jaapheida968

This morning i was checking my oil level and it had a strong smell of fuel. I recently changed the oil and filter.
I drove around 500 km this week. Engine is running fine and no warning lights are coming up.

Anybody any idea about the smell?

LM964

Have you done a general poke around with a torch for any sign of fuel pipe/rail/connection leaks? Fuel smell more from front (engine bay) or rear?

jaapheida968

I did indeed a general poke around with torch and nose in the engine bay. I only smell the gas when i'm opening the filler cap or oil dipstick.

LM964

Taken it out for a drive since? And smells only when stationary or can also smell in cabing when driving?

jaapheida968

I took it out for a spin lately (150 km), the smell is only comming from the oil with the filler cap off, or the dipstick under the nose.
I discovered this 3-4 months ago when i did my oil check.

LM964

Blimey. Only sure way maybe is to have an oil sample tested (probably the cheapest way to be sure before assuming any fuel system/oil ingress somewhere and subsequent removal and replacement of parts). A new one to me.

thomasmryan

you might do a leak down test on the fuel rail to see if you have an injector that has an uncontrolled drip.

check the control vacuum line for the fuel pressure regulator for signs of fuel. test for a vacuum signal. if the regulator doesn't receive a signal, the result is higher fuel pressures.

mj951

Agree with getting an oil sample tested, here's a good source...... https://www.blackstone-labs.com/

LM964

So the injector could leak fuel to rest on the piston crown, yes? Possibly then this, or higher pressure, would allow unburnt fuel to pollute engine oil? Interesting...

thomasmryan

fuel that has not been atomized, or raw fuel, will just run down the cylinder walls. more so if the assembly isn't up to temperature.

jaapheida968

I ordered an oil test set, so coming week i hope to have some more answers about the contents of the oil....

Jfrahm

Does the engine run cold? What do the plugs look like?

jaapheida968

What do you mean by engine running cold?
The plugs i'm gonna check this week.

Jfrahm

When the engine is at operating temp, is that temp lower than it should be?

jaapheida968

The operating temp is always the same when the engine is running, nice and steady.