Why does my Car start when the engine is warm?
Second possibility also has to do with the injectors. When worn they can get out of resistance spec from the internal wires developing an open condition that gets exacerbated when the engine is warm thus demanding too much current to jump the gaps to fire which would also cause a warm start issue.
When to start the engine after oil is warm?
Typically, the recommendations are to start driving after few seconds (after the oil is everywhere in the engine) and avoid high RPMs and high throttle openings until the oil is warm. This means only about 25% of the engine’s power should be used, which may be challenging for small cars.
How long does it take to warm up a diesel engine?
The system typically makes the driver wait around 10 seconds while the plugs warm up the engine. Once the correct temperature has been achieved, the computer will then let the driver start the engine.
Is there a check engine light for a warm start?
No check engine light, normal running vehicle, just rough starts that occur when the car is warm. Just looking for ideas, but from the sounds of some forums as well as product reviews, this seems like an entirely plausible solution. It sounds as if a different problem is actually more likely… an EGR valve.
Second possibility also has to do with the injectors. When worn they can get out of resistance spec from the internal wires developing an open condition that gets exacerbated when the engine is warm thus demanding too much current to jump the gaps to fire which would also cause a warm start issue.
The system typically makes the driver wait around 10 seconds while the plugs warm up the engine. Once the correct temperature has been achieved, the computer will then let the driver start the engine.
When to allow an engine to heat up?
You should allow your engine to warm up a bit. If the temperature is exceedingly cold, say -10c, you would want to allow an extra minute or two to heat up and even out the temperature between components a bit.
Do you always let your car warm up?
Yes you should always let your car warm up until it is atleast throwing heat your engine needs a chance to get the oil circulated through it…. and your transmission is also warming at the same time… many people that dont warm up there cars they complain about having issues with it….
When does my Car start in the morning?
My car has done more than 300,000 kms, she starts perfectly first thing in the morning. After I leave it running for a while, it most of the times (throughout the day) takes about 5 seconds to crank before actually starting. Once started it runs fine. Note: this happens intermittently throughout the day.
Why does it take so long to start a car?
This is where fuel system components or supply lines are routed close to hot components and not adequately shielded. This can cause fuel to effectively boil in the fuel lines so when you attempt to start the vehicle, it is massively lean until the point where cool fuel pumped up from the tank reaches the fuel system.
Do you have to warm up your car before you start it?
Do You Need to Warm Up Your Car? The answer is almost always no. Thanks to the way modern cars are built, it’s no longer necessary to let your car warm up before you start driving. And remember, once you have started it, avoid excessive engine revving – that’s no good for the engine.
Do you need to warm up your car when idling?
You will use less gasoline restarting the car than when idling, which is why manufacturers have installed automatic stop/start technology on a number of vehicles. Allowing cars to warm up on cold days is a tradition that goes back decades, to the days when vehicles had carburetors.
Why does my car not start after running errands?
However, the car will sometimes not start after running errands over a few hours (e.g. going from store to store with about a 10 minute drive in between, then parked for 1/2 hour.) When I come back out to start the car, it turns over, but then sputters out and stalls, unless I keep my foot on the accelerator.
Why does my foot on the accelerator keep the car running?
The fact that your foot on the accelerator will keep it running at these times suggests a flooding condition. You very well may have a leaky fuel pressure regulator or fuel injector dumping fuel into the motor when the car is off. Have the mechanic check these things.
Why does the Cold motor start longer than the warm motor?
Reason being, with bleeding injectors, the longer they sit, the more fuel gets dumped into the cylinder (until all the pressure is bled off). The OP would see the issue more on the cold side than on the warm. Also, there shouldn’t be any “gaps to fire” in the injectors. If there are, they wouldn’t fire at all.
Why do engine make knocking noise when cold started?
It’s like a clacking or grinding sound, almost like if something was touching the fan, and it gradually go away as the engine warms up until it’s running smooth. I think you may be dealing with engine sludge. It blocks passages when oil is cold, but hot oil begins to penetrate through the mess.
When does the engine knock noise go away?
Some of the above vehicles may exhibit an engine knock noise that begins in the first 19,000-24,000 km (12,000-15,000 mi) of use. The knock noise is most often noticed during initial start-up and typically disappears within the first 5-30 seconds (may last longer in extreme cold temperatures).
Why does my car starter not crank when it’s Hot?
If your starter easily cranks a cold engine, but “drags” or cranks very slowly when hot, there may be a “heat soak” problem. Before you condemn the starter as bad, you should perform a system diagnosis of the battery, cables and starter.
Why does my car not start in the morning?
Used best quality fuel system cleaner 3-4 times when tank was empty (to diagnose the problem) Recently changed oil/oil filter (to make sure I’m using correct viscosity oil) The problem is still there. The reason why I’m not leaning towards fuel pump / filter is because first thing in the morning it starts perfectly.
What should I do if my car cooling fan starts running?
You can do this by shutting off the engine, putting on some old clothes and gloves, and making sure nothing is dangling from your body that could get caught in a part of a cooling fan that suddenly decides to start running, even thought the engine is off.
Why does my car not start after warm?
Car will sometimes not start after warm. When i start my car, for the first time during the day- I have no problem. When I go somewhere and shut it off, sometimes it won’t resatrt. It doesn’t seem to matter what the weather is outside, it just does it when it feels like it.
Why does my car stall when it gets hot?
My car has an automatic transmission. It sound like the fuel pump is stopping after it gets hot. A problem with the pumps starts when it begins to stall intermittently and get worse and worse over time. It may start up and go for a while and stop again. The same problem can happen to the ignition system module.
Why does my car AC blow cold air then blow warm air?
But that cold air turns warm fairly soon after because the high side pressures build to the point that the high pressure switch shuts off the compressor clutch. Once pressures equalize, the high pressure switch allows the compressor to start up again. The cycle repeats over and over, providing a short period of cold air, followed by warm air.
When does a truck stall when it gets warm?
Q: Hesitation/stalling when engine gets warm. Hesitation/stalling when engine gets warm, Usually first it hesitates but it tents to take about an hour of driving before it starts hesitating. Once it starts it will not stop anytime the truck needs more power to go up a hill or to pick up speed.