Euro K24 engines are temperamental

[yfin]

I mentioned to EuroAccord13 yesteday that my Euro (and probably all Euros) have a personality disorder. On some days the engine wants to rise in revs incredibly fast, other days it is just average, some days it is just damn slow to rise revs etc.

Now - temperature is definately a factor but it can't explain why my car yesterday was INSANE. Seriously, it was like a bull and was more toey than ever before. Today - it is back to normal. Go figure. :thumbdwn:

Fuel level - also makes a difference - as does the oil in the car and how fresh it is. I ran on Optimax for a week and it didn't run as good - back to Ultimate and it loves it.

Kms on the odo - i am at 18.5k now - it is much freer but still doesn't explain the personality disorder :D

Does anyone else have a Euro that needs therapy? I have never had a car that is so different day to day, week to week.

[exISeuro]

AMEN ! *Raises his arm vertically in the air like a little school kid "me me"*

Although my car seems to go like a pig on ultimate, better on optimax & vortex 98 but best on synergy 8000.

I always thought this condition was just in my head (and im sure some of it is) cause it never seemed to happen to others, while i noticed every little detail.

Unfortunately i dont get the more responsive feeling as often i as i get the lethargic feel.

One way i find to invoke a great feel is not to drive the euro for a few days, when you get back in, baby her/him and it'll be great. Alternatively you can go go-karting like i did last night and get back into the car and feel like you're in heaven :)

[Slugoid]

Haha, I think my Euro is tempermental at times. Car runs the worst with Optimax, better with Ultimate and the best with Synergy 8000. Runs better in the cold compared to hot. The reason for these changes, I reckon, could be the ECU, since it does monitor throttle behaviour and will chance according to how the driver drives.

[EuroAccord13]

My car hates carrying passengers, hates changing gears below 2500RPM, hates rainy days, hates rice lancers, hates Falcodores... :P hheheheheheh....

Most of all, it shows it's temper best when she thinks I changed gear from first to second wrongly, she bogs down on me to tell me "LOSER! Try again!"

[coladuna]

Haha, I think my Euro is tempermental at times. Car runs the worst with Optimax, better with Ultimate and the best with Synergy 8000. Runs better in the cold compared to hot. The reason for these changed, I reckon, could be the ECU, since it does monitor throttle behaviour and will chance according to how the driver drives.
Uh... ofcourse the car runs better in cold weather. That applies to any car.

[euro77]

My car is the same.
It might have something to do with the electronic throttle, as I read (somewhere) that the electronic throttle adjust to your driving style. If you step hard, it will rev hard. but then again, sometimes I step it really hard and the rev don't want to rise. I have to downshift to let it rev quickly again. Must be because of the electronic throttle I must say.

[EuroAccord13]

Yeah, I read somewhere that it's also the electronics of the car doing that mainly because of the emmissions as well....

[ixl1007]

Hiya Guys,
Dumb question, Can anyone tell me which Petrol Company sells synergy 8000 premium please?
The consensus is that THIS is THE best petrol for the Honda Euro, correct?

[aaronng]

Mobil sells Synergy 8000. I wouldn't say it is the best, because fuels like Optimax can be inconsistent sometimes and even turn out better for that particular fill up. But try each one (BP, Shell, Mobil) and see which you like best.

[yfin]

Hiya Guys,
Dumb question, Can anyone tell me which Petrol Company sells synergy 8000 premium please?
The consensus is that THIS is THE best petrol for the Honda Euro, correct?
There is definately no consensus synergy 8000 is best. I find BP Ultimate to work best in my Euro.

[chris2k]

Ultimate tends to be better than the rest of the petrol out there now. Before it use to be Optimax, but that too have changed a bit and i find that it's not as good as it was before.

[sodaz]

All cars run better in cooler weather. You'll notice even a greater difference if your car has a turbo system. My Euro goes faster early in the morning and slows down a bit as the day goes by.

[viperx]

Its due to greater oxygen concentration in cold air.

