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pimp2plz,

? What spark plugs do you use.

I have another post; Re: Hard to start which you have replied to AlpineRaven.

I have been advised that EJ25 engines don't start well on Premium Fuels and I am interested on how many people agree.

? Can you confirm that you don't have this issue with EJ25 engines.

? 1. Does your EJ25 run better on premium fuels, better economy, more power etc.

? 2. Are the cold starts worse on premium fuel.

I have been told about an issue with premium fuels before, but I have found that I get better economy on premium fuels.

I believed that Premium fuels run cleaner through your system.

However I will do the test and report back!

I will do some research on this and may create a thread.

Update:

Have changed the IAC valve with a clean one, also used upper engine cleaner, checked compresion (all above 195), also check fuel pressure.

I do here the lifters, could it be valve adjustment?

What should they be set at? SOHC 2.5L

I have had the codes read and there where no faults.

Went for a 500km trip over the weekend and I noticed it started better after that, perhaps it needs upper engine cleaner?

? I believe there is a valve adjustment for these ?

I have the service history and ts always been up to date.

It appears to run reasonably smooth at idle but there is presence of a slight imbalance or miss. I think it could start better when its hot as well. It has done 130,000, engine oil stays nice and clean. I done the fuel prime test again and it still started rough, and that was in the afternoon and it...

I done the jump start test, It turned over faster, but still appeared to turnover the same amount of times before firing. I also done the fuel prime test, and it must have a fuel pressure switch because it wont run the pump more than one time. I here a faint whistle and a click from the pump relay. ...

Thanks so much for your prompt input!

I will do the jump start test, and reply.

I have only had the car 4 months. The timing belt and full service was done before I purchased it. ? Can it be set up wrong without having major symptoms ? I still get 10km per litre, normal driving with aircon on. It is only the standard size small battery, does hold good voltage 13.75, alternator ...

Symptoms are worse when it has not been started for a while, such as the first start for the day. It winds over for a bit without firing and then appears start on one cylinder and builds up to a smooth high idle. The exhaust emissions are clean. I suspect that the fuel rail is bleeding dry due to le...