Is warming up essential from cold start?

[axy]

Then it behaves just like a naturally aspirated engine. I had an Opel Astra 1.7 DTI before, with peak torque from 1800 to 3000rpm. It had no punch below 1500 but still no problems down to 1000.

Unfortunately, I drive often company cars that are usually 1.3, 1.4 turbo diesel pool cars (Corsa, Fiesta, C3, you name the crap, I drove it...) and for longer trips things like Octavia, A3, A4, Golf, Vectra etc. For example, I`ve had brand new A3 1.9 TDi/130 hp STALL on me when I was driving slowly in 1st gear and then turned on air con. I guess it did not have enough power both for turbo and air con and it simply shut off.

It is interesting that I have Kia Pro Ceed 1.4/109 hp with VVT and I can tell you that down to 1000 rpm it is much smoother than most turbo diesels, while diesels are touted as having high torque on lowe revs etc. Of course, elasticity in gears is better for turbo diesels...

[Peters]

You really are dumb .

They're definitely using 302s again dumb ass

[Peters]

Where do you get your information? Wikipedia? I think you're the one that needs to do some learning, dick lesasso.

[axy]

Kiss your mommy (aka girlfriend) with that mouth, De'wayne.

[ts1]

I guess it did not have enough power both for turbo and air con and it simply shut off.

The Astra automatically turned off the A/C when riding at WOT and on the other extreme increased idle speed.

It is interesting that I have Kia Pro Ceed 1.4/109 hp with VVT and I can tell you that down to 1000 rpm it is much smoother than most turbo diesels

Of course, a Diesel engine has a high compression and is running hard. It took some time to make them smooth enough for Porsche or Mercedes S. Still Rolls Royce cars don't use them.

[Peters]

Can't argue with that can you

Guess what everybody, axy doesn't know everything. Big surprise!

[axy]

The Astra automatically turned off the A/C when riding at WOT and on the other extreme increased idle speed.Of course, a Diesel engine has a high compression and is running hard. It took some time to make them smooth enough for Porsche or Mercedes S. Still Rolls Royce cars don't use them.

I can`t stress enough how much I hate diesel cars. 

[jordan quannon]

Sit on it, Start it, Ride off.  If the engine is obviously running cold then I try to keep the throttle where it seems to be running the smoothest.

I don't like idling to warm up an engine. 

I start and go.  If it's running without strange noises, the oil is getting around, and that's all you need.  Actually, I start it before I put on my helmet, then go.

Richard L.

My People S 125 has an automatic choke so I just get on her and go.

I am with ts1.
"Warming up" engine of a stationary vehicle is waste of time, money and energy (literally).

That's the best you can do for the engine - warming up with medium load.
Idling is useless, wasted fuel and wasted waering and pollution.

All wrong the oil in your engine needs to warm up if you dont warm it up it is not doing its job and will cause damage over time the ideal operating temp is 80 degree c. And as for it been a wast of fuel i have £2 of fuel in my tank and have been starting my bike once a week for half a hour to 45 mins for the last 6 month and and would guess it used 50 pence worth of fuel

[axy]

All wrong the oil in your engine needs to warm up if you dont warm it up it is not doing its job and will cause damage over time

Actually, what you just said is completely incorrect.

Multigrade oils "do their job" just the same at the lower and upper temperature extreme.
For example, 10W-40 usually used in Kymco "does the job" equally at -20 C and +100 C

Did you read this whole thread? I am asking because I already wrote this in the thread.

So, enough with fairy tales.

[ts1]

All wrong the oil in your engine needs to warm up

And how do you warm up the engine? My scoot has no park heating.
If I have to drive and turn the engine, I expect some benefit from the unavoidable fuel consumption and wear.
Don't think that you have no wear during idling!
Too, the oil pump usually rotates with the engine and may not provide enough oil pressure during idling.
The Mercedes car has an oil pressure indicator and alert. My scoot hasn't.
I go with the manufacturers and engineers advice and 150 years experience (in Germany).

[Peters]

More RPMs = More wear

You guys act like idling these things for 5 minutes uses so much fuel

[juice]

Well , this dead horse has certainly been beaten to a pulp . I'll be glad to hear the last word on this........ even if it is from Crotia .

[ts1]

More RPMs = More wear

More rpm = more oil pressure = +/- ? wear
But anyway: Idling = useless wear.

You guys act like idling these things for 5 minutes uses so much fuel

Not only the fuel (although $2 / litre - not gallon! - is common in Europe), but angry neighbours and officers (and the fine equates to about a tank content).

Another long term concern is the our basic human right for clean air.
Our cities must monitor the pollution and react if the emission is too high. (US should know about claims exceeding the budget of a city.)
So our local governments bann "dirty" vehicles (which don't comply with the next-to-last emission standard) from entering the town or even generally prohibit every 2 stroke vehicle.

[wordslinger]

..I warm mine up simply because i like to make sure the autobystarter has shut off before i take off down the road...

..why?..because i want to!

..why shouldn't I?..i've read nothing here that says i shouldn't...

..is it hurting my scoot?..well, hell no..no more than i hurt it every day on my 35 mile WOT commute to work and back..



peace

[streido]

Im with Wordslinger, my and it seems most if not all Agilitys dont run well if the autochoke is still on when you begin riding, but other scoots may be different. I know on Vespas with the manual choke i get on and just ride, pushing the choke in a little as it warms more. Each to his own, just do what works for your own scooter, or car.