Lumpy R33- Help!

[DK_R33GTST]

Hey guys,

I haven't driven my R33 gtst for about a month and it's just been sitting in my garage,

The perol was dangerously low so I topped it upwith $20 which got about 1/4 of a tank.

I went for a drive today (just before) and it's running REALLY rough!

It is really lumpy and when I accelerate there is hardly any power and it feels like it is gonig to cut out.

(I thought at first it was the car about to die due to no petrol but still have the problem after I filled up)

When it's idling it has the same issue, for eg) the REVS go up and down between 800-500rpm.

Just wondering what I should check for as I'm lost as to what it could be

Thanks in advance

[Dal34]

Could be a number of issues such as coil packs or spark plugs, replace those and then go from there.

[allthewaytotheskyline]

get outta this thread dallas...get back to work lol

[WOO32]

Couple of questions for u.

Is the oil milky??

does ur coolent look like it has a slight oil patten going though it??

if u take off the centre cover were ur coil packs sit, and look at them while the engine is running at night time can u see sparks jump or it look like a pretty christmas tree??

the petrol u got wasnt from a "no Name" petrol station was it??

i only ask these questions because i had a very simular issue with mine about a year ago. i hadnt driven it for about 2 month started her up and felt like a truck that was 50years old..but i kept on driving it for a few weeks then my head gaskit went. once that was fixed she was fine..

[eeiko321]

  DK_R33GTST said:

Hey guys,

I haven't driven my R33 gtst for about a month and it's just been sitting in my garage,

The perol was dangerously low so I topped it upwith $20 which got about 1/4 of a tank.

I went for a drive today (just before) and it's running REALLY rough!

It is really lumpy and when I accelerate there is hardly any power and it feels like it is gonig to cut out.

(I thought at first it was the car about to die due to no petrol but still have the problem after I filled up)

When it's idling it has the same issue, for eg) the REVS go up and down between 800-500rpm.

Just wondering what I should check for as I'm lost as to what it could be

Thanks in advance

yeah could be a number of things

but i would personally check the most obvious things like spark plugs...make sure they arent rusty... then check the coil by seeing if there is spark at all leads..

check if fuel filter is blocked, sometimes the symptoms of blockages cause irregular idling and drives like shit.

by the way does it rev past a certain limit??? does it cut out?

if it doesnt then it may be in limp mode.....

try reseting the ECU

Edited May 6, 2009 by eeiko321

[ELMOHASA33]

hey buddy as everyone said it could be a number of things the first thing to do is figger out what type of a miss it is it can only be fuel ignition or mechanical and may be isolated to one cylinder or spead over all.....

firstly if you can compession test each cylinder if all good its not mechanical eg: head gasket or burnt valve

next see if the miss is isolated to any cylinders by briefly disconecting the injector plugs one at a time if you disconect a injector plug and the idle dosn't drop thats your dead cylinder if the miss is located to one or two cylinders its more likly to be a ignition miss plugs coils ignitor ect

if the miss is spread accross all cylinders then its more likly to be a fuel problem so start by checking pressure flow and fuel condision if all this meets specs then it may be a sensor usualy the air flow or coolant temp have this effect

sounds to me like a fuel poblem like water in fuel take your fuel filter off keeping your finger over the bottom fitting so it stays full of fuel then empty it into a clear glass and blow throw the filter in the reverse direction of fuel flow into the glass if theres any water rust or dirt its no good

i hope this helps its only a rough gide but once you figger what type of a miss it is you will have a much easyer time finding the cause CHEERS

[3LGODZILA]

  eeiko321 said:

yeah could be a number of things

but i would personally check the most obvious things like spark plugs...make sure they arent rusty... then check the coil by seeing if there is spark at all leads.. coilpacks

check if fuel filter is blocked, sometimes the symptoms of blockages cause irregular idling and drives like shit.

by the way does it rev past a certain limit??? does it cut out?

if it doesnt then it may be in limp mode.....

try reseting the ECU

[eeiko321]

  jimmys-33T said:

yeah and what if the ignition leads have a fault?!

and he doesnt have a Multi meter?!