Help...r33 (gts-t) Not Running Right

[cabbie_bro]

Hey Guys,

Just wanted opinions and ideas and to see if anyone has come across this issue.

I haven't driven my R33 in about a month or so (company car) and the missus drove it last week and said it was "jumpy" when she accelerated. So i took it for a burn this arvo after work and it idles like it's a boxer/rotary. It seems to idle fine for 2 secs then sounds like a misfire for 2 then back to normal. When it accelerates under load (driving) it feels like it is mis firing and every so often i get a nice bang out the exhaust when i change from 1st > 2nd or 2nd > 3rd.

I was thinking an intake issue, maybe air escaping from the FMIC Piping. The missus said before it wouldn't make boost when she drove it (or barely made it) but when i drove it it seemed it made boost maybe a lil below normal.

When i decelerate and run down the gears while breaking it revs fine it only has problems when accelerating.

Any Ideas??

[PM-R33]

Remember this one for the future as its with most cars.

If it sounds like a rex/rotary, it means one or more of the cylinders isn't firing (unless its a rex/rotary lol).

Easy way to check what cylinder it is, while the car is running, unplug coilpack number one and see if the note changes. If it does it aint that one. Plug it back in and continue to do all of them until you find one that doesn't change the exhaust note. That is the cylinder the car isn't firing on. Could be as simple as a loose plug connection on the coil pack or a faulty coil pack or plug.

Pretty easy really

[cabbie_bro]

Oh ok, i didn't cross my mind cause i changed the plugs (and yes correct gap) about 3 or so months before it sat for a while. I will def check em again, hopefully it is the issue and fingers crossed only a spark plug. was thinking electrical connectors tho cause it has been raining a bit here lately and very moist air (Darwin)

Anywho i will give it a go and post my findings.

[PM-R33]

No worries man, you'll find its most likely just a bad connection with the clip on the coil pack, happens all the time.

[PUDZ 32R]

if it is misfiring on accelleration i would say its a coil pack that has gone. as they only play up under boost usually. during back off the engine is ander vac so they dont play up. just check the all out./

[The Bogan]

Have you tried cleaning the electical connections, lots of corrosion can build up and make it run like its got a dead coil.