Engine won't start

[OleH]

Hi,

After I did the "quad-vacuum" modification to the BOV, the engine won't start :?

I'm wondering if anyone have had any problems after doing this modification?

 

[Fusion Ed]

Most likely knocked a plug/sensor. Do a fault code test.

 

[OleH]

I have a LINK ecu, so I'm not sure that's possible.

What sensors may it be?

 

[Fire & skill]

What is the quad vacuum mod?

 

[watoga]

What is the quad vacuum mod?

I think he means taking these components:

....... and making one of these:

....... before connecting it to the throttle-body area like this:

I never had any issues with mine once the mod was completed. Could it be a knocked sensor as Ed said?

Good luck,
Dave

 

[Gaz gtiR]

What difference dous the above mod make? compared to having the DV connected the normal way?

 

[Fusion Ed]

Nothing imho, standard vacuum points are fine if pipework is correct.,
Are you using the link ECU with map sensor and no maf? If so I'd check the vacuum signal to that sensor.

 

[OleH]

Nothing imho, standard vacuum points are fine if pipework is correct.,
Are you using the link ECU with map sensor and no maf? If so I'd check the vacuum signal to that sensor.

Yes that is the setup I have.

Thanks for the tip, I will have a look at it tomorrow.

 

[PobodY]

Nothing imho, standard vacuum points are fine if pipework is correct.,
Are you using the link ECU with map sensor and no maf? If so I'd check the vacuum signal to that sensor.

Didn't "Mighty Mods" just say that they thought it sounded better?

 

[beany44]

I did this on my last pulsar following the mighty mods vid on youtube and had no problems.

I thought it made the DV louder lol maybe just me?

 

[OleH]

I just wanted to try and see what happened, really...

 

[Fusion Ed]

Thing is Mighty Mods did this without understanding how the system worked, the standard vacuum setup is fine - If its plumbed right. If it wasnt then it would be no good for the stock FPR etc.

 

[PobodY]

I think they were working on the premise that it balances the throttle bodies, but I'd rather not mess with that plumbing.

 

[watoga]

When I did the mod, it made absolutely no difference to the volume and/or noise of the dump valve. I had an ancient HKS (non-sequential) BOV and I was hoping it might have made it a little more audible, but no. The only benefit was I managed to replace some old crappy hoses with bright, shiny new red ones. Haven't had any issues since.

Cheers,
Dave

 

[Jon Olds]

None runner? Check for spark. Dizzy plug off?

 

[OleH]

So you lot reacon that it makes no difference what so ever?
I haven't tested it out yet, so we'll see if I go back to the old setup or not.

 

[OleH]

None runner? Check for spark. Dizzy plug off?

I first thought it didn't get any fuel, but I took off the piping from the plenum and I smelled fuel. Also, I have full fuel pressure.

So I will for sure check for spark

 

[danr]

fuel pipes back to front

 

[watoga]

fuel pipes back to front

Hopefully not, because to do this mod you don't need to go anywhere near the fuel lines. I'd be a bit worried if he'd removed the lines while tackling this job :-D

Cheers,
Dave

 

[watoga]

fuel pipes back to front

Oh right, I see what you mean now. He took the piping off to check, and perhaps put them back on the wrong way.............. Silly me :doh:

Dave