Engine Running Rough And Nothings Working Help

[s_y_c]

hello SAU.

i've just brought my first car, a skyline of course. I've had it for a year now with litte problems. although its only a stepping stone for my skyline I take alot of care maintaing it as best i can with my engineering and servicing experience.

its a r33 1997 gts25 import with 180000ks

recently after returning from overseas my car has had a painfully rough idle and warm start up issue only below 2000 rpm. the engine feels as if its missing or almost stalling randomly at any stops especially. i was attempting to replace the gaskets and polish the head lights and foggies before i started it the first time. so i cant tell if its something ive done or its happened while i was away. when it was being started and driven once every 2 weeks. i took out the coils and plugs, cleaned and inspected them while sealing all the valve cover everything seemed fine.

i've tried everything ive reasearched so far and nothing seems to work it has no fault codes. i cleaned the AAC and the MAF but found no change. the plugs and coils seem fine only one with a small crack in the ceramic and another coil with some oil on the outside of the boot but no noticeable firing issues. i do have a power steering leak and it moans when its cold. hence the AAC check.

Please help cheers!

[mad082]

how long were you overseas for? how long ago was it last filled with fuel?

if you were overseas for a while then it may just be stale fuel.

[s_y_c]

i was out for 4 months but i had realitives starting it and driving it small distances, i had driven through the last quater tank that was left in it and just refilled it but the problem is still happening. could it be a injector?

[mad082]

could be. i'd be looking at replacing the fuel filter to start with (cheap and easy to do). might be worth throwing a set of new plugs in as well (copper plugs aren't very expensive)

[s_y_c]

alright ill give it a shot and tell you how it goes, might have to borrow plugs from the neighbour. uni doesnt pay well haha thanks

[t_revz]

Bcpr6es plugs are about $4 each

[s_y_c]

okay so i changed the fuel filter, and the plugs still going. i poured in a whole bottle of injector cleaner in the tank and its still going for it when im at the lights. im starting to believe its the torque converter.

so i put a bottle of the auto trans fluid in and it seemed to make it worse if anything.i rememebered a while ago just before i left i dropped a shattered end of a screwdriver down the back of the the intake valve cover i was too frustrated with the screwdriver and finding another one i forgot to get it out. I was thinking maybe just maybe it has somehow slid down and is causing the torque converter clutch to slip between free and engaged please tell me im a complete idiot and its something much simpler and this is impossible.

[mad082]

It sounds like you need to take it to a mechanic. For starters, have them drain all the extra trans fluid you put in so it didn't damage the gearbox (you can't just put in a bottle of fluid if it doesn't need it).

Secondly, unless you had the gearbox off at the time, the screwdriver wouldn't get into the torque convertor.

Thirdly, you should only use injector cleaner at the recommended dosage, and it won't just magically fix any problems straight away. It will take most of the tank of fuel to do anything, but those injector cleaners don't do much. You are best off having the injectors professionally cleaned.

[s_y_c]

i meant the transfluid conditioner stufff which told me to put in a whole bottle. and same with the injector cleaner it reccomended half a bottle to a tank but strictly said overdosing will not affect it at all.

but im determined even without the screwdriver its still the torque converter im going to take it in soon. thanks