Well I may have found why it was hard to get a good idle with the 390 in my Thunderbird - and why my gas mileage was not as good as it could be.
Turns out the diaphragm in the vacuum advance had ruptured, I discovered that when I took it out of the motor prior to removing the intake manifold.
Anyway, I had a look on the Internet for a new one but only found complete distributiors for sale.
Is there a source of vacuum cans to suit my distributor?
Turns out the diaphragm in the vacuum advance had ruptured, I discovered that when I took it out of the motor prior to removing the intake manifold.
Anyway, I had a look on the Internet for a new one but only found complete distributiors for sale.
Is there a source of vacuum cans to suit my distributor?
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