may notice that the intake valve may need diagnostics by the following symptoms:

  • the engine knocks, and other extraneous sounds are heard in all operating modes;
  • the engine misfires;
  • consumption of fuel and motor oil increased;
  • the engine works incorrectly at low rpm, and spontaneously stalls at idle.

The reasons of the intake valve malfunctions

Malfunction or complete failure of the component may be caused by using poor quality fuel or motor oil. Using low-octane gasoline leads to low anti-knock value of the fuel, which results in high loads on the piston group. Consequently, the working temperature of the engine increases. Carbon deposit is also accumulated on the valve head, which, after reaching certain thickness, detaches and gets between the seat and the valve face. This results in overheated valve head and impaired contact with the seat.

Often the reason of the component malfunction is an increased or decreased clearance between the seat and the valve. The greater the distance is, the faster the component wears out, and the engine fails. If the clearance is less than normal, the intake valve stops performing its functions. Thus, fuel does not get into the cylinders in time. Operating a vehicle with closed valves results in engine overheating and premature failure of the cylinders.

The reason of the intake valve burn-off may be a too late or, vice versa, too early ignition. Therefore, if the component fails, it is necessary to make sure that the ignition advance angle is correct.

Replacing an intake valve

Repair cannot remove even insignificant defects of the valve, therefore it is expedient to replace it.

To dismantle the component, first remove the timing belt and the camshaft cover. It is recommended to mark the sequence of rockers and compensators with a marker.

To tighten the bolts of the camshaft cover, use a torque wrench. The tightening torque should the only 10 Nm.

To make the valves wear out evenly, replace all components at once.

Popular Inlet Valves / Intake Valves manufacturers
Original Inlet Valves / Intake Valves from TRW Engine Component producer Original Inlet Valves / Intake Valves from MAHLE ORIGINAL producer Original Inlet Valves / Intake Valves from IPSA producer Original Inlet Valves / Intake Valves from FEBI BILSTEIN producer Original Inlet Valves / Intake Valves from ET ENGINETEAM producer Original Inlet Valves / Intake Valves from FRECCIA producer Original Inlet Valves / Intake Valves from AE producer Original Inlet Valves / Intake Valves from JP GROUP producer
Original Inlet Valves / Intake Valves from TOPRAN producer Original Inlet Valves / Intake Valves from ASHIKA producer Original Inlet Valves / Intake Valves from PETERS ENNEPETAL producer Original Inlet Valves / Intake Valves from BLUE PRINT producer Original Inlet Valves / Intake Valves from DT producer Original Inlet Valves / Intake Valves from SWAG producer Original Inlet Valves / Intake Valves from INTERVALVES producer Original Inlet Valves / Intake Valves from KOLBENSCHMIDT producer
Top quality parts Inlet Valves / Intake Valves for your car
Buy MAHLE ORIGINAL Inlet Valve 029 VE 30528 000 for car at low price £ 12,10
-23%
£ 12,10
£ 15,72
incl. 20% VAT, Shipping
x Inlet Valve | MAHLE ORIGINAL 029 VE 30528 000
Parts Details
  • Fitting Position: Intake Side
  • Valve head diameter [mm]: 29,5
  • Valve stem diameter [mm]: 6,0
  • Length [mm]: 100,9
  • Valve seat angle [°]: 45
  • Valve Seat Material: Chrome-silicon-steel
In stock Details
Buy AE Inlet Valve V91416 for car at low price £ 5,94
-23%
£ 5,94
£ 7,72
incl. 20% VAT, Shipping
x Inlet Valve | AE V91416
Parts Details
  • Length [mm]: 95,500
  • Material: Chrome-silicon-steel
  • Supplementary Article/Info 2: Valve stem tip hardened
  • Valve head diameter [mm]: 32,100
  • Valve stem diameter [mm]: 6,970
  • Valve seat angle [°]: 45
In stock Details
Buy FRECCIA Inlet Valve R6580/SCR for car at low price £ 8,07
-23%
£ 8,07
£ 10,48
incl. 20% VAT, Shipping
x Inlet Valve | FRECCIA R6580/SCR
Parts Details
  • Valve head diameter [mm]: 33,9
  • Valve stem diameter [mm]: 6
  • Length [mm]: 104
  • Valve seat angle [°]: 45
  • Supplementary Article/Info 2: Chromed valve stem
  • Material: Chrome-silicon-steel
  • Connector type: I
In stock Details
Buy FRECCIA Inlet Valve R6564/S for car at low price £ 6,90
-23%
£ 6,90
£ 8,96
incl. 20% VAT, Shipping
x Inlet Valve | FRECCIA R6564/S
Parts Details
  • Valve head diameter [mm]: 28,1
  • Valve stem diameter [mm]: 6
  • Length [mm]: 99,3
  • Valve seat angle [°]: 45
  • Material: Chrome-silicon-steel
  • Connector type: I
In stock Details
Buy AE Inlet Valve V94116 for car at low price £ 6,53
-23%
£ 6,53
£ 8,48
incl. 20% VAT, Shipping
x Inlet Valve | AE V94116
Parts Details
  • Length [mm]: 100,900
  • Material: Chrome-silicon-steel
  • Supplementary Article/Info 2: Hardened valve seat, Valve stem tip hardened
  • Valve head diameter [mm]: 29,500
  • Valve stem diameter [mm]: 6,000
  • Valve seat angle [°]: 45
In stock Details
Buy FRECCIA Inlet Valve R6298/SCR for car at low price £ 7,88
-23%
£ 7,88
£ 10,24
incl. 20% VAT, Shipping
x Inlet Valve | FRECCIA R6298/SCR
Parts Details
  • Valve head diameter [mm]: 31
  • Valve stem diameter [mm]: 6
  • Length [mm]: 104,3
  • Valve seat angle [°]: 45
  • Supplementary Article/Info 2: Chromed valve stem
  • Material: Chrome-silicon-steel
  • Connector type: I
In stock Details
Buy TRW Engine Component Inlet Valve 331125 for car at low price £ 22,51
-23%
£ 22,51
£ 29,24
incl. 20% VAT, Shipping
x Inlet Valve | TRW Engine Component 331125
Parts Details
  • Valve head diameter [mm]: 33,9
  • Valve stem diameter [mm]: 6
  • Length [mm]: 104
  • Material: Chrome-silicon-steel
  • Valve seat angle [°]: 45
  • Supplementary Article/Info 2: Armoured Valve Seat, Valve stem tip hardened
In stock Details
Buy ET ENGINETEAM Inlet Valve VI0030 for car at low price £ 5,94
-23%
£ 5,94
£ 7,72
incl. 20% VAT, Shipping
x Inlet Valve | ET ENGINETEAM VI0030
Parts Details
  • Length [mm]: 100,9
  • Valve stem diameter [mm]: 6
  • Valve head diameter [mm]: 29,5
  • Valve seat angle [°]: 45
  • Material: Chrome-silicon-steel
  • for OE number: 036109601S
In stock Details
  • Contacts
  • TOS
  • Privacy Policy
  • Company
  • Payment
  • Shipping
  • Return of goods
  • Replacement