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4

You said "valve gaskets" but I'm going to assume you actually mean the valve seals. Since you are seeing a small puff of smoke sometimes during startup and when you are accelerating, these are usually caused by two separate issues, both of which you are mentioning. Start-up puff of smoke can usually be attributed to bad valve seals. This is because oil ...


3

The culprit is usually shot piston rings. They act as a buffer between the combustion chamber and the bottom half of the engine. If they go, oil can seep into the combustion chamber and get burned up along with the fuel. To fix this, they'd have to take the entire engine apart to get at the bottom of the pistons. It's not a cheap procedure. Or maybe you're ...


2

Depending on the colour of the smoke that is produced from the exhaust it could be different sources, have you had a valve cover replacement done on the car? I've worked on some cars that have leaking valve covers where the spark plugs are located and this causes issues with oil seeping into the cylinders, which could be a source of smoke, and oil loss. ...


1

I asked this same question to the workshop that performed the headjob on one of my cars and they said that apart from a bit of smoke, it wouldn't be anything to worry about. As long as there is enough oil in the engine. They could have told me to give them more money, but they didn't.


1

Corsa's (actually Vauxhalls/Opels in general) sometimes have noisy hydraulic lifters. I drove mine for 60 thousand kilometers with this noise before I upgraded to a Turbo Coupe and gave the car to my mom. No problems so far. The Coupe had the same stupid tick. Again, I drove it for 30 thousand kilometers before trading it in for a Subaru Forester XT. Only ...


1

I think this is a dual overhead camshaft engine. In that case, one of your lifters or springs may be going bad. This would slow down the return of the lifter as the cam moves away from it. that would create a momentary space and then a click when the lifter contacts the cam again. Just a guess. Your mechanic probably has a modified stethoscope that he (or ...


1

In my particular case, the cause seemed to be low oil and an oil weight too heavy for the temperature. I only checked the oil level so late because my low oil light never came on, so the oil must have been low enough to cause pressure drop, but not so low as to trip the oil level sensor. Also, I see reports online of 10W oil being too heavy for temps ...


1

I make no claim to be a Subaru expert but I have become aware of issues with the variable valve timing on GM vehicles. It seems some vehicles with this type of valve train are sensitive to oil viscosity. Oil that is too thick or to thin can result in poor performance. Is it possible that you added the wrong type of oil? If oil was induced into the exhaust ...



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