[revNhevN]

It could be the fly-by-wire throttle. I remeber reading that it takes things like the incline of the road into account. What other variables does it take in an to calculate throttle position?

[EuroAccord13]

It could be the fly-by-wire throttle. I remeber reading that it takes things like the incline of the road into account. What other variables does it take in an to calculate throttle position?
Yeah, if the car is stationary, it revs faster, but if the car is in motion even if it's 1 or 2km/h, the intake changes and revs lesser and less energectically... those with aftermarker filter will be able to tell the difference from the induction noise.....

[yfin]

Resurrecting this thread... as I have noticed another odd thing about the Euro.

Most of my driving is city based. When I do get to stretch the Euro out (say 400kms of highway in one day) - I always seem to find the next day the engine is really keen and revs amazingly well and fast.

Has anyone else noticed this? eg after a long drive - more power? Weird.

[aaronng]

I find that if you have the A/C on, K24's response is really sluggish. I found between yesterday (35 degrees) and today (25 degrees) that a higher ambient temperature does take away response, but not as bad as A/C. So if I drive in 35 degrees without A/C, it'll be more responsive and probably more powerful than at 25 degrees with A/C on.

[Ferrarista]

Its your gearbox.

It remembers your last 40 changes meaning that if you drive it hard it thinks you want to drive it hard from now on. If you started driving slow towards the end of the day the gearbox thinks its slow again.

[aaronng]

But our gearboxes are manual. So the only thing that the ECU can change is the throttle position through the electronic throttle.

[Eurotony]

I think you will find thta the electronics of the car are remembering how you were driving the car previously. I will take time to reset the throttle response & auto transmission change pattern to your "new" driving style. There are many other parramaters that the car samples to adjust the car. It will even adjust the brake pedal response according to your driving style.

[aaronng]

I think you will find thta the electronics of the car are remembering how you were driving the car previously. I will take time to reset the throttle response & auto transmission change pattern to your "new" driving style. There are many other parramaters that the car samples to adjust the car. It will even adjust the brake pedal response according to your driving style.
Throttle response, yes. But the brake pedal response is not influenced by the driving style. The brake assist from the ECU is an off-on switch. It cannot apply brake pressures in between. And, yfin drives a 6MT, not auto.

[yfin]

I think you will find thta the electronics of the car are remembering how you were driving the car previously. I will take time to reset the throttle response & auto transmission change pattern to your "new" driving style. There are many other parramaters that the car samples to adjust the car. It will even adjust the brake pedal response according to your driving style.

The thing is a long drive in 6th gear (eg 5 hours in one day) sitting at a constant 2500-3000rpm is not driving hard.

I agree this must be something to do with the ECU but has anyone noticed this? I love how eager the car feels the day after long trips - wish I could have that all that time.

[EuroDude]

Its not just the temperature that caused perf degrading right? Sometimes on a warm day my car runs quite well, which leeds me to believe it also depends on the humidity, and off course Oxygen vs Nitrogen vs CarbDiox ratio's.

It also runs better on a full tank of fuel, but wouldnt that slow the car down - being 50kg heavier?

Plus if I thrash the car, it doesnt perform that well. But if I take it easy @3000rpm changes, it runs much smoother and feels more powerful (probably because the engine is cooler), or the ECU thinks Im a granny :P

[Omotesando]

I find that sometimes when I try to rev the Euro, for example to overtake someone, it might or might not give me the acceleration that I anticipated.

So if I see a gap I sometimes cannot make it, but sometimes I can.

I've since found out that in the Euro - it simply lacks torque everywhere - so that if the road is only a smidgen uphill it just doesn't like to rev, whereas if the road was even very slightly downhill it would rev uplike crazy.

That is the result of trying to spread out the torque delivery and making it a very linear power delivery despite its design for more torque over the K20A.

Especially compared to say a Magna or Falcon which have much more torque everywhere except at the top end. Meaning in gear acceleration wise all are equally as fast, sometimes even faster, but a lot of times slower if caught in wrong gear. Seems to depend on the incline too.. :o