hi there and oops think I have bought a lemon

rx7boy · December 06, 2011, 12:43:57 AM

If someone has tried to make it non-sequential then check the flap in the under the turbo pack manifold is being help open, some bodge it tuners use a piece of metal to hold it open which is normally too thin or corrodes away making the flap move about. this would stop exhaust gasses reaching your second turbo hence the power drop and spluter at 4k

Just get under the car and see if you can see the flap arm and check that is is secured or attached to a actuator

HTH

123tom123tom · December 06, 2011, 05:04:24 PM

Quote from: rx7boy;801427If someone has tried to make it non-sequential then check the flap in the under the turbo pack manifold is being help open, some bodge it tuners use a piece of metal to hold it open which is normally too thin or corrodes away making the flap move about. this would stop exhaust gasses reaching your second turbo hence the power drop and spluter at 4k

Just get under the car and see if you can see the flap arm and check that is is secured or attached to a actuator

HTH

this next clue I gained today might help with this theory. When I am driving there is a dumping sound all the time, like a blow off valve kind of noise, it does this noise even when decelerating with my foot just touching the accelerator??? It is really hard to explain on here what i mean? Like I have said checked the ic piping etc there is no leaks. It is like a constant rush of air noise which would say thare is a leak!! this flap thing sounds interesting because that what it sounds like!!!!

sorry about the naff explaination

Oooooh yes quick one whilst I am posting, what levels should the water be topped up to in the two tanks

shaunwil · December 06, 2011, 05:29:28 PM

The two caps are linked in the same system. If you stand at the front of the car the black plastic part is the AST (air separation tank) and the one on the waterpump is the main feed. If you look at the front bumper on the left there is a 3rd tank for the overflow with a plastic level stick.

If you look at the back of the engine there is a hose on the throttle body, unclip this and place higher up (its the highest point in the circuit). Fill up the AST till it fills up to the top and doesn\'t drop. Close that cap then fill the one on the waterpump. Once you get close to the end up a cutup bottle on the filling point and put a head of water above the cap. Go back to the pipe at the back and recouple, it should be pflowing coolant out as you plug back in. Fill the overflow to half way and then do a few runs. Top up from the waterpump cap after a cooldown to take up the air. If it takes a wee from the overflow tank you know the system is bled and you should need to put any more in.

Shaun

123tom123tom · December 06, 2011, 06:23:41 PM

Quote from: shaunwil;801499The two caps are linked in the same system. If you stand at the front of the car the black plastic part is the AST (air separation tank) and the one on the waterpump is the main feed. If you look at the front bumper on the left there is a 3rd tank for the overflow with a plastic level stick.

If you look at the back of the engine there is a hose on the throttle body, unclip this and place higher up (its the highest point in the circuit). Fill up the AST till it fills up to the top and doesn\'t drop. Close that cap then fill the one on the waterpump. Once you get close to the end up a cutup bottle on the filling point and put a head of water above the cap. Go back to the pipe at the back and recouple, it should be pflowing coolant out as you plug back in. Fill the overflow to half way and then do a few runs. Top up from the waterpump cap after a cooldown to take up the air. If it takes a wee from the overflow tank you know the system is bled and you should need to put any more in.

i havent got any black plastic bottles??? the two I am looking at are at the front of the engine bay, they are both silver metal bottles!!!, I am a proper amerture I didn\'t even know there was another for the over flow, oooh dear me :2Confused

shaunwil · December 06, 2011, 06:33:51 PM

Odd you have 2 metal bottles. I can understand one because a lot of people get rid of the plastic AST tank because they are known to split.

Is there one cast into the top of the water pump ?

Shaun

shaunwil · December 06, 2011, 06:34:24 PM

Unless one is an oil catch tank :Giggle

Shaun

123tom123tom · December 06, 2011, 07:10:49 PM

Quote from: shaunwil;801502Odd you have 2 metal bottles. I can understand one because a lot of people get rid of the plastic AST tank because they are known to split.

Is there one cast into the top of the water pump ?

Shaun

yes sorry one is on the waterpump, other is just to the right of it, same cap on it, but metal not plastic

:rollin

RobMatthews · December 06, 2011, 07:24:00 PM

dude befor going any further get some pics up so there is no confusion and we can help propperly!!

123tom123tom · December 06, 2011, 08:11:47 PM

Quote from: RobMatthews;801515dude befor going any further get some pics up so there is no confusion and we can help propperly!!

ok will do watch this space? going to get some pics tomorrow and will post them... anything in particular we need pics of?

-ecu
-certain parts of engine bay
-etc

regards tom

RobMatthews · December 06, 2011, 09:27:59 PM

A few of the engine bay

123tom123tom · December 07, 2011, 07:50:33 PM

dunt no if this is going to work?

123tom123tom · December 07, 2011, 07:51:08 PM

HaywardRotary · December 07, 2011, 10:30:41 PM

The ecu is a stock ecu that has been chipped to run more boost in Japan where they have much higher octane fuel than we can get here,often engine detonate when they get here due to our poor quality fuel. Maybe that has happened in your case.
A stock ecu should run around 10psi of boost not 1bar.
It seems likely that you have a major engine problem to me.
Regards
Carl

a.tapos · December 08, 2011, 09:07:47 AM

sounds like set of turbos at the very least to me,but thats not a job you want to do on your drive on a sunday afternoon,

123tom123tom · December 08, 2011, 09:08:20 AM

Quote from: HaywardRotary;801674The ecu is a stock ecu that has been chipped to run more boost in Japan where they have much higher octane fuel than we can get here,often engine detonate when they get here due to our poor quality fuel. Maybe that has happened in your case.
A stock ecu should run around 10psi of boost not 1bar.
It seems likely that you have a major engine problem to me.
Regards
Carl

if there was any major issues though would car not run??? it starts first time every time it seems to idle perfect and drive on the first turbo very well??, it is over fueling badly though? I am confused, I am getting the car pressure tested today, is there anything else i should look at having to done to check the health of the cars engine??