ONZEDGE Posted August 28, 2008 Share #1 Posted August 28, 2008 Hello. I drive a 71 daily driver and it is very reliable until yesterday. Driveing down the fwy at about 3400 rpm the engine stopped for a split second. The remainder of the drive was uneventful. This morning howebver it happened again 4 or 5 times during a 20 mile drive to the office.Coming home it became more frequent and it actually stalled while driving down my street in 1st gear. Following this stall was a loud backfire.When it happens it is like someone kills the ignition -- just for a second.It is freshly tuned and I have a new ignition switch. I run a mallory dual point with an MSD coil. All of the connections look good.Please help with this puzzler. Link to comment Share on other sites More sharing options...
Curtis240Z Posted August 28, 2008 Share #2 Posted August 28, 2008 Try replacing your condenser. My friend's 240Z setup with the Mallory always ate condensers. Link to comment Share on other sites More sharing options...
ONZEDGE Posted August 28, 2008 Author Share #3 Posted August 28, 2008 I always experienced condensors either working or not working -- never sometimes yes and sometimes no -- was I mistaken? Link to comment Share on other sites More sharing options...
Curtis240Z Posted August 29, 2008 Share #4 Posted August 29, 2008 Well my buddies Z when the condensers began to fail, would let the car run for awhile then when the car is fully warmed up (and on a trip of course) it would fail. So he got good at changing them at the roadside.... Link to comment Share on other sites More sharing options...
ONZEDGE Posted August 29, 2008 Author Share #5 Posted August 29, 2008 Thanks Curtis -- I will check it out tonight. Link to comment Share on other sites More sharing options...
ONZEDGE Posted August 30, 2008 Author Share #6 Posted August 30, 2008 Nope -- not the condensor -- Any other ideas out there? I am feeling stupid. Link to comment Share on other sites More sharing options...
Curtis240Z Posted August 30, 2008 Share #7 Posted August 30, 2008 The electrical system on a 240Z is very simple so if it isn't a connection problem, it has to be one or more of a few electrical items. Ignition coils can exhibit failure when they get hot then work again as they cool off. Link to comment Share on other sites More sharing options...
ONZEDGE Posted September 8, 2008 Author Share #8 Posted September 8, 2008 Replacing the condensor seems to have worked, actually. Thanks for the input. Link to comment Share on other sites More sharing options...
Zulaytr Posted September 8, 2008 Share #9 Posted September 8, 2008 ONZEDGEHere is another thing for you to check- I once had the brass connector fail on the wire that goes to the distributor. It cracked and broke inside the clear outer protector, maybe yellow now from age, so if you looked at it you would swear the wire was connected. It would arc back and forth and make intermittent contact. Since it controls the ignition circuit going to the points it was like you turned off the key. If that connector is okay then be certain to check them all. Good luck Link to comment Share on other sites More sharing options...
Yarb
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