What are the some of the causes a vehicle will not start
in minus 30 degree weather?
1) Battery is one year old and in good condition......till I drained
it cranking the vehicle
2) Gas tank 3/4 full
3) Castrol GTX 10/30 oil
4) Fresh anti freeze after flushing a couple of months ago
60% anti freeze 40% water good for minus 40 degrees.
At my home when temperature drops below minus15 degrees
I plug it in for 4 hours overnight using a timer and never have
any trouble starting the vehicle.
I got caught at my place of work yesterday when the temp dropped
to minus 30 degrees with my vehicle outdoors all day. When I went to
my vehicle after work and tried starting it, the engine sounded like
engine sounds on a bitterly cold day when you have not had the block
heater heat the block. I discharged the battery after many minutes of
trying to start the vehicle. Got some Cold Start spray and sprayed it
down the throat of the carb and got someone to give me a boost still
There were a few times the engine almost started.
Is the oil thickened too much on account of the cold?
Not enough play between piston rings and cylinder walls?
Gasoline lines frozen and gas not flowing?
Have never had this problem before.
Your input appreciated
Im in a much warmer climate so its a guess but what happens to the gas
when it gets that cold ?. does it go jelly like ?.
current temp here is 32 Deg C and 50% humidity and a little overcast ,
we will have some light rain later in the day ,
sucks huh :_)
Denny B wrote:
-30 temperature will cause any moisture in the fuel lines, filter, and such
to freeze. I have had this happen, and I solved the problem by using
"heet", an additive to prevent freezing. I have also had a fuel pump go out
on a -20 day, it was idling normally, and just died, no warning. Check out
If you haven't changed the spark plugs in the last couple of years
this makes a tremendous difference when it is -30.
You need to have fresh plugs and the oil already suggested
will help. Clean your battery terminals even if it was done
recently. If your starter is old and tired this needs to be
Throw a bottle of HEET in the gas tank, switch to 5W30 synthetic oil
(your choice), and park the car pointing away from the prevailing wind.
Use the Cold Start spray before you start cranking it.
Denny B wrote:
Could be something as simple as needing a tune up. But you need to check the
choke and pull off. The 10/30 oil is ok, you could try a 5/30, but I don't think
that will make a difference. You say the battery is one year old, but how are
the cables/connections? Is it the original starter?
I'm from Minnesota. Once a battery has drained and froze, it will never
be the same-doesn't have the cranking power or stamina even after
recharging. It usually has a noticeable bulge on either one or both
sides. An engine that old usually has bad compression and what we do is
pour a little oil in a quart of gas and pour it into the carb to help
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