[cstmx_ryder]

Got SES light all if a sudden when cold starting my car....car idles like shit and started spewing white smoke and it smelled like burned gasoline.....

Here are the codes:

10700 multiple cylinder misfire?
10701 cylinder 1 misfire
10702 cylinder 2 misfire
10927 fuel pump plausibility

I've never had white smoke associated with misfires before. Is there something else to the smoke?

please chime in.

TIA

[N54bimmer]

How many miles on spark plugs and injectors?

[cstmx_ryder]

Four thousand or so miles in the injectors, and the plugs are two weeks old.....so IDK. lol

Originally Posted by N54bimmer

How many miles on spark plugs and injectors?

[Naptime]

Any mods?

[cstmx_ryder]

FBO

Changed both VANOS solenoid two weeks ago too.

Originally Posted by Naptime

Any mods?

[cstmx_ryder]

Ok, so I decided to record a clip of what I was experiencing......See for yourselves. I just changed the plugs 2 wks ago and same with VANOS solenoids.

Two days ago, it was spewing thick white smoke out of the exhaust, and then the car started having REALLY rough idles......

The garage smelled heavily of gasoline when I turned off the car....I'm fully catless, but it smelled WAY worse than that, and I can definitely tell the difference.

Please let me know what you guys think is wrong with my car.

TIA

[NiVeDh]

If I had to guess, HPFP and/or injectors are going.

[cstmx_ryder]

Ya, that's what it seem like to me. But I don't remember having misfires when I had my previous hpfp malfunction......huh.

I hope it's the hpfp........

[N54bimmer]

take off all mods and go to dealer. I am 95% sure its the hpfp...the way it was it was begging for more fuel...yeah your pump is dead!

[s2k_335i]

Replace pump?

[gian335]

injectors!!!!! thats exactly how mine ran, when 5 out of the 6 injectors failed, it would barely run and ended up shutting down, thick white smoke, that just stunk up my whole garage kinda smelling like coolant. your plugs are probably fouled aswell due to the bad injectors

if your getting white smoke, its not fuel pump, its injectors trust...

[tibra1]

Originally Posted by cstmx_ryder

Four thousand or so miles in the injectors, and the plugs are two weeks old.....so IDK. lol

^injectors r new and failed after 4K?? what is going on there..

[blacknbean]

i would atleast take out the procede. then go from there.

[cstmx_ryder]

Well the car's out of warranty, so should I just tow it to the dealers or an indy shop to see if it's the hpfp?

Here's the thing, if I tow it to the dealers and it is hpfp related, then it's covered. But if it's not, at least I'll know what's wrong with it, but I'll have to tow it back to the indy shop to get it repaired.....

But if I tow it to the indy shop, it'll cost less to find out what's wrong with it. If it's the hpfp, I'll have to tow it back to the dealers. If it's something else, obviously I'll just leave it there and get it repaired....

So what do you guys think?

[tibra1]

Yea i say remove ur piggy first and see how the car runs

[Sparky66]

My car ran just like in that video when the pump died...........don't you guys have an extended 10 year warranty on the pump

[JacksonHandy]

Originally Posted by cstmx_ryder

Ok, so I decided to record a clip of what I was experiencing......See for yourselves. I just changed the plugs 2 wks ago and same with VANOS solenoids.

Two days ago, it was spewing thick white smoke out of the exhaust, and then the car started having REALLY rough idles......

The garage smelled heavily of gasoline when I turned off the car....I'm fully catless, but it smelled WAY worse than that, and I can definitely tell the difference.

Please let me know what you guys think is wrong with my car.

TIA

I just had my HPFP replaced under recall, and have been experiencing an unstable idle just like yours. I have no mods on right now other than an SSK. I'm going to the dealer tomorrow to see if it will replicate. I hope its not an injector and new pump thing. Car ran like a champ before they changed it!

Also, my turbos whine like a mofo, loud as hell, so I'm going to show that to them too.

[C4sF80M3]

Originally Posted by cstmx_ryder

Got SES light all if a sudden when cold starting my car....car idles like shit and started spewing white smoke and it smelled like burned gasoline.....

Here are the codes:

10700 multiple cylinder misfire?
10701 cylinder 1 misfire
10702 cylinder 2 misfire
10927 fuel pump plausibility

I've never had white smoke associated with misfires before. Is there something else to the smoke?

please chime in.

