Now I come to think of it, there are three tubes coming out of my Evap cannister. One of them goes absolutely nowhere, just in to thin air... I thought that was normal as I cant remember where it went before.

My evap cannister is in my engine bay, whereas I think yours is under the car somewhere.

But yeah, I have one tube going to the intake, the other the fuel tank or thereabouts then I've got another just ending (to atmoshpere).

The Evap system was the only thing I didnt really understand, and still dont to be honest, so we probably have done something wrong with it.

So yes, I do have a tube to atmosphere at the moment on the Evap cannister, - so perhaps that is the leak? It is apparently supposed to go to the ventilation solenoid, but I've no idea where that is! Or even where that tube was connected before! D'oh!

 

HERE's a diagram of the hoses involved in the evap emissions control system. It shows where the three hoses go from the canister.

I also read that the purge solenoid needs to be closed when the engine's at idle, or it can let in a lot of air and make the idle surge like that. You can buy the tool to check for flow, or use an aquarium air flow gauge (for those bubble decorations) in line with the purge solenoid to see if flow stops at idle.

 

I'll fiddle with it knowing what I Know now and hopefully can sort it. I know the purge solenoid is connected to the ECM and power properly, the tube from that then goes to my Evap cannister - and from there there is a tube going nowhere, which must be letting lots of air in at idle.

Seems the obvious answer to this problem, so ill have a go at sorting it tomorrow.

 

I figure I need to order the following parts for the Evap cannister to sort that issue:

Evaporative Emission Ventilation Solenoid
ORVR Vent Module
Vent Pipe Assembly

Myszkewicz, do you have any idea where they are in the parts programme? I cant find them to get part numbers.

 

I remember when engines were "Simple"... heh. Good work Diavlo & Co.

 

Main 13, sub 20, third page. They're at the top, under different names.

 

Thanks, I've got those parts ordered. Until they arive Im going to clamp or block that tube that goes from cannister to intake manifold to prevent the vacuum leak that was obviously occuring.

 

I've tried blocking the tube from the cannister to the Intake Manifold, and cutting out the catch cans in the PCV system... but still its revs like mad when the clutch is in.

My fuel temp sensor is not working as I need a new one- could this be a cause? Or mis-fires?

Im running out of options here, the car is amazing to drive but I simply cant drive it when it revs so loudly and so quickly whenever I come to a stop.

 

It could also be my power brakes, because when I press the brake pedal I hear a whooshy sound like air being squeezed out of a tight gap.

 

Found the problem - I acidentaly replaced the brake booster tube with built in check valve, with a silicon hose. oops.

 

Wow, I didn't see that one coming. I guess it makes sense though since it only happened while braking. Anyway, I'm glad to hear it was an easy fix and you can enjoy the car now.

 

You know....since Carl helped you a lot with this, you could always blame him when something goes wrong! That's how we do it in the States! j/k
Glad it's all worked out now.

That 2.4 is nice, isn't it?

 

Actually - the problem is still there and just as bad as ever. Infact it seems that valve made no difference at all. We've tried it both ways around too.

Im about to give up on the car because of this because I cant drive it anywhere without people beeping and shouting at me for reving loudly whenever I come to a stop behind them.

I'll just have to wait until someone comes up with a solution. I also wonder if the phenolic spacers are causing this...

My possibles are:

Lack of fuel temp sensor
Lack of fuel pressure sensor
Lack of functioning Emission Evap System
Lack of fuel pressure releif valve
Phenolic Spacers

Although I've made sure the tubes are all connected and in the case of the evap tube to the intake its sealed.

I was sure I'd found the solution when I realised I'd missed that valve from the brake booster tube, but no...

 

I don't think the phenolic spacers would cause that, unless there was a leak at the spacer.

I'd suggest getting the sensors that aren't connected wired up and get the evap system working, and see where that leads you.

I'd also be curious to know what fuel pressure you're running with no regulator. In the US Ralliart, the regulator is part of the fuel pump assembly so the system is returnless. I'm betting your 1.6 had a regulator on the rail and a return line.

 

We got the RA fuel pump with regulator. Its a returnless system now.