Technical Brava 100SX Problem starting

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Technical Brava 100SX Problem starting

Cool Jug, thanks :)
I took 3 pics, choose the one you find convenient or even choose all 3!!!
As much details as you can provide will be greatly appreciated, as always ;)
Thanks alot.

 
I've attached the pic.

If you remove the throttle body you'll see the butterfly valve inside. thats the big thing with 2 'wings' that open and close when you pull on the accelerator cable.

The ISCV allows some air to bypass the butterfly valve when it is closed (at idle) so the engine can still get some air. how much air it lets through will affect how high or low the idle rpm is.

The easiest way to clean the ISCV is to remove the throttle body, then look for the hole that is just in front of the butterfly valve (airfilter side of valve). That hole is where the air enters the ISCV. Get a syringe with petrol and squirt it into that hole. Dirty petrol should then come out the hole behind the butterfly valve (engine side of valve).

Once the petrol is squirting through easily and cleanly you have successfully cleaned the ISCV.

Sometimes the ISCV will be closed or partially closed when you reomve the throttle body, when this happens you will find it very difficult to squirt the petrol through.

If that happens you need to remove the ISCV from the throttle body and clean it seperately. Thats not hard, but its more hassle than using a syringe to squirt petrol through.

the super quick and easy back street garage style fix it to use a can of wd40 with the little red straw stuck on to improve accuracy. with the engine running and the air intake pipe removed from the right hand side of the throttle body, you squirt wd40 into the hole for the ISCV. this is easy but i prefer not to do it because all the crap you dislodge from inside the iscv will enter the inlet manifold, and then the engine, and although it wont be enough to block valves or anything like that, as a rule of thumb i try to prevent dirt getting into the engine.
 

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Jug, :worship: thankyou for the idetailed info. I really appreciate your spending valuable time to describe this process.

I'm really sorry but which one is the throttle body and how do I remove it?
Thanks for your patience again and always. I'm sure that this tutorial will be very useful for a huge number of members and especially newbies in the forum (myself included):eek:
 
the throttle body is the bit that the ISCV is attached to. its the bit inbetween the inlet manifold and the air intake pipe.

if you remove the air intake pipe from the right of the throttle body, you can then remove the throttle body from the inlet manifold.
 
Come to think of it, Jug, I think that my mechanic went with the "back street garage style fix" method. Cos I remember him removing the air intake pipe and squirting from a WD40-like can whilst revving the car very hard... I noticed that some dirt went out of the exhaust on the ground...
This didn't seem to fix the issue. Do you think I should remove the ISCV and clean it thouroughly with petrol?
What do you think?
 
if he was revving the car the ISCV would have been closed so cleaning it wouldn't have worked very well, unless he was assuming the ISCV was stuck so revving it to make it close while squirting wd40 may free it. the ISCV is only open at idle, and even then it isnt fully open so revving while you squirt wd40 is not a good way to clean it. the best way to clean it is to remove it fully, although the petrol syringe method has worked for me many times.
 
Ok then, I'll try doing that in the weekend.
I'll report back with more nagging then :)
Thanks mate ;)
 
One more question, how do I go about removing the ISCV from the throttle body? I mean do I twist it off llike a screw or do I pull it off?
Thanksagain.
 
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