V12 running on 8 not fun, but happy ending....

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michaelbalk330
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Joined: Fri Feb 06, 2015 8:28 am

V12 running on 8 not fun, but happy ending....

Post by michaelbalk330 » Sat Feb 24, 2018 3:39 pm

Took car in to Ken's Body Shop in Tucker GA (I can recommend him!) for some minor touch up of chips etc on nose. While there, there was a 330GTC getting a complete restoration competing for my time so car sat with him over holidays a few months, and when I picked her up a few weeks ago, she was running rough and seemed to be underpowered.
Got her home but then rain and life got in way so finally today decided to figure out what was wrong. Went thru the carbs , fuel pump, and they seemed fine, still synchronized, etc. Drove car again and clearly sounded funky at the exhaust, like missing, and underpowered, and my mind went all sorts of bad places like bad cylinders, engine rebuild, burnt valves, etc.
so Used my trusty Snap-on spark tester and found 4 wires without spark. But, no particular pattern ( #s 1,3,6, and 9)- so it crossed banks, and since my car has electronic ignition with a cam lobe sensor, the involved cylinders really didn't fit any pattern. All cylinders except those above were 6-7KV which is fine. I pulled the #9 spark plug and it was fouled. cleaned it and reinstalled and got good spark .. did the same to the right bank and car is perfect. a bunch of needless worrying! Hopefully just need to adjust carbs a bit, but its time for new plug wires, grommets, and valve adjustment, and now that I know car is fine, I will take care of those items.. Happy ending.
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Michael
1967 330GT #9693
1967 Ducati 350 Sebring #04783
1959 Moto Guzzi Galletto #GNR93

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tyang
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Re: V12 running on 8 not fun, but happy ending....

Post by tyang » Sun Feb 25, 2018 7:56 am

Hi Michael,

It's funny that you posted this, because I was just thinking yesterday that I still owe you a set of grommets!

Tom
'63 330 America #5053

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michaelbalk330
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Re: V12 running on 8 not fun, but happy ending....

Post by michaelbalk330 » Sun Feb 25, 2018 1:49 pm

LOL it was a subtle hint! many thanks! michael
Michael
1967 330GT #9693
1967 Ducati 350 Sebring #04783
1959 Moto Guzzi Galletto #GNR93

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