Help With My R33 Gtst

[fletch63]

Hi all,

I am asking help again for my beloved skyline.

Only 2nd time in 4 years so not so bad

I try to do all my own work as most of you know its the only way to go as these cars are pretty

finnicky as they are complicated and GOOD

Anyway, it started idling rough when cold (always does this now)

Then it started on the road when at running temp

It basically can do it anytime (approx 50% of time now)

It can run absolutely perfect, then will start to splutter (idle or when driving) and then just comes good

At idle giving it a good rev seems to clearit for a while

When driving you just have to wait for it to come good.

I have noticed at idle when it happens, the tacho goes down and the boost guage goes UP.

Normally when you INCREASE the revs a bit the the boost goes up

Does this suggest a boost leak ? ...intermittant tho ?

I have changed the plugs and the fuel filter...no change (plugs are .8 gap ...same as before)

My car is an R33 GTST S2 (11 lb manual boost, FMIC, pod cold air, 3"cat back)

Any ideas anyone

[conan7772]

Hi all,

I am asking help again for my beloved skyline.

Only 2nd time in 4 years so not so bad

I try to do all my own work as most of you know its the only way to go as these cars are pretty

finnicky as they are complicated and GOOD

Anyway, it started idling rough when cold (always does this now)

Then it started on the road when at running temp

It basically can do it anytime (approx 50% of time now)

It can run absolutely perfect, then will start to splutter (idle or when driving) and then just comes good

At idle giving it a good rev seems to clearit for a while

When driving you just have to wait for it to come good.

I have noticed at idle when it happens, the tacho goes down and the boost guage goes UP.

Normally when you INCREASE the revs a bit the the boost goes up

Does this suggest a boost leak ? ...intermittant tho ?

I have changed the plugs and the fuel filter...no change (plugs are .8 gap ...same as before)

My car is an R33 GTST S2 (11 lb manual boost, FMIC, pod cold air, 3"cat back)

Any ideas anyone

How long has it been happening ?

dirty fuel or injector ?

[tridentt150v]

isn't that the afm dry solder problem.........thought I read it somewhere. There's a DIY on here on how to fix it too I think. Cos I could be wrong.

[fletch63]

How long has it been happening ?

dirty fuel or injector ?

yeah feels like it

I have changed fuel filter and my fuel economy is much better

But hasn't fixed problem

I have put a few bottles of injector cleaner thru but still could be injectors

Its been happening a few weeks now

But I don't wnat to go to the hassle and expense of injector clean if its not going to fix it

Any suggestions please would be appreciated as I am short of readies at the mo

[fletch63]

isn't that the afm dry solder problem.........thought I read it somewhere. There's a DIY on here on how to fix it too I think. Cos I could be wrong.

I will try it on the weekend

Cheers I didn't think of that

Have read it before as well!

[fletch63]

isn't that the afm dry solder problem.........thought I read it somewhere. There's a DIY on here on how to fix it too I think. Cos I could be wrong.

Thanks mate fixed all my problems

By the way all joints looked Ok but obviously weren't