Misfire Count: Ultra Healthy or Just Typical?

[Satin]

Those are misfire counts for the last 10 trips read from the OBD reader.

Car details: 1.5L gasoline turbocharged with direct injection system

The engine has a compression ratio of 11.5:1 per owner manual.

It’s a chinese vehicle but the engine is American technology, china cannot produce auch technology but looks like the americans sold it to the chinese after they have decided to pivot to only trucks and suvs

I live in the Gulf and I use 0w20 oil and recently switched fuel from RON 95 to RON 98

OCI: 3k miles

 

[Johnny248]

Doesn't seem normal to me. Curious what Chinese vehicle with American engine technology is?

 

[Satin]

Doesn't seem normal to me. Curious what Chinese vehicle with American engine technology is?

Every engine has a normal, slight amount of misfire (negligible)

As for the engine information

Check out this wiki link:

https://en.wikipedia.org/wiki/GM_small_gasoline_engine

 

[97prizm]

Those are misfire counts for the last 10 trips read from the OBD reader.

Car details: 1.5L gasoline turbocharged with direct injection system

The engine has a compression ratio of 11.5:1 per owner manual.

It’s a chinese vehicle but the engine is American technology, china cannot produce auch technology but looks like the americans sold it to the chinese after they have decided to pivot to only trucks and suvs

I live in the Gulf and I use 0w20 oil and recently switched fuel from RON 95 to RON 98

OCI: 3k miles

View attachment 321936

View attachment 321937

Make and model of vehicle? Is this a Ford derivative engine?

 

[Satin]

Make and model of vehicle? Is this a Ford derivative engine?

This is a GM engine

Same as the one on Malibu 1.5 T and some other small SUVs such as equinox

 

[Johnny248]

As for the engine information

Check out this wiki link:

https://en.wikipedia.org/wiki/GM_small_gasoline_engine

Ugh. I hate these engines.

 

[zzyzzx]

I would not waste my time trying to figure out these misfires as the level of misfires is so low that it's going to be too hard to figure out the cause.

 

[Astro14]

Year, Make and Model of the car would help.

 

[JavierH19]

Do you feel any misfires driving it?

 

[bullwinkle]

This is a GM engine

Same as the one on Malibu 1.5 T and some other small SUVs such as equinox

It's probably an MG. Penny pinchers in my office bought a GMC Terrain with one of these (must have been cheaper than the Pacificas we were buying)-total junk, spends more time at the dealer than on the road. OP-I wouldn't worry about that few a number of misfires, those numbers seem good.

 

[AdmiralYoda]

Year, Make and Model of the car would help.

It is clearly a secret. Something Chinese, with something GM. With a GM engine similar to other GM's with GM engines.

 

[D60]

I don't know if misfires are more common on these little turbos with DI?

Personally I'd wait until it hits whatever threshold triggers a CEL, which may be never

 

[DemoFly]

Totally normal.

 

[GMBoy]

Misfires ideally should be 0 but in real life you will see low numbers like a 1 or a 2 every now and then - NOT continously and NOT the same time in all cylinders so something is wrong. How old are the spark plugs?, is the MAF ok? and do you have any vac leaks? When I test drive and watch misfires I never see that high in all cylinders - not normal. Heck you have 24 in one cylinder!

update: I just reread and you say that is a cumulative of 10 trips so I am ok with that - but if those numbers come up in a single trip you need to start looking.

 

[Chris142]

Torch spark plugs?

 

[GMBoy]

Torch spark plugs?

That was good thought! Those Chinese engines almost always have a Torch in them and they are not the best for sure!

 

[TiGeo]

Unless there is a driveability issue or CEL etc. Send it/normal.

 

[SC Maintenance]

I tried to find my screen capture when I did have a misfire that wouldn't fire a code or a pending code and I can't, but it was like 12 on the cylinder with a misfire and I think 2,1,0,0,0 on the others, or something like that.

However you would really need to compare with a like engine. A drive cycle can be pretty long, so even 24 in like 30 minutes isn't really that many I suppose.

 

[TomYoung]

This post is BITOG in its worst form: everybody has something to say, nobody knows the answer

 

[willbur]

This post is BITOG in its worst form: everybody has something to say, nobody knows the answer

This is called "brain storming" and is an effective road to finding a solution, at least in my experience. You certainly have nothing to contribute