Extra Vacuum

[ufo8mycow]

How to i increase the Vacuum or add a Vacuum pump?

Under load i loose vacumm and does all weird shit to my climate control since i have had gas put on. Dont seem to have any leaks, or anything.

Vacuum ball seems to also be ok.

Any ideas.

VS Calais 97

[rusty91]

have u checked the big black ball that is under ur front bumper on the passenger side where ur vacuum is stored and normally if they break or the vacuum line corrodes on it then u will lose vaccum under laod and regain it bak on light accelaration and idle.. mine is the same

[hako]

At a guess I'd say the people who installed the gas have dislodged a vacuum hose and this is leaking vacuum. Try removing the engine cover and look for any dislodged or split hoses.
Also look around the charcoal canister.

[ufo8mycow]

At a guess I'd say the people who installed the gas have dislodged a vacuum hose and this is leaking vacuum. Try removing the engine cover and look for any dislodged or split hoses.
Also look around the charcoal canister.

Done all that. All them things look fine. It happens on both petrol and Gas as well.

[D3V14NT]

Sounds to me like a cracked or split vacuum hose. May only be a small crack or split and hard to see. Don't forget to check the vacuum hose to the heater tap

[hako]

Done all that. All them things look fine. It happens on both petrol and Gas as well.

I'd check it all again - the clue is that the problem only happened since the gas was put on, so it's 10 to 1 that it relates to something they have done. It may be as simple as replacing a one-way valve the wrong way.
I'd locate the vacuum take-off nipple on the inlet manifold and work back from there....check all joins by removing and inspecting - they can appear OK but be split.

[moff_man]

your little one way valve on the manifold will be foulty, replace it and make shure its the right way around.

i know with normal a/c system under load it goes to the screen and returnas back to face.

the engine is under vaccume whilst idling since the pistons are drawing air in to the cylenders and under throttle it goes positive hence no vaccume. adding a vaccume pump will not help it will just add extra un nessery crap ynder your bonit where a 30 cent part will fix it.

[ufo8mycow]

valve is working correctly and installed the correct way.

lol