rough start up

[crack]

I've had my R33 for two weeks now and have come across a problem. Over the last 4 or 5 days it has become harder to start. Each time more so than the last. When it does start, it idles smoothly with no other hiccups throughout the rev range. I am the first owner of the car in Oz and I am wondering if the plugs are still for jap fuel (100 octane) and possibly fouled. Could it also be the AAC control valve or the bi-metalic valve?

One other thing I noticed. The car will idle roughly (sounds like three cylinders) but as soon as I touch the accelerator it idles nice and smooth.

Any suggestions?

[sweetr33]

hard to know exactly what u mean, when mines cold and i start it i notice its hesitates afew times to bring the revs on cold start idle to about 1200ish rpm if i give the throttle a touch to help it there then its fine, to me its not an issue coz i have checked everything, and its only for 1 second on cold start up then there is no drama. Just check the spark plugs if ur in doubt!!! Its not hard to do champ!! Good luck

[Frosty]

i agree with SWEETr33 on this one

i have the 32 GTST and it hesitates a little when cold in the morning but other than those like 10secs its fine and then idles perfect.........i have noticed however my car has been of the road for 5 1/2 months now and i started it the other day and was a little worse mainly i think because of the lack of use

im pretty sure just get a set of new sparks and you should be OK

good luck

[sweetr33]

frosty it could be plugs or more than likely just the fuel has gone a little stale from sitting in the lines for those 5 months. Should be an issue when u start it up again. I remember when i went to test drive a r33 that just got off the transport truck, hadnt been started for like 8 months and its ran on 5 cyl's for about the for minute till the stale fuel cleared and it got decent fuel into it

[Frosty]

its all good finally got it back on the road now

fully kitted with VeilSide C1 and nice rims so ill post some pics too

thanks for the info too SWEETR33

[red17]

Umm, has the battery got some distilled water in it? Harder starts are usually the sign of a battery thats struggling to cope. Especially if its come on all of a sudden.

My 32 is hard to start from cold, but its been like that ever since i got it, still no idea what causes it.

Red17

[Sumo]

when my 33 starts, it wait @ 800rpm till it builds up oil pressure then revs up too 1500rpm. She starts like a new one every time

Sumo

[trbo32]

My 32 used to start first time everytime, but since i put Motul 3000v in the engine, it's a little harder to start now. It takes a fee seconds to build up to a smooth idle. It only does this when it's cold. Not sure if the oil is to blame though.

[JimX]

By "rough startup" do you mean it struggles to crank over or just cranks over for a long time? If the latter, it's a very common problem on many 'lines. The way I get around it is if it doesn't kick over within 2 seconds, I let go of the key, wait 1-2 more seconds, then crank it over again, and it will start within 2-3 kicks. If I keep cranking it over and it goes beyond 2 seconds, it will not start for another 4-5 seconds or so.

Recently I have adjusted the cranking ignition injector duty cycle times on my PowerFC which has pretty much fixed this problem. If you're stuck with a stock ECU then you can't fix it this way.

[Cubes]

Mine also does this.

During summer it tends to be less so. Some times it starts perfect most time it splutters a little. Always kicks over within 1-2secs though.

[crack]

By "rough startup" do you mean it struggles to crank over or just cranks over for a long time? If the latter, it's a very common problem on many 'lines. The way I get around it is if it doesn't kick over within 2 seconds, I let go of the key, wait 1-2 more seconds, then crank it over again, and it will start within 2-3 kicks. If I keep cranking it over and it goes beyond 2 seconds, it will not start for another 4-5 seconds or so.

The car starts after 1-2 seconds of cranking but feels and sounds like it is running on 3 cylinders. But as soon as I touch the accelerator pedal it revs up to about 1200 rpm then settles into a steady idle. Wierd.

[Frosty]

JIMX

what he is saying that it runs like s**t until he puts a bit of gas init.....like miss fires real bad

it seems to be a sort of trade along the lines and some of the silvias do it aswell :S

[trbo32]

For me it's like the car turns over (not literally ) and it idles like it's going to stall on me and then in a couple of seconds it the revs build up and it idles fine.