Engine roughness in the morning...

[Ixat]

Hi guys, I feeling severe engine roughness for about 8 mins after start up and drive in the morning. The blue engine cold light goes off 2min after start up. But the engine is still really rough.

 

After 8mins of driving (start up, exit MSCP and hitting the e-way), the engine becomes really smooth. At traffic light stops, you almost can't feel the engine. Just like when new.

 

So my concern is the first 8min on startup roughness.

 

Its a Getz 1.6L and its 1K away from 100K servicing.

 

What should I get the mech to check and change out that would alleviate this morning roughness?

 

Is the engine mount kaput already? I'm on coilovers so the ride is quite harsh. But if the engine mount is kaput , why is it silky smooth 8min into a drive?

 

There is no drop in FC or engine performance. In fact it feels more grunt with all the roughness and pulls better.

 

Thanks for any advise.

 

 

[Koren]

what's rough? the engine(powerless/jerky)? or the car(vibrating badly)?

 

 

[Stickman]

my engine also abit rough in the morning. like louder and when moving off abit jerky.

 

but i dun think about it much. it goes away after a while of driving and the rest of the day its smooth.

 

i think its just the engine lubing itself up again after a night of stand still in the cold.

[Ixat]

what's rough? the engine(powerless/jerky)? or the car(vibrating badly)?

 

Bro, engine feels rough and also jerky. Than when moving off, due to jerkyness , car vibrates.

 

Weirdly the power is there, in fact I feel its more powerful esp during the rough period. Like alot of grunt.

Edited May 9, 2009 by Ixat

[Ixat]

my engine also abit rough in the morning. like louder and when moving off abit jerky.

 

but i dun think about it much. it goes away after a while of driving and the rest of the day its smooth.

 

i think its just the engine lubing itself up again after a night of stand still in the cold.

 

Yeah bro the roughness issue goes away after 8min and never resurface till next morning. Doesn't really bother me much just that my 100K servicing is coming up so I thought if there's anything major to change out which might alleviate this issue.

 

I have been using same w30 oil for last 4 change. Thinking of going w40 for this one. See if it helps

[Kb27]

I just read somewhere that a bad oil filter can cause rattling on cold start.

So maybe you want to go early for the oil and filter change to see if it helps.

[Sir8]

Weak battery?

[Ixat]

I just read somewhere that a bad oil filter can cause rattling on cold start.

So maybe you want to go early for the oil and filter change to see if it helps.

 

Cool. Hopefully servicing will help. Actuallly only last 3000km noticed this issue.

[Ixat]

Weak battery?

 

Batt is new. Start up is crisp and quick. I suffered with a half-weak batt for last 6 mths, too ngeow to change.

[Octopus]

Could be your oxygen sensor need replacement.

 

I read from the internet that some O2 sensor are heated type, so it can operate very quickly after car started. Perhaps your O2 sensor failing, so can only operate after the exhaust gas warm it up.

[Ixat]

Could be your oxygen sensor need replacement.

 

I read from the internet that some O2 sensor are heated type, so it can operate very quickly after car started. Perhaps your O2 sensor failing, so can only operate after the exhaust gas warm it up.

 

thanks for ur note bro. WIll ask the mech to check on that.

[Yeobh]

For me I will not want to be bothered - it's perfectly normal as car age more and more sludge and dirts will built up in the lub system. This affect the lub oil built pressure time and flow rate especially to the cylinder head top ( rocket arm area ) With insuffcient oil the tendency for more metal to metal contacts and therefore result in more vibrations and noises. Once the oil get into these areas in full volume at sufficient pressure and at operating temp logically all the vibrations and noises will go away.

[Ixat]

For me I will not want to be bothered - it's perfectly normal as car age more and more sludge and dirts will built up in the lub system. This affect the lub oil built pressure time and flow rate especially to the cylinder head top ( rocket arm area ) With insuffcient oil the tendency for more metal to metal contacts and therefore result in more vibrations and noises. Once the oil get into these areas in full volume at sufficient pressure and at operating temp logically all the vibrations and noises will go away.

 

Hi Yeo, thanks for advising.

 

While I need more time to come to terms that my car has aged Is there anything that can be done to alleviate this issue? Intend to drive the car another 2 years more and quite hard to live with the vibration every morning.

 

Also now lub oil flow is constricted, a thicker EO will extend the vibration period?

 

I'm at 100K now, every 10K mileage eats around 250ML of EO (EO capacity is 3L) so I thought of going from w30 to w40 to reduce the EO eating issue. If this will worsen the vibration issue, I rather live with the EO eating issue.

Edited May 11, 2009 by Ixat

[Kb27]

Try the Mobil 1 high mileage oil. It contains seal conditioner and could help with your loss of EO.

Maybe try some fuel system cleaners like Redline or Amsoil.

 

It may or may not help, but they are cheaper options to try first.

[Yeobh]

Yr current oil grade maybe just to thin for yr aging engine - it drain off too fast from the cylinder walls, rotating/moinv parts & cylinder head once you cut off the engine. Try to increase the oil thickness, it may help but not completely remove the problems.

[Ixat]

Try the Mobil 1 high mileage oil. It contains seal conditioner and could help with your loss of EO.

Maybe try some fuel system cleaners like Redline or Amsoil.

 

It may or may not help, but they are cheaper options to try first.

 

Just got a bottle of Redline SI-1. Used it 20,000KM ago on a smooth engine. Felt it got smoother. Maybe placebo.

 

Will try again.

[Ixat]

Yr current oil grade maybe just to thin for yr aging engine - it drain off too fast from the cylinder walls, rotating/moinv parts & cylinder head once you cut off the engine. Try to increase the oil thickness, it may help but not completely remove the problems.

 

So with the constricted flow, a thicker viscosity may not futher impede flow but help eh? Got w40 to try for this upcoming servicing. Will monitor.

 

Thanks!

[Route88]

Hi guys, I feeling severe engine roughness for about 8 mins after start up and drive in the morning. The blue engine cold light goes off 2min after start up. But the engine is still really rough.

 

After 8mins of driving (start up, exit MSCP and hitting the e-way), the engine becomes really smooth. At traffic light stops, you almost can't feel the engine. Just like when new.

 

So my concern is the first 8min on startup roughness.

 

Its a Getz 1.6L and its 1K away from 100K servicing.

 

What should I get the mech to check and change out that would alleviate this morning roughness?

 

Is the engine mount kaput already? I'm on coilovers so the ride is quite harsh. But if the engine mount is kaput , why is it silky smooth 8min into a drive?

 

There is no drop in FC or engine performance. In fact it feels more grunt with all the roughness and pulls better.

 

Thanks for any advise.

 

 

 

 

Try checking the fuel system delivery.