2003 Volkswagen Passat 2.0 Turbo lack of oil pressure.

2003 Volkswagen Passat 2.0 Turbo lack of oil pressure.

2003 Volkswagen Jetta comes in with customer complaining about lack of oil pressure. We checked the oil presuure sending unit and gauge which were good. We hooked an external oil pressure gauge and found that the pressure was same as with the gauge on the vehicle.

The most common causes are low or lack of oil, bad oil pump, clogged oil pickup, worn main or connecting rod bearings, could be a bad sending unit or gauge.

Clogged oil pickup

Clogged oil pickup

We decided to drop the oil pan and check for metal particles or restricted oil pick up, low and behold we found the screen on the pick up clogged with silicone. There must have been an oil leak from the oil pan gasket and someone used too much silicone to seal the leak. Silicone should be sparingly used when sealing engine parts especially where oil flows through.

Clogged oil strainer

Clogged oil strainer

Engine oil is sucked into the oil pump from the oil pick up filtered by the engine oil filter. The oil then flows through the main oil gallery into the main and rod bearings and the cylinder head.On some vehicles the oil also flows through an oil cooler which cools the hot engine oil. Engine oil is available in different viscosities 0-20,5-30,10-30 are the most commonly used viscosities. There are synthetic engine oils available which contain some special additives to clean and extend the life of engine parts.

The four common functions of engine oil are cooling the engine parts by absorbing the heat,assimilating and dispersing carbon, sealing piston rings,lubrication internal engine parts.

Get a FREE Quote Now!

Enter your info and 1 of our trained technicians will contact you shortly.