Little R34 Problems

[GreddyGo]

Hey People,

After finally returning back to Australia and being able to drive me car a fair bit, I have noticed a few little problems that I though might be solved through the forum.

1. Car is very hard when starting shortly after a long drive (so when hot)

2. Has a little constant misfire during idle and you can feel the power holding back in the higher revs.

I have serviced the vehicle and changed the plugs to a set of NGK coppers as well as a new Fuel Filter.

When changing the plugs they were quite black and the rear (6) looked quite burnt, also the valley cover looked quite burnt in the No. 6 spot. (excessive heat)?

The car has done 60,000 and only has a full 3" exhaust and Apexi Pod filter.

I had the car dyno'd a while ago and the A/F's were within range, the tuner said that the car was running properly, just suggested I get an aftermarket ECU. (probably for the rich & retard).

Hope the above info. will help people!

Cheers

Josh

[666DAN]

Coil packs decided to commit suicide in your absence?

maybe get some splitfires

[Abo Bob]

Get a leak down test done and get back to us. Doesn't sound too good.

[markimak]

doesnt sound good at all.

maybe blocked injectors.?

the R34 here is spitting cause of coils, did the silicon and fixed it. but comes back during 30+degree days..

try the silicon before u buy $580 splitfires..

[sky20det]

markimak ur on the money.. it sounds more like leaking injectors to me. leaking injectors when hot will flood the throttle body with petrol if left for a period after a drive.. GreddyGo, im assuming it starts perfectly when the car is completely cold in the morning? if so, u have at least one leaking injector. the reason it will start good when cold is the petrol that has flooded the throttle body will, overnight evaporate thus letting the car start easily.

if this is your problem, take out all the injectors and have them pressure tested and hopefully which ever one is leaking can be cleaned. sometimes crap will deopsit on the end of the injector therefore not letting it close properly and thus causes the leaking.

[GreddyGo]

Cheers Guys,

I have noticed that when I try to crank it sounds like the battery is very low, So i'm going to buy a new one tomorrow.

I didn't think you could pressure test side feed injectors?

I have thought about the Splitfires, but I might try the temp fix to see if I get some sort of change.

Cheers

Josh

[666DAN]

injectors are top-feed in R34's

[GreddyGo]

^^ Cheers for that, always get them mixed up.

I changed the battery and did the ECU reset and the hard starting when hot has seemed to disappear.

But still have that little miss during idle, will have a look at coils this weekend.

Cheers

Josh