Hi my 2003 Nissan 350z start to blow smoke on acceleration cannot be seen when running but this only happen when the engine is hot no smoke in the morning either cold start is fine I figured only when the oil is hot please help?

 

I'm pretty sure you are beginning to burn some oil through either the valves or the rings. You might get your car to a mechanic to perform a leak down test. I would also recommend checking your oil before driving tomorrow.

 

Mileage and pics help...

 

You're burning oil. You need to check compression. --Spike

 

Yes compression test was done and all cylinder is good

 

Will the leak down test determine if its valve or rings? Thanx

 

Have you tried to get your Z to Vape? we have a vaping thread on here. Check it out.

 

Hi its 83k miles on it pics will be up soon thanx

 

Sorry im not sure what is it ill look into it thanx

 

Like other said, you're burning oil. Check the levels before you run it again.

 

If your valves are bad (burnt or the shaft is warped), you will likely hear some noise (usually a ticking sound).

If you are burning oil in the cylinders, you see some blue smoke from the exhaust.

If you see a white exhaust, your head gasket is leaking and probably because coolant is leaking into the engine and is burned inside the cylinders.

--Spike

 

Does it smell like it's burning oil? Are you losing coolant? Or losing oil?

Is there a rodent nest anywhere?......JK

 

If it's blue smoke, I highly doubt he's losing coolant.

 

Myfirstzcar, you’re alright.

 

These threads always scare me! I get a little of white smoke in the morning when it's cold. I know it's just moisture ( I've checked coolant and have done a compression test and checked my oil..well I change it but I check the dipstick every couple hundred miles) I always have a mini freak out when reading this.

 

Maybe he's color blind.
First thing to do is confirm which fluid is being lost. If the coolant level doesn't change, one can be extra sure it's oil.....which also has a very distinct odor.

 

Fair enough. It doesn't hurt being extra sure.

 

I'm still betting it's oil though.

Most head gasket issues involve a slight misfire.

 

^^ I agree with you. And, I would think that compression would be compromised if his car is burning oil, but he said his compression checks out.

What do you think he might be looking at for repairs (and cost which is probably his main concern)?

--Spike

 

I believe ny car burn oil I add oil between oil change how much is the cost for repair if its the rings I have problem with? Or should I consider engine swap? Idk thanx evryone