Motor Vehicle Maintenance & Repair Stack Exchange
Motor Vehicle Maintenance & Repair Stack Exchange

Questions tagged [cold-start]

The act of starting a vehicle in which the internal combustion engine that is at or near the same temperature of it's environment.

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Is revving the engine to redline on idle at morning bad?

I own a Ford Ecosport Diesel Turbo 1.5 TDCI. Every morning when I start the car, I put it on neutral and rev it up to 5000 RPM for 3 seconds then bring it back to normal idling without revving and start my normal drive. The intention is to clear any…
Ethical Gamer
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Is it true that most of the engine wear during its life time occurs during a cold start up?

I have heard this idea several times, but is it true? Theories I read about why that might be true: The engine is running rich at startup because it is running in open loop, which can cause damage to the piston rings as the excess fuel wipes oil…
method
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Should I avoid full throttle when driving with a cold engine?

Apparently I should avoid full throttle until my engine temperature is warmed up fully (to 90 degrees on the gauge) Normally I just get in and drive normally after about 10 seconds, and then after about 2-3 mins I join a fast road with a hill, and…
George
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Change in exhaust note after extreme backfires--what did I break?

I had quite a morning with my 1986 BMW K75 this weekend. The plan was to ride the bike to a friends house to store it for the winter. The weather was pretty cold on this particular morning, perhaps 15*F (-9*C), and the bike refused to start, the…
mac
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Bad to run the car for a short duration, turn it off, and start up again?

Is it bad for the car to start it up in the morning, spend 10 seconds driving it out of the garage, then shut it off while I go close the garage door and then a few seconds later get in and start it up again and drive to work? I know hybrids and…
Johnny
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Preventative maintenance to avoid winter start difficulties?

Over the last 3 years I have changed my battery twice, the starter motor, the timing chain, and water pump. Still, it seems that my car doesn't start on cold weather winter days at least 3 times a year. This is especially common if I let the vehicle…
toolshed
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KTM Duke 390 - Does it have to be hot to ride?

I have a KTM Duke 390 - 2013, single cylinder 373 cc motorcycle for 4 months now. I bought it from another owner when it was around 9500 km. now It's at 12000. This is my first bike, and I'm trying to improve my abilities, technical and theoretical…
Tolga Evcimen
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Is it possible to have glow plugs on all the time for certain amount of time?

I have Audi A4 B7 2005 2.5TDI. The temperature drops below 0 °C where I live. When it's cold (e.g. starting from 5 °C) my car starts having problems starting up. When I start it in the morning everything is OK. The glow plugs turn on and the car…
mend
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What are common cold weather starting issues with cars?

Based upon the current weather in parts of the Northern Hemisphere, I would imagine there are some people suffering from all manner of cold related vehicle issues. What are some of the leading issues of getting a vehicle running in the cold? What…
DucatiKiller
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Issues cold starting diesel van

Our van has been progressively getting worse at starting up in the morning. It only has issues when the engine is cold. Initially I thought it might be the glow plugs. I tested their resistance and they are all at about 1 ohm. I have also voltage…
Leonardo Seccia
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1994 Mercedes-Benz C 180 (W202) won't start

Background My 1994 Mercedes-Benz C 180 (W202) won't start. We are in a very cold winter, but even one month ago, it was not that cold. Under the rear view mirror, there are two small lights: one is blue, the other is red. They start blinking red…
pigeon
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Startup problems: low idle RPM and stall on pressing the accelerator

My sister has a nice first generation Nissan Micra 4-speed automatic (I think it's the naturally aspirated, non-electronic carburetor version) . However, when starting it from a cold start (not necessarily cold weather, just when it's not used for a…
Sanchises
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Lack of power when cold under load

EDIT 8: Final update, I think. Using an OBD scan tool, I saw that the fuel trims were still very low to adjust for the vacuum leak. I reset the ECU and the trims went back to around 0, and the engine is running much more smoothly. I think we can…
Spivonious
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How would a camshaft start moving during a cold start?

I want to know how would a camshaft ( and valves by association ) start moving on a cold start up? What gets them running and moving. Are there something they connect to to get them going?
user15938
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50cc Chinese Scooter GY6 QMB139 hard start when cold

My 50cc Chinese Scooter GY6 QMB139 hard start when cold, anything below 65 degrees F. Last spring when I got it I had nothing but trouble, fixed the following and it ran perfect all summer until it got cold. 4 stroke. Cleaned carb (many…
Robin Kimball
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