Engine 'stuttering?'

[33Sedan]

Hey guys, drove around today with no problems, but on my way back home, sounded initially like i had a flat tire, then realized was the engine.

Car sounds like a wrx (which isn't normal lol), if i'm rolling along, the engine will stutter, especially when accelerating. When travelling along, the engine will slow down then burst forward for a sec, then back down etc.

Got a booking fr Trojan on Thursday, but its a 40-50 min drive from my place, and seemed to be getting worse on the 10 min drive to my place.

Any idea what it could be? Just wondering if I should drive it on Thursday, or get it looked at by someplace close perhaps tomorrow or tuesday first.

The only weird thing I can think that happened, was yesterday, my nan was watering the garden and somehow lost the hose, went under the car and drenched the engine bay from underneath. I noticed the pod filter was a bit wet but left it overnight/day to dry and like i said, it ran fine......

If you haven't guessed, i know next to nothing about this stuff...

[Bluprint]

If your pod filter's wet then it's very likely that you've gotten your airflow meter wet. Could be that. It could also be the electrical contact for the crank angle sensor has gotten wet, which isn't far from the air filter.

Could be your coilpacks starting to bomb out by coincidence, but that only really happens when you rev/boost it hard and flat footed (initially).

Does it matter if the engine's warm or not?

[33Sedan]

Thanks mate,

Nah dosn't matter if the engine is warm, drove home which was like 15-20 min drive, did it the whole way

Should mention that my engine is stock. just got the pod and zorst.

Edited August 23, 2009 by 33Sedan

[RB ONEVIA]

my silvia (RB20) sounded like a wrx when running on 5 cylinders on idle but as soon as you started driving itd run on 6 cyls. possibly coils. just get some splitfires and see what happens.

[33Sedan]

To me, with no real knowledge, or anything to back it up....It feels like some cylinders arn't firing all the time, and the engine spurts forward when the cylinder does fire??

[Viper_r32]

sounds like a faulty coil pack to me

[33Sedan]

Expensive?

[94 skyline]

could it be the spark plugs not firing right

[33Sedan]

could it be the spark plugs not firing right

I'm not sure, that was my initial thoughts. Hmmmm...... Might drive it to my local place, see whats wrong, if they gotta replace stuff i would prefer trojan to do it - except not really wanting to drive it all the way there lol.

[GTRKat]

If you don't want to drive it and don't trust the local place, just chuck it on a truck. I've done that and the $70 or so that it cost was worth it for the piece of mind.

[R34power]

Sounds like some thing not fireing could be spark plugs or coils.

Fun fun fun.

[Donnan]

I'm with Kat. get it towed or it may end up costing you a lot more than just a set of coilpacks. even they are only about 600 local (cheaper over the net)

[33Sedan]

Sounds like some thing not fireing could be spark plugs or coils.

Fun fun fun.

LOTS of fun!

[Sir Lord Van Von Vader'ham]

Bitch-slap it

[Sir Lord Van Von Vader'ham]

.......or depending if you can get it to do it at idle

easy way to test the coils is by unplugging them one at a time. whichever one doesn't make a difference.... will have some issue with it.

[putraged]

man i had the exactly same issues here. my RB25de Neo have some trouble with missfiring. because it sounds like a WRX. probably chilling winter in canberra?

if u start the car in the morning (or when the engine is cold) it sounds ok for 5 minutes (because the car automatically retard the firing). after 5 mins the timing gets advanced to normal state, thats when the engine sounds like WRX.

i'm opening my intake plenum now and will open the cover tomorrow to check and replace the spark plugs / coils / looms. or even injectors.

http://www.skylinesaustralia.com/forums/Ne...49#entry4774549

if u'll bring it to local workshop, will u share the answers with me?

cheers.

[Bluprint]

.......or depending if you can get it to do it at idle

easy way to test the coils is by unplugging them one at a time. whichever one doesn't make a difference.... will have some issue with it.

One thing he's forgotten to tell you though don't unplug them/plug them in while the car's running... right James?

[33Sedan]

OMG TOOK THE SPARK PLUGS OUT WHILE IT WAS RUNNING AND THE ENGINE WON"T START NOW>.......

just kidding ;-)

Thanks guys, getting it towed to trojan tomorrow. gtrkat, your price was spot on! Thanks!

Trojan thinks it could be the spark plugs or coil packs ;-)

Will see on wed/thurs. Hopefully won't break my bank account...fingers crossed!

[GTRKat]

Haha nice one. Small price to pay I am thinking, I've done it twice now.

Good luck on the bank account. Mine's been broken, 4 new tyres and a decent sized bill at Inline coming my way at the end of this week!

[r33skylinegtst]

Good luck mate, i had an issue with mine not long ago where it would just stop accelerating all together, then it'd kick back in and cut back out, all within the space of a few seconds. Took it to Ed at AutoTech and it turned out to be the solder on the wires in the AFM had come loose and were barely making contact causing the PowerFC to think there was no airflow coming in and cutting the power. To make matters worse had a grounding issue at the same time and one problem masked the other.