86 gl distributer q's

[backcountrycrui]

On my 86 gl wagon I have a disty that has two vac advance lines going to

 

it. As it sets now the vac advance closest to the dist. has a hose on it that

 

doesnt seem to have vacume at idle. The vac advance that is further away

 

from the disty has a hose that seems to have a lot of vacume all the time.

 

A couple of questions, why do I have two vac advance units instead of the

 

typical one unit distys I have seen? Is it normal to have one hose that

 

doenst seem to suck and one that does? Are they in the correct position?

 

And last, the ses light is on, says that it is the pulse system. Is this code

 

related to vacume leaks? I found one vacume port with nothing on it up

 

under the carb sucking the daylights out of the atmosphere.

 

Thanks guys

Mike

[naru]

On my 86 gl wagon I have a disty that has two vac advance lines going to

 

it. As it sets now the vac advance closest to the dist. has a hose on it that

 

doesnt seem to have vacume at idle. The vac advance that is further away

 

from the disty has a hose that seems to have a lot of vacume all the time.

 

A couple of questions, why do I have two vac advance units instead of the

 

typical one unit distys I have seen? Is it normal to have one hose that

 

doenst seem to suck and one that does? Are they in the correct position?

 

And last, the ses light is on, says that it is the pulse system. Is this code

 

related to vacume leaks? I found one vacume port with nothing on it up

 

under the carb sucking the daylights out of the atmosphere.

 

Thanks guys

Mike

 

You don`t have two vac. advances.One is a vac. retard port connected to the opposite side of the diaphragm.It provides improved emission control during closed throttle operation.

 

The retard side should see manifold vac.

The advance side should see ported vac. w/warm engine.

 

Sounds to me like the lines are reversed.

 

Pulse system code is unrelated.

[backcountrycrui]

Ok I will try to swap them then. Should I see any real change in anything, driving or timing wise?

Thanks

mIke

[naru]

When the hoses are in the correct position,ignition should be less advanced at idle.

 

Considering ported and manifold vacuum are the same once the throttle is opened a little, I wouldn`t expect major differences.Idle speed will almost certainly be lower w/hoses correctly connected.Possibly smoother.

 

Engine may warm up slightly quicker.

 

If you end up changing things, you should readjust the idle mixture and speed too.