Lil Bit Of Help Plz

[Krishy]

hey guys....i have a r33 series 1 skyline and experiencing some problems with power on my car...i had it dynoed and i was pulling 101rwkw on stock boost with a full Greddy/Trust exhaust system and a K&N pod filter......they couldnt find the problem from just a power run....and also when the car is idling it sounds like it wants to stall, revs are generally about 400-500rpm on idle.....is that bad?

also has anyone had this problem before if so how did you fix it? i have been told a few things from the mechanics but they are not that sure so if anyone can help it would be good thanks

[ssshonky]

for a boosted ( I presume its an rb25det ) motor thats not much horsepower!

I wonder if your catalytic converter is blocked?

easiest way of checking that is just to disconnect the rest of the exhaust from the turbo/dump pipe and see if it does heaps more power

[R34GTFOUR]

while a blocked cat will reduce hp its not going to make it idle at 400-500rpm. Does it sound like a wrx when driving? Have you had a compression test done? How many km's has the motor done? Any engine lights on? What does it drive like?

First thing i would give it a compression test and see what the numbers are, the mechanic should be able to do it in 10mins if he knows what he is doing.

I hope its just something simple like a spark plug dead, but it could be a broken piston...

[CleanaR33]

my daily driven 33 series 1 has cat back, pod filter, front mount and is running 14psi and idles at 900 every day... how much did your dyno tune cost? they should've done compression test and requested to change the plugs before they even pulled a power run??

[Krishy]

So far i have gone and seen a couple of mechanics in the past few days.....i have been told that i might have a vaccum leak somewhere, spark plugs, cat is blocked/stuffed, manifold and turbo gaskets are blown....

so since then i have changed the spark plugs....makes no difference...most of the them told me that its a vaccum leak plus the gaskets are gone....its making a ticking noice from near the manifold and turbo....apparently the turbo is making boost....the compression seems to be fine and all.....i am going to get my vacumm lines replaced and gaskets replaced and see if that makes any difference....i have booked it into a garage but it has a 2-3 mnths waiting list so i am not planning to drive it for a sometime lol.....

with the car idling so low could that be a timming related problem....umm the motor has 130,000kz on it and i have had it when the it had 85,000kz on it....since then i have replaced my timming belt and the usual plus it gets serviced on the due dates or once certain kz have reached on the clock.....

[smurf80]

If its ticking near the turbo and manifold id say it probably is your gaskets gone. If you havent replaced them previously it could possibly be the original ones.

[Krishy]

well thats what i am going to fix up first and hopefully thats the only problem.....another question my cat is gone....so high flow cat or a straight through pipe?

[smurf80]

highflow cat if you want to avoid fines from the boys in blue.

[SiR_RB]

get a compression test done first before you change anything else

[BAMR33]

Busted exhaust manifold gasket as smurf80 says is more than likely the problem.

If you're in the market for a hi-flow cat check out the group buy in my signature, you'll have a hard time finding a cheaper hi flow metal cat.

Edited May 28, 2007 by BAMR33

[Krishy]

Busted exhaust manifold gasket as smurf80 says is more than likely the problem.

If you're in the market for a hi-flow cat check out the group buy in my signature, you'll have a hard time finding a cheaper hi flow metal cat.

i will keep that in mind when i have the cash to buy a high flow cat....with straight through pipes does it chuck out flames and will it also flame with the high flow cat.....also the workshop where i am getting my gaskets fixed are going to do the pressure test before they do anything or before they even dyno it.....