Cold starting
 

With the recent chilly temps I am having some difficulty with starting the BRZ on cold mornings. By cold I mean -30* or colder. The car is plugged in, but it does not seem to either spark, or deliver fuel. There is no encouraging sounds of attempting to fire. Once the ambient temps 'warm up' to about -25* or so, it starts normally. We get a few days like this every year and this is the first year this has happened. So something has changed. Any ideas?
:iono:

Is it stock?
Cranking at normal speed?

Plugged in? Plugged into what?

I assumed


http://www.ft86speedfactory.com/oem-...l#.XFSepHmWy70

dumb question but is your fuel line frozen? ive heard fuel can start to freeze as high as -40f so if you have a bit of water in it you could be in trouble. i added 3oz of stabilizer and injector cleaner to my tank and started right up at -9f yesterday.

Does nothing to keep the battery warm...

If it's cranking at normalish speed, then it's probably not the battery. I'd add some gas line antifreeze and see if it helps.

If it's cranking really slow, then it's like the battery either dying or freezing.

I have a 2006 xB that I bought new. I hit a deer a couple of years ago with it on my way home from a gig. Cosmetically pretty bad but nothing functional was damaged (except a headlight, which I replaced with a little six LED light bar). It has well over 200k on it now and runs like new. If there is a hint that salt or snow may be hitting the roads, that becomes my commuter.


It's so embarrassing my wife refuses to ride in it, but it saves my FR-S from the bad stuff.

Hey, LotsaMiles - did your brain slip a cog? - :eyebulge:


:D


humfrz

You're up, there dodj - :)


humfrz

Yes, sorry, left town for the weekend.
The car is completely stock. It turns over at normal speed.

Plugged into a 120vac outlet......
Battery has lotsa juice to continue cranking.
So it is spark or fuel, but I'm not sure which. At -25* it is fine. So I'm thinking it is not fuel freezing? But why would cold temps interfere with spark? Electricity likes it the colder it gets.

https://en.m.wikipedia.org/wiki/Flash_point


At -30 your getting close to the flashpoint of gasoline where its vapours wont ignight


Also the oil is very cold and thick and may restrict cranking rpm of motor

Electricity does like the cold but that's at liquid nitrogen temps and has more to do with conductivity and lowering resistance.


You have to be sure your battery is outputting enough CCAs. Also you might need more than just a block heater, maybe adding a oil pan heating pad would help. Also test the block heater as well to ensure it's actually properly heating the coolant.


If you weren't getting spark I'm pretty sure you'd throw a code. I'd check the fuel pressure at those temps.

Hmmm. Didn't know that. However, don't think that is the root cause of my failure to start. (Most vehicles around here started in the same temps)