TIA

Did it smell like burnt gasoline or unburnt gasoline? It sounds like you're not getting proper ignition from all cylinders. I would check the plugs and make sure the coil packs are working properly. You can disconnect them individually while the car is running to see which disconnects cause a change in engine running, and which ones that do not. The ones that do not are your problem cylinders. Based on the codes, you should probably just check the first two cylinders. Pull the plugs to see if they are wet instead of dry. You can try swapping coil packs around to see if the problem moves to a different cylinder.

[cstmx_ryder]

Originally Posted by Sparky66

My car ran just like in that video when the pump died...........don't you guys have an extended 10 year warranty on the pump

Yes we do! I'm hoping that's the issue.........God I love owning bimmers, wouldn't have it any other way lol......

Originally Posted by JacksonHandy

I just had my HPFP replaced under recall, and have been experiencing an unstable idle just like yours. I have no mods on right now other than an SSK. I'm going to the dealer tomorrow to see if it will replicate. I hope its not an injector and new pump thing. Car ran like a champ before they changed it!

Also, my turbos whine like a mofo, loud as hell, so I'm going to show that to them too.

But did your car spew thick white smoke prior to it having rough idle? Mine did.......That's what I thought was strange. Before when I had hpfp failure, it just had long long cranks and idle rough, and that's about it. But this time is a little different, that's why I'm concerned.....

Originally Posted by c4s335i

Did it smell like burnt gasoline or unburnt gasoline? It sounds like you're not getting proper ignition from all cylinders. I would check the plugs and make sure the coil packs are working properly. You can disconnect them individually while the car is running to see which disconnects cause a change in engine running, and which ones that do not. The ones that do not are your problem cylinders. Based on the codes, you should probably just check the first two cylinders. Pull the plugs to see if they are wet instead of dry. You can try swapping coil packs around to see if the problem moves to a different cylinder.

Actually, it smelled like unburned gasoline.....What does that mean?

Ya I think I'm going to check the coils and plugs on the cylinders that was misfiring.

As far as checking your coils, you said I can unplug one at a time to see if that cylinder/coil is affecting idle? Wouldn't that throw a code?

What does it mean if the plugs are dry or wet?

Also, should I just tow it to the dealers banking on the fact that it's a hpfp issue. Or should I tow it to an indy shop that worked on my car to have them make sure that hpfp is the problem. I just don't want to tow it to the dealers and find out that it's the injectors or something that's not related to hpfp. Because then, I'd have to pay for them for the time for diagnosing my car. Tow it back to the indy shop and have the injectors installed there......Just trying to find the most cost efficient way to approach this.

TIA

[awd]

Unburned gas should be spark. The gas is not getting burned. I would check spark first.

[faded67]

I believe the HPFP is warranteed to 100K miles/Ten years so if its the HPFP you should be good.

Originally Posted by cstmx_ryder

Well the car's out of warranty, so should I just tow it to the dealers or an indy shop to see if it's the hpfp?

Here's the thing, if I tow it to the dealers and it is hpfp related, then it's covered. But if it's not, at least I'll know what's wrong with it, but I'll have to tow it back to the indy shop to get it repaired.....

But if I tow it to the indy shop, it'll cost less to find out what's wrong with it. If it's the hpfp, I'll have to tow it back to the dealers. If it's something else, obviously I'll just leave it there and get it repaired....

So what do you guys think?

[C4sF80M3]

Originally Posted by cstmx_ryder

Actually, it smelled like unburned gasoline.....What does that mean?

Ya I think I'm going to check the coils and plugs on the cylinders that was misfiring.

As far as checking your coils, you said I can unplug one at a time to see if that cylinder/coil is affecting idle? Wouldn't that throw a code?

What does it mean if the plugs are dry or wet?

Also, should I just tow it to the dealers banking on the fact that it's a hpfp issue. Or should I tow it to an indy shop that worked on my car to have them make sure that hpfp is the problem. I just don't want to tow it to the dealers and find out that it's the injectors or something that's not related to hpfp. Because then, I'd have to pay for them for the time for diagnosing my car. Tow it back to the indy shop and have the injectors installed there......Just trying to find the most cost efficient way to approach this.

TIA

Unburned gas means that either too much fuel is being sprayed and it can't be consumed, or that not all of the cylinders are firing and the unburnt fuel is just coming out of the tail pipe. I'm guess the latter is the case and that is usually caused by bad spark plugs or a bad coil pack.

Wet plugs means that the plug is not firing. Dry means that it's working correctly, or not getting fuel. But given your description I would say that dry means that cylinder is fine.