Vac Advance - Test / Is Va Needed Or Not?

[ATK 137 1 Cars]

Potching about today, and noticed the pipe leading from the vac advance (under the dizzy) wasn't connected - should it be connected to the throttle body?

 

Is the test to blow through it to see if there is any resistance - if so, does the engine need to be on?!

 

If it's busted do I actually need to replace it - what will it affect (not too bothered about fuel economy)

 

Cheers

Alex

[welshpug 1,622]

You disconnect it to set the initial timing, but it should be connected.

 

Suck/blow through it, it it passes air its dead, I would rather it be running properly myself, just think what all that rich running is doing to your engine oil.

[ATK 137 1 Cars]

Blow through it when the engine is on, right?

 

Where does it attach to the throttle body?

[welshpug 1,622]

doesn't matter if engine is running or not, can't imagine why the hell you would fire the engine up to test the vacuum advance capsule*

 

(*its that thing on the underside of the dizzy, just a diaphragm with an arm that moves the mechanism inside the dizzy)

 

the hose goes to a brass takeoff on the engine side of the throttle body underneath, next to the coolant pipes.

[ATK 137 1 Cars]

Blown through it and there's no resistance. So looks like its shot.

[welshpug 1,622]

pipe connected to the vacuum advance capsule not the engine right?....

[ATK 137 1 Cars]

This pipe...

[ATK 137 1 Cars]

Replacement is a Bosch Part No. 1 237 123 027, right? If so any idea where in South Wales/online I can pick one up?

Edited March 4, 2014 by ATK

[Daviewonder 533 3 Cars]

Have you checked to make sure the pipe isn't split?

[ATK 137 1 Cars]

Not yet, will check tomorow when it's light....

 

Think part no for Bosch is 1 237 123 091 rather than 027 mind.

[Anthony 1,000]

H&H ignition can refurb them quite a lot cheaper than they can be bought new

 

Well worth having - not only does it help part-throttle response, but it also makes a noticeable improvement in fuel economy.

[nveeate 78]

Anthony - when I was trying to source one recently, everyone wanted nearly £80 (£59.50+VAT + postage). Someone I know owns a motor factors and I can get them for a reasonable amount less....approx £50 incl VAT and postage. Do you reckon it's worth me trying to set up a group buy, or do you think most people would just either not bother getting it done or go with a cheaper refurb (which I think was nearer £25, though presumably two way postage on top)?

[farmer 327 1 Cars]

I got two genuine Pug ones for £25 quid not to long ago if you hunt about.

[nveeate 78]

I got two genuine Pug ones for £25 quid not to long ago if you hunt about.

 

Ha ok, not such a great group deal to be gained perhaps! I tried approx 5 online companies that were Bosch suppliers, and several local factors (independent and larger ones like Unipart)....most said they couldn't get it, and the 3 that could all quoted the same.....£59.50+VAT. My contact got it from Bosch Germany.

[farmer 327 1 Cars]

A good idea in general, but with H&H offering refurbs not really required at the moment.