ZCar Forum banner
Status
Not open for further replies.
1 - 2 of 2 Posts

·
Registered
Joined
·
107,695 Posts
Discussion Starter · #1 ·
First, I appologize for my eailer post, which wasn't very clear. I tried to delete it, but it seems I forgot to specify a password.

Here is my situation, and I hope someone can help. On my distributor, there are two vacuum lines that go into it. According to the Haynes manual, one is a primary line, and one is a secondary line. The secondary line connects to the TVV(d2) right by the Thermotime sensor (right by the thermostat). The other one comes directly from the Throttle Body. While testing my vacuum advance, I see that if I apply vacuum to the secondary line, the distributor advances. If I apply vacuum to the primary line, well, nothing happens. I think that means my vacuum advance diaphram 'thingee' is bad, but I want to make sure first.

If someone with a 1980 280zx could check to see if your distributor has the two vacuum ports and check to see if both of them should advance the distributor, I would greatly appreciate it.

Thanks!

jA
 

·
Registered
Joined
·
107,695 Posts
Discussion Starter · #2 ·
> First, I appologize for my eailer post,
> which wasn't very clear. I tried to delete
> it, but it seems I forgot to specify a
> password.

> Here is my situation, and I hope someone can
> help. On my distributor, there are two
> vacuum lines that go into it. According to
> the Haynes manual, one is a primary line,
> and one is a secondary line. The secondary
> line connects to the TVV(d2) right by the
> Thermotime sensor (right by the thermostat).
> The other one comes directly from the
> Throttle Body. While testing my vacuum
> advance, I see that if I apply vacuum to the
> secondary line, the distributor advances. If
> I apply vacuum to the primary line, well,
> nothing happens. I think that means my
> vacuum advance diaphram 'thingee' is bad,
> but I want to make sure first.

> If someone with a 1980 280zx could check to
> see if your distributor has the two vacuum
> ports and check to see if both of them
> should advance the distributor, I would
> greatly appreciate it.

> Thanks!

> jA

your vacuum advance diaphragm is bad. the cars with manual trannies came with a dual diaphragm advance, the automatics only had a single. that's why you're having trouble with the diagrams. i'll email the diagrams i made. these should clear things up. if you have any questions let me know.

casper
 
1 - 2 of 2 Posts
Status
Not open for further replies.
Top